diff --git a/CODEOWNERS b/CODEOWNERS
index 1a7dc4f227..ca3849eb0d 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -442,6 +442,7 @@ esphome/components/sun/* @OttoWinter
 esphome/components/sun_gtil2/* @Mat931
 esphome/components/switch/* @esphome/core
 esphome/components/switch/binary_sensor/* @ssieb
+esphome/components/sx126x/* @swoboda1337
 esphome/components/sx127x/* @swoboda1337
 esphome/components/syslog/* @clydebarrow
 esphome/components/t6615/* @tylermenezes
diff --git a/esphome/components/bluetooth_proxy/bluetooth_proxy.cpp b/esphome/components/bluetooth_proxy/bluetooth_proxy.cpp
index bf0adf1efd..98f11fac7a 100644
--- a/esphome/components/bluetooth_proxy/bluetooth_proxy.cpp
+++ b/esphome/components/bluetooth_proxy/bluetooth_proxy.cpp
@@ -52,7 +52,12 @@ bool BluetoothProxy::parse_device(const esp32_ble_tracker::ESPBTDevice &device)
   return true;
 }
 
-static constexpr size_t FLUSH_BATCH_SIZE = 8;
+// Batch size for BLE advertisements to maximize WiFi efficiency
+// Each advertisement is up to 80 bytes when packaged (including protocol overhead)
+// Most advertisements are 20-30 bytes, allowing even more to fit per packet
+// 16 advertisements × 80 bytes (worst case) = 1280 bytes out of ~1320 bytes usable payload
+// This achieves ~97% WiFi MTU utilization while staying under the limit
+static constexpr size_t FLUSH_BATCH_SIZE = 16;
 static std::vector<api::BluetoothLERawAdvertisement> &get_batch_buffer() {
   static std::vector<api::BluetoothLERawAdvertisement> batch_buffer;
   return batch_buffer;
diff --git a/esphome/components/esp32/helpers.cpp b/esphome/components/esp32/helpers.cpp
new file mode 100644
index 0000000000..310e7bd94a
--- /dev/null
+++ b/esphome/components/esp32/helpers.cpp
@@ -0,0 +1,69 @@
+#include "esphome/core/helpers.h"
+
+#ifdef USE_ESP32
+
+#include "esp_efuse.h"
+#include "esp_efuse_table.h"
+#include "esp_mac.h"
+
+#include <freertos/FreeRTOS.h>
+#include <freertos/portmacro.h>
+#include "esp_random.h"
+#include "esp_system.h"
+
+namespace esphome {
+
+uint32_t random_uint32() { return esp_random(); }
+bool random_bytes(uint8_t *data, size_t len) {
+  esp_fill_random(data, len);
+  return true;
+}
+
+Mutex::Mutex() { handle_ = xSemaphoreCreateMutex(); }
+Mutex::~Mutex() {}
+void Mutex::lock() { xSemaphoreTake(this->handle_, portMAX_DELAY); }
+bool Mutex::try_lock() { return xSemaphoreTake(this->handle_, 0) == pdTRUE; }
+void Mutex::unlock() { xSemaphoreGive(this->handle_); }
+
+// only affects the executing core
+// so should not be used as a mutex lock, only to get accurate timing
+IRAM_ATTR InterruptLock::InterruptLock() { portDISABLE_INTERRUPTS(); }
+IRAM_ATTR InterruptLock::~InterruptLock() { portENABLE_INTERRUPTS(); }
+
+void get_mac_address_raw(uint8_t *mac) {  // NOLINT(readability-non-const-parameter)
+#if defined(CONFIG_SOC_IEEE802154_SUPPORTED)
+  // When CONFIG_SOC_IEEE802154_SUPPORTED is defined, esp_efuse_mac_get_default
+  // returns the 802.15.4 EUI-64 address, so we read directly from eFuse instead.
+  if (has_custom_mac_address()) {
+    esp_efuse_read_field_blob(ESP_EFUSE_MAC_CUSTOM, mac, 48);
+  } else {
+    esp_efuse_read_field_blob(ESP_EFUSE_MAC_FACTORY, mac, 48);
+  }
+#else
+  if (has_custom_mac_address()) {
+    esp_efuse_mac_get_custom(mac);
+  } else {
+    esp_efuse_mac_get_default(mac);
+  }
+#endif
+}
+
+void set_mac_address(uint8_t *mac) { esp_base_mac_addr_set(mac); }
+
+bool has_custom_mac_address() {
+#if !defined(USE_ESP32_IGNORE_EFUSE_CUSTOM_MAC)
+  uint8_t mac[6];
+  // do not use 'esp_efuse_mac_get_custom(mac)' because it drops an error in the logs whenever it fails
+#ifndef USE_ESP32_VARIANT_ESP32
+  return (esp_efuse_read_field_blob(ESP_EFUSE_USER_DATA_MAC_CUSTOM, mac, 48) == ESP_OK) && mac_address_is_valid(mac);
+#else
+  return (esp_efuse_read_field_blob(ESP_EFUSE_MAC_CUSTOM, mac, 48) == ESP_OK) && mac_address_is_valid(mac);
+#endif
+#else
+  return false;
+#endif
+}
+
+}  // namespace esphome
+
+#endif  // USE_ESP32
diff --git a/esphome/components/esp32_ble/ble.h b/esphome/components/esp32_ble/ble.h
index 81582eb09a..2c5697df82 100644
--- a/esphome/components/esp32_ble/ble.h
+++ b/esphome/components/esp32_ble/ble.h
@@ -25,10 +25,15 @@ namespace esphome {
 namespace esp32_ble {
 
 // Maximum number of BLE scan results to buffer
+// Sized to handle bursts of advertisements while allowing for processing delays
+// With 16 advertisements per batch and some safety margin:
+// - Without PSRAM: 24 entries (1.5× batch size)
+// - With PSRAM: 36 entries (2.25× batch size)
+// The reduced structure size (~80 bytes vs ~400 bytes) allows for larger buffers
 #ifdef USE_PSRAM
-static constexpr uint8_t SCAN_RESULT_BUFFER_SIZE = 32;
+static constexpr uint8_t SCAN_RESULT_BUFFER_SIZE = 36;
 #else
-static constexpr uint8_t SCAN_RESULT_BUFFER_SIZE = 20;
+static constexpr uint8_t SCAN_RESULT_BUFFER_SIZE = 24;
 #endif
 
 // Maximum size of the BLE event queue - must be power of 2 for lock-free queue
diff --git a/esphome/components/esp8266/helpers.cpp b/esphome/components/esp8266/helpers.cpp
new file mode 100644
index 0000000000..993de710c6
--- /dev/null
+++ b/esphome/components/esp8266/helpers.cpp
@@ -0,0 +1,31 @@
+#include "esphome/core/helpers.h"
+
+#ifdef USE_ESP8266
+
+#include <osapi.h>
+#include <user_interface.h>
+// for xt_rsil()/xt_wsr_ps()
+#include <Arduino.h>
+
+namespace esphome {
+
+uint32_t random_uint32() { return os_random(); }
+bool random_bytes(uint8_t *data, size_t len) { return os_get_random(data, len) == 0; }
+
+// ESP8266 doesn't have mutexes, but that shouldn't be an issue as it's single-core and non-preemptive OS.
+Mutex::Mutex() {}
+Mutex::~Mutex() {}
+void Mutex::lock() {}
+bool Mutex::try_lock() { return true; }
+void Mutex::unlock() {}
+
+IRAM_ATTR InterruptLock::InterruptLock() { state_ = xt_rsil(15); }
+IRAM_ATTR InterruptLock::~InterruptLock() { xt_wsr_ps(state_); }
+
+void get_mac_address_raw(uint8_t *mac) {  // NOLINT(readability-non-const-parameter)
+  wifi_get_macaddr(STATION_IF, mac);
+}
+
+}  // namespace esphome
+
+#endif  // USE_ESP8266
diff --git a/esphome/components/host/helpers.cpp b/esphome/components/host/helpers.cpp
new file mode 100644
index 0000000000..fdad4f5cb6
--- /dev/null
+++ b/esphome/components/host/helpers.cpp
@@ -0,0 +1,57 @@
+#include "esphome/core/helpers.h"
+
+#ifdef USE_HOST
+
+#ifndef _WIN32
+#include <net/if.h>
+#include <netinet/in.h>
+#include <sys/ioctl.h>
+#endif
+#include <unistd.h>
+#include <limits>
+#include <random>
+
+#include "esphome/core/defines.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+
+static const char *const TAG = "helpers.host";
+
+uint32_t random_uint32() {
+  std::random_device dev;
+  std::mt19937 rng(dev());
+  std::uniform_int_distribution<uint32_t> dist(0, std::numeric_limits<uint32_t>::max());
+  return dist(rng);
+}
+
+bool random_bytes(uint8_t *data, size_t len) {
+  FILE *fp = fopen("/dev/urandom", "r");
+  if (fp == nullptr) {
+    ESP_LOGW(TAG, "Could not open /dev/urandom, errno=%d", errno);
+    exit(1);
+  }
+  size_t read = fread(data, 1, len, fp);
+  if (read != len) {
+    ESP_LOGW(TAG, "Not enough data from /dev/urandom");
+    exit(1);
+  }
+  fclose(fp);
+  return true;
+}
+
+// Host platform uses std::mutex for proper thread synchronization
+Mutex::Mutex() { handle_ = new std::mutex(); }
+Mutex::~Mutex() { delete static_cast<std::mutex *>(handle_); }
+void Mutex::lock() { static_cast<std::mutex *>(handle_)->lock(); }
+bool Mutex::try_lock() { return static_cast<std::mutex *>(handle_)->try_lock(); }
+void Mutex::unlock() { static_cast<std::mutex *>(handle_)->unlock(); }
+
+void get_mac_address_raw(uint8_t *mac) {  // NOLINT(readability-non-const-parameter)
+  static const uint8_t esphome_host_mac_address[6] = USE_ESPHOME_HOST_MAC_ADDRESS;
+  memcpy(mac, esphome_host_mac_address, sizeof(esphome_host_mac_address));
+}
+
+}  // namespace esphome
+
+#endif  // USE_HOST
diff --git a/esphome/components/inkplate6/display.py b/esphome/components/inkplate6/display.py
index a7d31c0131..063fc8b0aa 100644
--- a/esphome/components/inkplate6/display.py
+++ b/esphome/components/inkplate6/display.py
@@ -1,6 +1,7 @@
 from esphome import pins
 import esphome.codegen as cg
 from esphome.components import display, i2c
+from esphome.components.esp32 import CONF_CPU_FREQUENCY
 import esphome.config_validation as cv
 from esphome.const import (
     CONF_FULL_UPDATE_EVERY,
@@ -13,7 +14,9 @@ from esphome.const import (
     CONF_PAGES,
     CONF_TRANSFORM,
     CONF_WAKEUP_PIN,
+    PLATFORM_ESP32,
 )
+import esphome.final_validate as fv
 
 DEPENDENCIES = ["i2c", "esp32"]
 AUTO_LOAD = ["psram"]
@@ -120,6 +123,18 @@ CONFIG_SCHEMA = cv.All(
 )
 
 
+def _validate_cpu_frequency(config):
+    esp32_config = fv.full_config.get()[PLATFORM_ESP32]
+    if esp32_config[CONF_CPU_FREQUENCY] != "240MHZ":
+        raise cv.Invalid(
+            "Inkplate requires 240MHz CPU frequency (set in esp32 component)"
+        )
+    return config
+
+
+FINAL_VALIDATE_SCHEMA = _validate_cpu_frequency
+
+
 async def to_code(config):
     var = cg.new_Pvariable(config[CONF_ID])
 
diff --git a/esphome/components/ld2450/button/__init__.py b/esphome/components/ld2450/button/__init__.py
index 39671d3a3b..429aa59389 100644
--- a/esphome/components/ld2450/button/__init__.py
+++ b/esphome/components/ld2450/button/__init__.py
@@ -13,13 +13,13 @@ from esphome.const import (
 
 from .. import CONF_LD2450_ID, LD2450Component, ld2450_ns
 
-ResetButton = ld2450_ns.class_("ResetButton", button.Button)
+FactoryResetButton = ld2450_ns.class_("FactoryResetButton", button.Button)
 RestartButton = ld2450_ns.class_("RestartButton", button.Button)
 
 CONFIG_SCHEMA = {
     cv.GenerateID(CONF_LD2450_ID): cv.use_id(LD2450Component),
     cv.Optional(CONF_FACTORY_RESET): button.button_schema(
-        ResetButton,
+        FactoryResetButton,
         device_class=DEVICE_CLASS_RESTART,
         entity_category=ENTITY_CATEGORY_CONFIG,
         icon=ICON_RESTART_ALERT,
@@ -38,7 +38,7 @@ async def to_code(config):
     if factory_reset_config := config.get(CONF_FACTORY_RESET):
         b = await button.new_button(factory_reset_config)
         await cg.register_parented(b, config[CONF_LD2450_ID])
-        cg.add(ld2450_component.set_reset_button(b))
+        cg.add(ld2450_component.set_factory_reset_button(b))
     if restart_config := config.get(CONF_RESTART):
         b = await button.new_button(restart_config)
         await cg.register_parented(b, config[CONF_LD2450_ID])
diff --git a/esphome/components/ld2450/button/factory_reset_button.cpp b/esphome/components/ld2450/button/factory_reset_button.cpp
new file mode 100644
index 0000000000..bcac7ada2f
--- /dev/null
+++ b/esphome/components/ld2450/button/factory_reset_button.cpp
@@ -0,0 +1,9 @@
+#include "factory_reset_button.h"
+
+namespace esphome {
+namespace ld2450 {
+
+void FactoryResetButton::press_action() { this->parent_->factory_reset(); }
+
+}  // namespace ld2450
+}  // namespace esphome
diff --git a/esphome/components/ld2450/button/reset_button.h b/esphome/components/ld2450/button/factory_reset_button.h
similarity index 65%
rename from esphome/components/ld2450/button/reset_button.h
rename to esphome/components/ld2450/button/factory_reset_button.h
index 73804fa6d6..8e80347119 100644
--- a/esphome/components/ld2450/button/reset_button.h
+++ b/esphome/components/ld2450/button/factory_reset_button.h
@@ -6,9 +6,9 @@
 namespace esphome {
 namespace ld2450 {
 
-class ResetButton : public button::Button, public Parented<LD2450Component> {
+class FactoryResetButton : public button::Button, public Parented<LD2450Component> {
  public:
-  ResetButton() = default;
+  FactoryResetButton() = default;
 
  protected:
   void press_action() override;
diff --git a/esphome/components/ld2450/button/reset_button.cpp b/esphome/components/ld2450/button/reset_button.cpp
deleted file mode 100644
index e96ec99cc5..0000000000
--- a/esphome/components/ld2450/button/reset_button.cpp
+++ /dev/null
@@ -1,9 +0,0 @@
-#include "reset_button.h"
-
-namespace esphome {
-namespace ld2450 {
-
-void ResetButton::press_action() { this->parent_->factory_reset(); }
-
-}  // namespace ld2450
-}  // namespace esphome
diff --git a/esphome/components/ld2450/ld2450.cpp b/esphome/components/ld2450/ld2450.cpp
index 4b87f1cea4..8f3b3a3f21 100644
--- a/esphome/components/ld2450/ld2450.cpp
+++ b/esphome/components/ld2450/ld2450.cpp
@@ -18,11 +18,10 @@ namespace esphome {
 namespace ld2450 {
 
 static const char *const TAG = "ld2450";
-static const char *const NO_MAC = "08:05:04:03:02:01";
 static const char *const UNKNOWN_MAC = "unknown";
 static const char *const VERSION_FMT = "%u.%02X.%02X%02X%02X%02X";
 
-enum BaudRateStructure : uint8_t {
+enum BaudRate : uint8_t {
   BAUD_RATE_9600 = 1,
   BAUD_RATE_19200 = 2,
   BAUD_RATE_38400 = 3,
@@ -33,14 +32,13 @@ enum BaudRateStructure : uint8_t {
   BAUD_RATE_460800 = 8
 };
 
-// Zone type struct
-enum ZoneTypeStructure : uint8_t {
+enum ZoneType : uint8_t {
   ZONE_DISABLED = 0,
   ZONE_DETECTION = 1,
   ZONE_FILTER = 2,
 };
 
-enum PeriodicDataStructure : uint8_t {
+enum PeriodicData : uint8_t {
   TARGET_X = 4,
   TARGET_Y = 6,
   TARGET_SPEED = 8,
@@ -48,12 +46,12 @@ enum PeriodicDataStructure : uint8_t {
 };
 
 enum PeriodicDataValue : uint8_t {
-  HEAD = 0xAA,
-  END = 0x55,
+  HEADER = 0xAA,
+  FOOTER = 0x55,
   CHECK = 0x00,
 };
 
-enum AckDataStructure : uint8_t {
+enum AckData : uint8_t {
   COMMAND = 6,
   COMMAND_STATUS = 7,
 };
@@ -61,11 +59,11 @@ enum AckDataStructure : uint8_t {
 // Memory-efficient lookup tables
 struct StringToUint8 {
   const char *str;
-  uint8_t value;
+  const uint8_t value;
 };
 
 struct Uint8ToString {
-  uint8_t value;
+  const uint8_t value;
   const char *str;
 };
 
@@ -75,6 +73,13 @@ constexpr StringToUint8 BAUD_RATES_BY_STR[] = {
     {"256000", BAUD_RATE_256000}, {"460800", BAUD_RATE_460800},
 };
 
+constexpr Uint8ToString DIRECTION_BY_UINT[] = {
+    {DIRECTION_APPROACHING, "Approaching"},
+    {DIRECTION_MOVING_AWAY, "Moving away"},
+    {DIRECTION_STATIONARY, "Stationary"},
+    {DIRECTION_NA, "NA"},
+};
+
 constexpr Uint8ToString ZONE_TYPE_BY_UINT[] = {
     {ZONE_DISABLED, "Disabled"},
     {ZONE_DETECTION, "Detection"},
@@ -104,28 +109,35 @@ template<size_t N> const char *find_str(const Uint8ToString (&arr)[N], uint8_t v
   return "";  // Not found
 }
 
-// LD2450 serial command header & footer
-static const uint8_t CMD_FRAME_HEADER[4] = {0xFD, 0xFC, 0xFB, 0xFA};
-static const uint8_t CMD_FRAME_END[4] = {0x04, 0x03, 0x02, 0x01};
 // LD2450 UART Serial Commands
-static const uint8_t CMD_ENABLE_CONF = 0xFF;
-static const uint8_t CMD_DISABLE_CONF = 0xFE;
-static const uint8_t CMD_VERSION = 0xA0;
-static const uint8_t CMD_MAC = 0xA5;
-static const uint8_t CMD_RESET = 0xA2;
-static const uint8_t CMD_RESTART = 0xA3;
-static const uint8_t CMD_BLUETOOTH = 0xA4;
-static const uint8_t CMD_SINGLE_TARGET_MODE = 0x80;
-static const uint8_t CMD_MULTI_TARGET_MODE = 0x90;
-static const uint8_t CMD_QUERY_TARGET_MODE = 0x91;
-static const uint8_t CMD_SET_BAUD_RATE = 0xA1;
-static const uint8_t CMD_QUERY_ZONE = 0xC1;
-static const uint8_t CMD_SET_ZONE = 0xC2;
+static constexpr uint8_t CMD_ENABLE_CONF = 0xFF;
+static constexpr uint8_t CMD_DISABLE_CONF = 0xFE;
+static constexpr uint8_t CMD_QUERY_VERSION = 0xA0;
+static constexpr uint8_t CMD_QUERY_MAC_ADDRESS = 0xA5;
+static constexpr uint8_t CMD_RESET = 0xA2;
+static constexpr uint8_t CMD_RESTART = 0xA3;
+static constexpr uint8_t CMD_BLUETOOTH = 0xA4;
+static constexpr uint8_t CMD_SINGLE_TARGET_MODE = 0x80;
+static constexpr uint8_t CMD_MULTI_TARGET_MODE = 0x90;
+static constexpr uint8_t CMD_QUERY_TARGET_MODE = 0x91;
+static constexpr uint8_t CMD_SET_BAUD_RATE = 0xA1;
+static constexpr uint8_t CMD_QUERY_ZONE = 0xC1;
+static constexpr uint8_t CMD_SET_ZONE = 0xC2;
+// Header & Footer size
+static constexpr uint8_t HEADER_FOOTER_SIZE = 4;
+// Command Header & Footer
+static constexpr uint8_t CMD_FRAME_HEADER[HEADER_FOOTER_SIZE] = {0xFD, 0xFC, 0xFB, 0xFA};
+static constexpr uint8_t CMD_FRAME_FOOTER[HEADER_FOOTER_SIZE] = {0x04, 0x03, 0x02, 0x01};
+// Data Header & Footer
+static constexpr uint8_t DATA_FRAME_HEADER[HEADER_FOOTER_SIZE] = {0xAA, 0xFF, 0x03, 0x00};
+static constexpr uint8_t DATA_FRAME_FOOTER[2] = {0x55, 0xCC};
+// MAC address the module uses when Bluetooth is disabled
+static constexpr uint8_t NO_MAC[] = {0x08, 0x05, 0x04, 0x03, 0x02, 0x01};
 
 static inline uint16_t convert_seconds_to_ms(uint16_t value) { return value * 1000; };
 
 static inline void convert_int_values_to_hex(const int *values, uint8_t *bytes) {
-  for (int i = 0; i < 4; i++) {
+  for (uint8_t i = 0; i < 4; i++) {
     uint16_t val = values[i] & 0xFFFF;
     bytes[i * 2] = val & 0xFF;             // Store low byte first (little-endian)
     bytes[i * 2 + 1] = (val >> 8) & 0xFF;  // Store high byte second
@@ -166,18 +178,13 @@ static inline float calculate_angle(float base, float hypotenuse) {
   return angle_degrees;
 }
 
-static inline std::string get_direction(int16_t speed) {
-  static const char *const APPROACHING = "Approaching";
-  static const char *const MOVING_AWAY = "Moving away";
-  static const char *const STATIONARY = "Stationary";
-
-  if (speed > 0) {
-    return MOVING_AWAY;
+static bool validate_header_footer(const uint8_t *header_footer, const uint8_t *buffer) {
+  for (uint8_t i = 0; i < HEADER_FOOTER_SIZE; i++) {
+    if (header_footer[i] != buffer[i]) {
+      return false;  // Mismatch in header/footer
+    }
   }
-  if (speed < 0) {
-    return APPROACHING;
-  }
-  return STATIONARY;
+  return true;  // Valid header/footer
 }
 
 void LD2450Component::setup() {
@@ -192,84 +199,93 @@ void LD2450Component::setup() {
 }
 
 void LD2450Component::dump_config() {
-  ESP_LOGCONFIG(TAG, "LD2450:");
+  std::string mac_str =
+      mac_address_is_valid(this->mac_address_) ? format_mac_address_pretty(this->mac_address_) : UNKNOWN_MAC;
+  std::string version = str_sprintf(VERSION_FMT, this->version_[1], this->version_[0], this->version_[5],
+                                    this->version_[4], this->version_[3], this->version_[2]);
+  ESP_LOGCONFIG(TAG,
+                "LD2450:\n"
+                "  Firmware version: %s\n"
+                "  MAC address: %s\n"
+                "  Throttle: %u ms",
+                version.c_str(), mac_str.c_str(), this->throttle_);
 #ifdef USE_BINARY_SENSOR
-  LOG_BINARY_SENSOR("  ", "TargetBinarySensor", this->target_binary_sensor_);
-  LOG_BINARY_SENSOR("  ", "MovingTargetBinarySensor", this->moving_target_binary_sensor_);
-  LOG_BINARY_SENSOR("  ", "StillTargetBinarySensor", this->still_target_binary_sensor_);
-#endif
-#ifdef USE_SWITCH
-  LOG_SWITCH("  ", "BluetoothSwitch", this->bluetooth_switch_);
-  LOG_SWITCH("  ", "MultiTargetSwitch", this->multi_target_switch_);
-#endif
-#ifdef USE_BUTTON
-  LOG_BUTTON("  ", "ResetButton", this->reset_button_);
-  LOG_BUTTON("  ", "RestartButton", this->restart_button_);
+  ESP_LOGCONFIG(TAG, "Binary Sensors:");
+  LOG_BINARY_SENSOR("  ", "MovingTarget", this->moving_target_binary_sensor_);
+  LOG_BINARY_SENSOR("  ", "StillTarget", this->still_target_binary_sensor_);
+  LOG_BINARY_SENSOR("  ", "Target", this->target_binary_sensor_);
 #endif
 #ifdef USE_SENSOR
-  LOG_SENSOR("  ", "TargetCountSensor", this->target_count_sensor_);
-  LOG_SENSOR("  ", "StillTargetCountSensor", this->still_target_count_sensor_);
-  LOG_SENSOR("  ", "MovingTargetCountSensor", this->moving_target_count_sensor_);
+  ESP_LOGCONFIG(TAG, "Sensors:");
+  LOG_SENSOR("  ", "MovingTargetCount", this->moving_target_count_sensor_);
+  LOG_SENSOR("  ", "StillTargetCount", this->still_target_count_sensor_);
+  LOG_SENSOR("  ", "TargetCount", this->target_count_sensor_);
   for (sensor::Sensor *s : this->move_x_sensors_) {
-    LOG_SENSOR("  ", "NthTargetXSensor", s);
+    LOG_SENSOR("  ", "TargetX", s);
   }
   for (sensor::Sensor *s : this->move_y_sensors_) {
-    LOG_SENSOR("  ", "NthTargetYSensor", s);
-  }
-  for (sensor::Sensor *s : this->move_speed_sensors_) {
-    LOG_SENSOR("  ", "NthTargetSpeedSensor", s);
+    LOG_SENSOR("  ", "TargetY", s);
   }
   for (sensor::Sensor *s : this->move_angle_sensors_) {
-    LOG_SENSOR("  ", "NthTargetAngleSensor", s);
+    LOG_SENSOR("  ", "TargetAngle", s);
   }
   for (sensor::Sensor *s : this->move_distance_sensors_) {
-    LOG_SENSOR("  ", "NthTargetDistanceSensor", s);
+    LOG_SENSOR("  ", "TargetDistance", s);
   }
   for (sensor::Sensor *s : this->move_resolution_sensors_) {
-    LOG_SENSOR("  ", "NthTargetResolutionSensor", s);
+    LOG_SENSOR("  ", "TargetResolution", s);
+  }
+  for (sensor::Sensor *s : this->move_speed_sensors_) {
+    LOG_SENSOR("  ", "TargetSpeed", s);
   }
   for (sensor::Sensor *s : this->zone_target_count_sensors_) {
-    LOG_SENSOR("  ", "NthZoneTargetCountSensor", s);
-  }
-  for (sensor::Sensor *s : this->zone_still_target_count_sensors_) {
-    LOG_SENSOR("  ", "NthZoneStillTargetCountSensor", s);
+    LOG_SENSOR("  ", "ZoneTargetCount", s);
   }
   for (sensor::Sensor *s : this->zone_moving_target_count_sensors_) {
-    LOG_SENSOR("  ", "NthZoneMovingTargetCountSensor", s);
+    LOG_SENSOR("  ", "ZoneMovingTargetCount", s);
+  }
+  for (sensor::Sensor *s : this->zone_still_target_count_sensors_) {
+    LOG_SENSOR("  ", "ZoneStillTargetCount", s);
   }
 #endif
 #ifdef USE_TEXT_SENSOR
-  LOG_TEXT_SENSOR("  ", "VersionTextSensor", this->version_text_sensor_);
-  LOG_TEXT_SENSOR("  ", "MacTextSensor", this->mac_text_sensor_);
+  ESP_LOGCONFIG(TAG, "Text Sensors:");
+  LOG_TEXT_SENSOR("  ", "Version", this->version_text_sensor_);
+  LOG_TEXT_SENSOR("  ", "Mac", this->mac_text_sensor_);
   for (text_sensor::TextSensor *s : this->direction_text_sensors_) {
-    LOG_TEXT_SENSOR("  ", "NthDirectionTextSensor", s);
+    LOG_TEXT_SENSOR("  ", "Direction", s);
   }
 #endif
 #ifdef USE_NUMBER
+  ESP_LOGCONFIG(TAG, "Numbers:");
+  LOG_NUMBER("  ", "PresenceTimeout", this->presence_timeout_number_);
   for (auto n : this->zone_numbers_) {
-    LOG_NUMBER("  ", "ZoneX1Number", n.x1);
-    LOG_NUMBER("  ", "ZoneY1Number", n.y1);
-    LOG_NUMBER("  ", "ZoneX2Number", n.x2);
-    LOG_NUMBER("  ", "ZoneY2Number", n.y2);
+    LOG_NUMBER("  ", "ZoneX1", n.x1);
+    LOG_NUMBER("  ", "ZoneY1", n.y1);
+    LOG_NUMBER("  ", "ZoneX2", n.x2);
+    LOG_NUMBER("  ", "ZoneY2", n.y2);
   }
 #endif
 #ifdef USE_SELECT
-  LOG_SELECT("  ", "BaudRateSelect", this->baud_rate_select_);
-  LOG_SELECT("  ", "ZoneTypeSelect", this->zone_type_select_);
+  ESP_LOGCONFIG(TAG, "Selects:");
+  LOG_SELECT("  ", "BaudRate", this->baud_rate_select_);
+  LOG_SELECT("  ", "ZoneType", this->zone_type_select_);
 #endif
-#ifdef USE_NUMBER
-  LOG_NUMBER("  ", "PresenceTimeoutNumber", this->presence_timeout_number_);
+#ifdef USE_SWITCH
+  ESP_LOGCONFIG(TAG, "Switches:");
+  LOG_SWITCH("  ", "Bluetooth", this->bluetooth_switch_);
+  LOG_SWITCH("  ", "MultiTarget", this->multi_target_switch_);
+#endif
+#ifdef USE_BUTTON
+  ESP_LOGCONFIG(TAG, "Buttons:");
+  LOG_BUTTON("  ", "FactoryReset", this->factory_reset_button_);
+  LOG_BUTTON("  ", "Restart", this->restart_button_);
 #endif
-  ESP_LOGCONFIG(TAG,
-                "  Throttle: %ums\n"
-                "  MAC Address: %s\n"
-                "  Firmware version: %s",
-                this->throttle_, this->mac_ == NO_MAC ? UNKNOWN_MAC : this->mac_.c_str(), this->version_.c_str());
 }
 
 void LD2450Component::loop() {
   while (this->available()) {
-    this->readline_(read(), this->buffer_data_, MAX_LINE_LENGTH);
+    this->readline_(this->read());
   }
 }
 
@@ -304,7 +320,7 @@ void LD2450Component::set_radar_zone(int32_t zone_type, int32_t zone1_x1, int32_
   this->zone_type_ = zone_type;
   int zone_parameters[12] = {zone1_x1, zone1_y1, zone1_x2, zone1_y2, zone2_x1, zone2_y1,
                              zone2_x2, zone2_y2, zone3_x1, zone3_y1, zone3_x2, zone3_y2};
-  for (int i = 0; i < MAX_ZONES; i++) {
+  for (uint8_t i = 0; i < MAX_ZONES; i++) {
     this->zone_config_[i].x1 = zone_parameters[i * 4];
     this->zone_config_[i].y1 = zone_parameters[i * 4 + 1];
     this->zone_config_[i].x2 = zone_parameters[i * 4 + 2];
@@ -318,15 +334,15 @@ void LD2450Component::send_set_zone_command_() {
   uint8_t cmd_value[26] = {};
   uint8_t zone_type_bytes[2] = {static_cast<uint8_t>(this->zone_type_), 0x00};
   uint8_t area_config[24] = {};
-  for (int i = 0; i < MAX_ZONES; i++) {
+  for (uint8_t i = 0; i < MAX_ZONES; i++) {
     int values[4] = {this->zone_config_[i].x1, this->zone_config_[i].y1, this->zone_config_[i].x2,
                      this->zone_config_[i].y2};
     ld2450::convert_int_values_to_hex(values, area_config + (i * 8));
   }
-  std::memcpy(cmd_value, zone_type_bytes, 2);
-  std::memcpy(cmd_value + 2, area_config, 24);
+  std::memcpy(cmd_value, zone_type_bytes, sizeof(zone_type_bytes));
+  std::memcpy(cmd_value + 2, area_config, sizeof(area_config));
   this->set_config_mode_(true);
-  this->send_command_(CMD_SET_ZONE, cmd_value, 26);
+  this->send_command_(CMD_SET_ZONE, cmd_value, sizeof(cmd_value));
   this->set_config_mode_(false);
 }
 
@@ -342,14 +358,14 @@ bool LD2450Component::get_timeout_status_(uint32_t check_millis) {
 }
 
 // Extract, store and publish zone details LD2450 buffer
-void LD2450Component::process_zone_(uint8_t *buffer) {
+void LD2450Component::process_zone_() {
   uint8_t index, start;
   for (index = 0; index < MAX_ZONES; index++) {
     start = 12 + index * 8;
-    this->zone_config_[index].x1 = ld2450::hex_to_signed_int(buffer, start);
-    this->zone_config_[index].y1 = ld2450::hex_to_signed_int(buffer, start + 2);
-    this->zone_config_[index].x2 = ld2450::hex_to_signed_int(buffer, start + 4);
-    this->zone_config_[index].y2 = ld2450::hex_to_signed_int(buffer, start + 6);
+    this->zone_config_[index].x1 = ld2450::hex_to_signed_int(this->buffer_data_, start);
+    this->zone_config_[index].y1 = ld2450::hex_to_signed_int(this->buffer_data_, start + 2);
+    this->zone_config_[index].x2 = ld2450::hex_to_signed_int(this->buffer_data_, start + 4);
+    this->zone_config_[index].y2 = ld2450::hex_to_signed_int(this->buffer_data_, start + 6);
 #ifdef USE_NUMBER
     // only one null check as all coordinates are required for a single zone
     if (this->zone_numbers_[index].x1 != nullptr) {
@@ -395,27 +411,25 @@ void LD2450Component::restart_and_read_all_info() {
 
 // Send command with values to LD2450
 void LD2450Component::send_command_(uint8_t command, const uint8_t *command_value, uint8_t command_value_len) {
-  ESP_LOGV(TAG, "Sending command %02X", command);
-  // frame header
-  this->write_array(CMD_FRAME_HEADER, 4);
+  ESP_LOGV(TAG, "Sending COMMAND %02X", command);
+  // frame header bytes
+  this->write_array(CMD_FRAME_HEADER, sizeof(CMD_FRAME_HEADER));
   // length bytes
-  int len = 2;
+  uint8_t len = 2;
   if (command_value != nullptr) {
     len += command_value_len;
   }
-  this->write_byte(lowbyte(len));
-  this->write_byte(highbyte(len));
-  // command
-  this->write_byte(lowbyte(command));
-  this->write_byte(highbyte(command));
+  uint8_t len_cmd[] = {lowbyte(len), highbyte(len), command, 0x00};
+  this->write_array(len_cmd, sizeof(len_cmd));
+
   // command value bytes
   if (command_value != nullptr) {
-    for (int i = 0; i < command_value_len; i++) {
+    for (uint8_t i = 0; i < command_value_len; i++) {
       this->write_byte(command_value[i]);
     }
   }
-  // footer
-  this->write_array(CMD_FRAME_END, 4);
+  // frame footer bytes
+  this->write_array(CMD_FRAME_FOOTER, sizeof(CMD_FRAME_FOOTER));
   // FIXME to remove
   delay(50);  // NOLINT
 }
@@ -423,26 +437,23 @@ void LD2450Component::send_command_(uint8_t command, const uint8_t *command_valu
 // LD2450 Radar data message:
 //  [AA FF 03 00] [0E 03 B1 86 10 00 40 01] [00 00 00 00 00 00 00 00] [00 00 00 00 00 00 00 00] [55 CC]
 //   Header       Target 1                  Target 2                  Target 3                  End
-void LD2450Component::handle_periodic_data_(uint8_t *buffer, uint8_t len) {
+void LD2450Component::handle_periodic_data_() {
   // Early throttle check - moved before any processing to save CPU cycles
   if (App.get_loop_component_start_time() - this->last_periodic_millis_ < this->throttle_) {
-    ESP_LOGV(TAG, "Throttling: %d", this->throttle_);
     return;
   }
 
-  if (len < 29) {  // header (4 bytes) + 8 x 3 target data + footer (2 bytes)
-    ESP_LOGE(TAG, "Invalid message length");
+  if (this->buffer_pos_ < 29) {  // header (4 bytes) + 8 x 3 target data + footer (2 bytes)
+    ESP_LOGE(TAG, "Invalid length");
     return;
   }
-  if (buffer[0] != 0xAA || buffer[1] != 0xFF || buffer[2] != 0x03 || buffer[3] != 0x00) {  // header
-    ESP_LOGE(TAG, "Invalid message header");
+  if (!ld2450::validate_header_footer(DATA_FRAME_HEADER, this->buffer_data_) ||
+      this->buffer_data_[this->buffer_pos_ - 2] != DATA_FRAME_FOOTER[0] ||
+      this->buffer_data_[this->buffer_pos_ - 1] != DATA_FRAME_FOOTER[1]) {
+    ESP_LOGE(TAG, "Invalid header/footer");
     return;
   }
-  if (buffer[len - 2] != 0x55 || buffer[len - 1] != 0xCC) {  // footer
-    ESP_LOGE(TAG, "Invalid message footer");
-    return;
-  }
-
+  // Save the timestamp after validating the frame so, if invalid, we'll take the next frame immediately
   this->last_periodic_millis_ = App.get_loop_component_start_time();
 
   int16_t target_count = 0;
@@ -450,13 +461,13 @@ void LD2450Component::handle_periodic_data_(uint8_t *buffer, uint8_t len) {
   int16_t moving_target_count = 0;
   int16_t start = 0;
   int16_t val = 0;
-  uint8_t index = 0;
   int16_t tx = 0;
   int16_t ty = 0;
   int16_t td = 0;
   int16_t ts = 0;
   int16_t angle = 0;
-  std::string direction{};
+  uint8_t index = 0;
+  Direction direction{DIRECTION_UNDEFINED};
   bool is_moving = false;
 
 #if defined(USE_BINARY_SENSOR) || defined(USE_SENSOR) || defined(USE_TEXT_SENSOR)
@@ -468,7 +479,7 @@ void LD2450Component::handle_periodic_data_(uint8_t *buffer, uint8_t len) {
     is_moving = false;
     sensor::Sensor *sx = this->move_x_sensors_[index];
     if (sx != nullptr) {
-      val = ld2450::decode_coordinate(buffer[start], buffer[start + 1]);
+      val = ld2450::decode_coordinate(this->buffer_data_[start], this->buffer_data_[start + 1]);
       tx = val;
       if (this->cached_target_data_[index].x != val) {
         sx->publish_state(val);
@@ -479,7 +490,7 @@ void LD2450Component::handle_periodic_data_(uint8_t *buffer, uint8_t len) {
     start = TARGET_Y + index * 8;
     sensor::Sensor *sy = this->move_y_sensors_[index];
     if (sy != nullptr) {
-      val = ld2450::decode_coordinate(buffer[start], buffer[start + 1]);
+      val = ld2450::decode_coordinate(this->buffer_data_[start], this->buffer_data_[start + 1]);
       ty = val;
       if (this->cached_target_data_[index].y != val) {
         sy->publish_state(val);
@@ -490,7 +501,7 @@ void LD2450Component::handle_periodic_data_(uint8_t *buffer, uint8_t len) {
     start = TARGET_RESOLUTION + index * 8;
     sensor::Sensor *sr = this->move_resolution_sensors_[index];
     if (sr != nullptr) {
-      val = (buffer[start + 1] << 8) | buffer[start];
+      val = (this->buffer_data_[start + 1] << 8) | this->buffer_data_[start];
       if (this->cached_target_data_[index].resolution != val) {
         sr->publish_state(val);
         this->cached_target_data_[index].resolution = val;
@@ -499,7 +510,7 @@ void LD2450Component::handle_periodic_data_(uint8_t *buffer, uint8_t len) {
 #endif
     // SPEED
     start = TARGET_SPEED + index * 8;
-    val = ld2450::decode_speed(buffer[start], buffer[start + 1]);
+    val = ld2450::decode_speed(this->buffer_data_[start], this->buffer_data_[start + 1]);
     ts = val;
     if (val) {
       is_moving = true;
@@ -532,7 +543,7 @@ void LD2450Component::handle_periodic_data_(uint8_t *buffer, uint8_t len) {
       }
     }
     // ANGLE
-    angle = calculate_angle(static_cast<float>(ty), static_cast<float>(td));
+    angle = ld2450::calculate_angle(static_cast<float>(ty), static_cast<float>(td));
     if (tx > 0) {
       angle = angle * -1;
     }
@@ -547,14 +558,19 @@ void LD2450Component::handle_periodic_data_(uint8_t *buffer, uint8_t len) {
 #endif
 #ifdef USE_TEXT_SENSOR
     // DIRECTION
-    direction = get_direction(ts);
     if (td == 0) {
-      direction = "NA";
+      direction = DIRECTION_NA;
+    } else if (ts > 0) {
+      direction = DIRECTION_MOVING_AWAY;
+    } else if (ts < 0) {
+      direction = DIRECTION_APPROACHING;
+    } else {
+      direction = DIRECTION_STATIONARY;
     }
     text_sensor::TextSensor *tsd = this->direction_text_sensors_[index];
     if (tsd != nullptr) {
       if (this->cached_target_data_[index].direction != direction) {
-        tsd->publish_state(direction);
+        tsd->publish_state(find_str(ld2450::DIRECTION_BY_UINT, direction));
         this->cached_target_data_[index].direction = direction;
       }
     }
@@ -678,117 +694,139 @@ void LD2450Component::handle_periodic_data_(uint8_t *buffer, uint8_t len) {
 #endif
 }
 
-bool LD2450Component::handle_ack_data_(uint8_t *buffer, uint8_t len) {
-  ESP_LOGV(TAG, "Handling ack data for command %02X", buffer[COMMAND]);
-  if (len < 10) {
-    ESP_LOGE(TAG, "Invalid ack length");
+bool LD2450Component::handle_ack_data_() {
+  ESP_LOGV(TAG, "Handling ACK DATA for COMMAND %02X", this->buffer_data_[COMMAND]);
+  if (this->buffer_pos_ < 10) {
+    ESP_LOGE(TAG, "Invalid length");
     return true;
   }
-  if (buffer[0] != 0xFD || buffer[1] != 0xFC || buffer[2] != 0xFB || buffer[3] != 0xFA) {  // frame header
-    ESP_LOGE(TAG, "Invalid ack header (command %02X)", buffer[COMMAND]);
+  if (!ld2450::validate_header_footer(CMD_FRAME_HEADER, this->buffer_data_)) {
+    ESP_LOGW(TAG, "Invalid header: %s", format_hex_pretty(this->buffer_data_, HEADER_FOOTER_SIZE).c_str());
     return true;
   }
-  if (buffer[COMMAND_STATUS] != 0x01) {
-    ESP_LOGE(TAG, "Invalid ack status");
+  if (this->buffer_data_[COMMAND_STATUS] != 0x01) {
+    ESP_LOGE(TAG, "Invalid status");
     return true;
   }
-  if (buffer[8] || buffer[9]) {
-    ESP_LOGE(TAG, "Last buffer was %u, %u", buffer[8], buffer[9]);
+  if (this->buffer_data_[8] || this->buffer_data_[9]) {
+    ESP_LOGW(TAG, "Invalid command: %02X, %02X", this->buffer_data_[8], this->buffer_data_[9]);
     return true;
   }
 
-  switch (buffer[COMMAND]) {
-    case lowbyte(CMD_ENABLE_CONF):
-      ESP_LOGV(TAG, "Enable conf command");
+  switch (this->buffer_data_[COMMAND]) {
+    case CMD_ENABLE_CONF:
+      ESP_LOGV(TAG, "Enable conf");
       break;
-    case lowbyte(CMD_DISABLE_CONF):
-      ESP_LOGV(TAG, "Disable conf command");
+
+    case CMD_DISABLE_CONF:
+      ESP_LOGV(TAG, "Disabled conf");
       break;
-    case lowbyte(CMD_SET_BAUD_RATE):
-      ESP_LOGV(TAG, "Baud rate change command");
+
+    case CMD_SET_BAUD_RATE:
+      ESP_LOGV(TAG, "Baud rate change");
 #ifdef USE_SELECT
       if (this->baud_rate_select_ != nullptr) {
-        ESP_LOGV(TAG, "Change baud rate to %s", this->baud_rate_select_->state.c_str());
+        ESP_LOGE(TAG, "Change baud rate to %s and reinstall", this->baud_rate_select_->state.c_str());
       }
 #endif
       break;
-    case lowbyte(CMD_VERSION):
-      this->version_ = str_sprintf(VERSION_FMT, buffer[13], buffer[12], buffer[17], buffer[16], buffer[15], buffer[14]);
-      ESP_LOGV(TAG, "Firmware version: %s", this->version_.c_str());
+
+    case CMD_QUERY_VERSION: {
+      std::memcpy(this->version_, &this->buffer_data_[12], sizeof(this->version_));
+      std::string version = str_sprintf(VERSION_FMT, this->version_[1], this->version_[0], this->version_[5],
+                                        this->version_[4], this->version_[3], this->version_[2]);
+      ESP_LOGV(TAG, "Firmware version: %s", version.c_str());
 #ifdef USE_TEXT_SENSOR
       if (this->version_text_sensor_ != nullptr) {
-        this->version_text_sensor_->publish_state(this->version_);
+        this->version_text_sensor_->publish_state(version);
       }
 #endif
       break;
-    case lowbyte(CMD_MAC):
-      if (len < 20) {
+    }
+
+    case CMD_QUERY_MAC_ADDRESS: {
+      if (this->buffer_pos_ < 20) {
         return false;
       }
-      this->mac_ = format_mac_address_pretty(&buffer[10]);
-      ESP_LOGV(TAG, "MAC address: %s", this->mac_.c_str());
+
+      this->bluetooth_on_ = std::memcmp(&this->buffer_data_[10], NO_MAC, sizeof(NO_MAC)) != 0;
+      if (this->bluetooth_on_) {
+        std::memcpy(this->mac_address_, &this->buffer_data_[10], sizeof(this->mac_address_));
+      }
+
+      std::string mac_str =
+          mac_address_is_valid(this->mac_address_) ? format_mac_address_pretty(this->mac_address_) : UNKNOWN_MAC;
+      ESP_LOGV(TAG, "MAC address: %s", mac_str.c_str());
 #ifdef USE_TEXT_SENSOR
       if (this->mac_text_sensor_ != nullptr) {
-        this->mac_text_sensor_->publish_state(this->mac_ == NO_MAC ? UNKNOWN_MAC : this->mac_);
+        this->mac_text_sensor_->publish_state(mac_str);
       }
 #endif
 #ifdef USE_SWITCH
       if (this->bluetooth_switch_ != nullptr) {
-        this->bluetooth_switch_->publish_state(this->mac_ != NO_MAC);
+        this->bluetooth_switch_->publish_state(this->bluetooth_on_);
       }
 #endif
       break;
-    case lowbyte(CMD_BLUETOOTH):
-      ESP_LOGV(TAG, "Bluetooth command");
+    }
+
+    case CMD_BLUETOOTH:
+      ESP_LOGV(TAG, "Bluetooth");
       break;
-    case lowbyte(CMD_SINGLE_TARGET_MODE):
-      ESP_LOGV(TAG, "Single target conf command");
+
+    case CMD_SINGLE_TARGET_MODE:
+      ESP_LOGV(TAG, "Single target conf");
 #ifdef USE_SWITCH
       if (this->multi_target_switch_ != nullptr) {
         this->multi_target_switch_->publish_state(false);
       }
 #endif
       break;
-    case lowbyte(CMD_MULTI_TARGET_MODE):
-      ESP_LOGV(TAG, "Multi target conf command");
+
+    case CMD_MULTI_TARGET_MODE:
+      ESP_LOGV(TAG, "Multi target conf");
 #ifdef USE_SWITCH
       if (this->multi_target_switch_ != nullptr) {
         this->multi_target_switch_->publish_state(true);
       }
 #endif
       break;
-    case lowbyte(CMD_QUERY_TARGET_MODE):
-      ESP_LOGV(TAG, "Query target tracking mode command");
+
+    case CMD_QUERY_TARGET_MODE:
+      ESP_LOGV(TAG, "Query target tracking mode");
 #ifdef USE_SWITCH
       if (this->multi_target_switch_ != nullptr) {
-        this->multi_target_switch_->publish_state(buffer[10] == 0x02);
+        this->multi_target_switch_->publish_state(this->buffer_data_[10] == 0x02);
       }
 #endif
       break;
-    case lowbyte(CMD_QUERY_ZONE):
-      ESP_LOGV(TAG, "Query zone conf command");
-      this->zone_type_ = std::stoi(std::to_string(buffer[10]), nullptr, 16);
+
+    case CMD_QUERY_ZONE:
+      ESP_LOGV(TAG, "Query zone conf");
+      this->zone_type_ = std::stoi(std::to_string(this->buffer_data_[10]), nullptr, 16);
       this->publish_zone_type();
 #ifdef USE_SELECT
       if (this->zone_type_select_ != nullptr) {
         ESP_LOGV(TAG, "Change zone type to: %s", this->zone_type_select_->state.c_str());
       }
 #endif
-      if (buffer[10] == 0x00) {
+      if (this->buffer_data_[10] == 0x00) {
         ESP_LOGV(TAG, "Zone: Disabled");
       }
-      if (buffer[10] == 0x01) {
+      if (this->buffer_data_[10] == 0x01) {
         ESP_LOGV(TAG, "Zone: Area detection");
       }
-      if (buffer[10] == 0x02) {
+      if (this->buffer_data_[10] == 0x02) {
         ESP_LOGV(TAG, "Zone: Area filter");
       }
-      this->process_zone_(buffer);
+      this->process_zone_();
       break;
-    case lowbyte(CMD_SET_ZONE):
-      ESP_LOGV(TAG, "Set zone conf command");
+
+    case CMD_SET_ZONE:
+      ESP_LOGV(TAG, "Set zone conf");
       this->query_zone_info();
       break;
+
     default:
       break;
   }
@@ -796,55 +834,57 @@ bool LD2450Component::handle_ack_data_(uint8_t *buffer, uint8_t len) {
 }
 
 // Read LD2450 buffer data
-void LD2450Component::readline_(int readch, uint8_t *buffer, uint8_t len) {
+void LD2450Component::readline_(int readch) {
   if (readch < 0) {
-    return;
+    return;  // No data available
   }
-  if (this->buffer_pos_ < len - 1) {
-    buffer[this->buffer_pos_++] = readch;
-    buffer[this->buffer_pos_] = 0;
+
+  if (this->buffer_pos_ < MAX_LINE_LENGTH - 1) {
+    this->buffer_data_[this->buffer_pos_++] = readch;
+    this->buffer_data_[this->buffer_pos_] = 0;
   } else {
+    // We should never get here, but just in case...
+    ESP_LOGW(TAG, "Max command length exceeded; ignoring");
     this->buffer_pos_ = 0;
   }
   if (this->buffer_pos_ < 4) {
-    return;
+    return;  // Not enough data to process yet
   }
-  if (buffer[this->buffer_pos_ - 2] == 0x55 && buffer[this->buffer_pos_ - 1] == 0xCC) {
-    ESP_LOGV(TAG, "Handle periodic radar data");
-    this->handle_periodic_data_(buffer, this->buffer_pos_);
+  if (this->buffer_data_[this->buffer_pos_ - 2] == DATA_FRAME_FOOTER[0] &&
+      this->buffer_data_[this->buffer_pos_ - 1] == DATA_FRAME_FOOTER[1]) {
+    ESP_LOGV(TAG, "Handling Periodic Data: %s", format_hex_pretty(this->buffer_data_, this->buffer_pos_).c_str());
+    this->handle_periodic_data_();
     this->buffer_pos_ = 0;  // Reset position index for next frame
-  } else if (buffer[this->buffer_pos_ - 4] == 0x04 && buffer[this->buffer_pos_ - 3] == 0x03 &&
-             buffer[this->buffer_pos_ - 2] == 0x02 && buffer[this->buffer_pos_ - 1] == 0x01) {
-    ESP_LOGV(TAG, "Handle command ack data");
-    if (this->handle_ack_data_(buffer, this->buffer_pos_)) {
-      this->buffer_pos_ = 0;  // Reset position index for next frame
+  } else if (ld2450::validate_header_footer(CMD_FRAME_FOOTER, &this->buffer_data_[this->buffer_pos_ - 4])) {
+    ESP_LOGV(TAG, "Handling Ack Data: %s", format_hex_pretty(this->buffer_data_, this->buffer_pos_).c_str());
+    if (this->handle_ack_data_()) {
+      this->buffer_pos_ = 0;  // Reset position index for next message
     } else {
-      ESP_LOGV(TAG, "Command ack data invalid");
+      ESP_LOGV(TAG, "Ack Data incomplete");
     }
   }
 }
 
 // Set Config Mode - Pre-requisite sending commands
 void LD2450Component::set_config_mode_(bool enable) {
-  uint8_t cmd = enable ? CMD_ENABLE_CONF : CMD_DISABLE_CONF;
-  uint8_t cmd_value[2] = {0x01, 0x00};
-  this->send_command_(cmd, enable ? cmd_value : nullptr, 2);
+  const uint8_t cmd = enable ? CMD_ENABLE_CONF : CMD_DISABLE_CONF;
+  const uint8_t cmd_value[2] = {0x01, 0x00};
+  this->send_command_(cmd, enable ? cmd_value : nullptr, sizeof(cmd_value));
 }
 
 // Set Bluetooth Enable/Disable
 void LD2450Component::set_bluetooth(bool enable) {
   this->set_config_mode_(true);
-  uint8_t enable_cmd_value[2] = {0x01, 0x00};
-  uint8_t disable_cmd_value[2] = {0x00, 0x00};
-  this->send_command_(CMD_BLUETOOTH, enable ? enable_cmd_value : disable_cmd_value, 2);
+  const uint8_t cmd_value[2] = {enable ? (uint8_t) 0x01 : (uint8_t) 0x00, 0x00};
+  this->send_command_(CMD_BLUETOOTH, cmd_value, sizeof(cmd_value));
   this->set_timeout(200, [this]() { this->restart_and_read_all_info(); });
 }
 
 // Set Baud rate
 void LD2450Component::set_baud_rate(const std::string &state) {
   this->set_config_mode_(true);
-  uint8_t cmd_value[2] = {find_uint8(BAUD_RATES_BY_STR, state), 0x00};
-  this->send_command_(CMD_SET_BAUD_RATE, cmd_value, 2);
+  const uint8_t cmd_value[2] = {find_uint8(BAUD_RATES_BY_STR, state), 0x00};
+  this->send_command_(CMD_SET_BAUD_RATE, cmd_value, sizeof(cmd_value));
   this->set_timeout(200, [this]() { this->restart_(); });
 }
 
@@ -885,12 +925,12 @@ void LD2450Component::factory_reset() {
 void LD2450Component::restart_() { this->send_command_(CMD_RESTART, nullptr, 0); }
 
 // Get LD2450 firmware version
-void LD2450Component::get_version_() { this->send_command_(CMD_VERSION, nullptr, 0); }
+void LD2450Component::get_version_() { this->send_command_(CMD_QUERY_VERSION, nullptr, 0); }
 
 // Get LD2450 mac address
 void LD2450Component::get_mac_() {
   uint8_t cmd_value[2] = {0x01, 0x00};
-  this->send_command_(CMD_MAC, cmd_value, 2);
+  this->send_command_(CMD_QUERY_MAC_ADDRESS, cmd_value, 2);
 }
 
 // Query for target tracking mode
diff --git a/esphome/components/ld2450/ld2450.h b/esphome/components/ld2450/ld2450.h
index 5ddccab638..ae72a0d8cb 100644
--- a/esphome/components/ld2450/ld2450.h
+++ b/esphome/components/ld2450/ld2450.h
@@ -38,10 +38,18 @@ namespace ld2450 {
 
 // Constants
 static const uint8_t DEFAULT_PRESENCE_TIMEOUT = 5;  // Timeout to reset presense status 5 sec.
-static const uint8_t MAX_LINE_LENGTH = 60;          // Max characters for serial buffer
+static const uint8_t MAX_LINE_LENGTH = 41;          // Max characters for serial buffer
 static const uint8_t MAX_TARGETS = 3;               // Max 3 Targets in LD2450
 static const uint8_t MAX_ZONES = 3;                 // Max 3 Zones in LD2450
 
+enum Direction : uint8_t {
+  DIRECTION_APPROACHING = 0,
+  DIRECTION_MOVING_AWAY = 1,
+  DIRECTION_STATIONARY = 2,
+  DIRECTION_NA = 3,
+  DIRECTION_UNDEFINED = 4,
+};
+
 // Target coordinate struct
 struct Target {
   int16_t x;
@@ -67,19 +75,22 @@ struct ZoneOfNumbers {
 #endif
 
 class LD2450Component : public Component, public uart::UARTDevice {
-#ifdef USE_SENSOR
-  SUB_SENSOR(target_count)
-  SUB_SENSOR(still_target_count)
-  SUB_SENSOR(moving_target_count)
-#endif
 #ifdef USE_BINARY_SENSOR
-  SUB_BINARY_SENSOR(target)
   SUB_BINARY_SENSOR(moving_target)
   SUB_BINARY_SENSOR(still_target)
+  SUB_BINARY_SENSOR(target)
+#endif
+#ifdef USE_SENSOR
+  SUB_SENSOR(moving_target_count)
+  SUB_SENSOR(still_target_count)
+  SUB_SENSOR(target_count)
 #endif
 #ifdef USE_TEXT_SENSOR
-  SUB_TEXT_SENSOR(version)
   SUB_TEXT_SENSOR(mac)
+  SUB_TEXT_SENSOR(version)
+#endif
+#ifdef USE_NUMBER
+  SUB_NUMBER(presence_timeout)
 #endif
 #ifdef USE_SELECT
   SUB_SELECT(baud_rate)
@@ -90,12 +101,9 @@ class LD2450Component : public Component, public uart::UARTDevice {
   SUB_SWITCH(multi_target)
 #endif
 #ifdef USE_BUTTON
-  SUB_BUTTON(reset)
+  SUB_BUTTON(factory_reset)
   SUB_BUTTON(restart)
 #endif
-#ifdef USE_NUMBER
-  SUB_NUMBER(presence_timeout)
-#endif
 
  public:
   void setup() override;
@@ -138,10 +146,10 @@ class LD2450Component : public Component, public uart::UARTDevice {
  protected:
   void send_command_(uint8_t command_str, const uint8_t *command_value, uint8_t command_value_len);
   void set_config_mode_(bool enable);
-  void handle_periodic_data_(uint8_t *buffer, uint8_t len);
-  bool handle_ack_data_(uint8_t *buffer, uint8_t len);
-  void process_zone_(uint8_t *buffer);
-  void readline_(int readch, uint8_t *buffer, uint8_t len);
+  void handle_periodic_data_();
+  bool handle_ack_data_();
+  void process_zone_();
+  void readline_(int readch);
   void get_version_();
   void get_mac_();
   void query_target_tracking_mode_();
@@ -159,13 +167,14 @@ class LD2450Component : public Component, public uart::UARTDevice {
   uint32_t moving_presence_millis_ = 0;
   uint16_t throttle_ = 0;
   uint16_t timeout_ = 5;
-  uint8_t buffer_pos_ = 0;  // where to resume processing/populating buffer
   uint8_t buffer_data_[MAX_LINE_LENGTH];
+  uint8_t mac_address_[6] = {0, 0, 0, 0, 0, 0};
+  uint8_t version_[6] = {0, 0, 0, 0, 0, 0};
+  uint8_t buffer_pos_ = 0;  // where to resume processing/populating buffer
   uint8_t zone_type_ = 0;
+  bool bluetooth_on_{false};
   Target target_info_[MAX_TARGETS];
   Zone zone_config_[MAX_ZONES];
-  std::string version_{};
-  std::string mac_{};
 
   // Change detection - cache previous values to avoid redundant publishes
   // All values are initialized to sentinel values that are outside the valid sensor ranges
@@ -176,8 +185,8 @@ class LD2450Component : public Component, public uart::UARTDevice {
     int16_t speed = std::numeric_limits<int16_t>::min();         // -32768, outside practical sensor range
     uint16_t resolution = std::numeric_limits<uint16_t>::max();  // 65535, unlikely resolution value
     uint16_t distance = std::numeric_limits<uint16_t>::max();    // 65535, outside range of 0 to ~8990
+    Direction direction = DIRECTION_UNDEFINED;                   // Undefined, will differ from any real direction
     float angle = NAN;                                           // NAN, safe sentinel for floats
-    std::string direction = "";                                  // Empty string, will differ from any real direction
   } cached_target_data_[MAX_TARGETS];
 
   struct CachedZoneData {
diff --git a/esphome/components/libretiny/helpers.cpp b/esphome/components/libretiny/helpers.cpp
new file mode 100644
index 0000000000..b6451860d5
--- /dev/null
+++ b/esphome/components/libretiny/helpers.cpp
@@ -0,0 +1,35 @@
+#include "esphome/core/helpers.h"
+
+#ifdef USE_LIBRETINY
+
+#include "esphome/core/hal.h"
+
+#include <WiFi.h>  // for macAddress()
+
+namespace esphome {
+
+uint32_t random_uint32() { return rand(); }
+
+bool random_bytes(uint8_t *data, size_t len) {
+  lt_rand_bytes(data, len);
+  return true;
+}
+
+Mutex::Mutex() { handle_ = xSemaphoreCreateMutex(); }
+Mutex::~Mutex() {}
+void Mutex::lock() { xSemaphoreTake(this->handle_, portMAX_DELAY); }
+bool Mutex::try_lock() { return xSemaphoreTake(this->handle_, 0) == pdTRUE; }
+void Mutex::unlock() { xSemaphoreGive(this->handle_); }
+
+// only affects the executing core
+// so should not be used as a mutex lock, only to get accurate timing
+IRAM_ATTR InterruptLock::InterruptLock() { portDISABLE_INTERRUPTS(); }
+IRAM_ATTR InterruptLock::~InterruptLock() { portENABLE_INTERRUPTS(); }
+
+void get_mac_address_raw(uint8_t *mac) {  // NOLINT(readability-non-const-parameter)
+  WiFi.macAddress(mac);
+}
+
+}  // namespace esphome
+
+#endif  // USE_LIBRETINY
diff --git a/esphome/components/nextion/base_component.py b/esphome/components/nextion/base_component.py
index 98dea4b513..392481e39a 100644
--- a/esphome/components/nextion/base_component.py
+++ b/esphome/components/nextion/base_component.py
@@ -11,6 +11,7 @@ CONF_AUTO_WAKE_ON_TOUCH = "auto_wake_on_touch"
 CONF_BACKGROUND_PRESSED_COLOR = "background_pressed_color"
 CONF_COMMAND_SPACING = "command_spacing"
 CONF_COMPONENT_NAME = "component_name"
+CONF_DUMP_DEVICE_INFO = "dump_device_info"
 CONF_EXIT_REPARSE_ON_START = "exit_reparse_on_start"
 CONF_FONT_ID = "font_id"
 CONF_FOREGROUND_PRESSED_COLOR = "foreground_pressed_color"
diff --git a/esphome/components/nextion/display.py b/esphome/components/nextion/display.py
index 420f8f69c5..4254ae45fe 100644
--- a/esphome/components/nextion/display.py
+++ b/esphome/components/nextion/display.py
@@ -15,6 +15,7 @@ from . import Nextion, nextion_ns, nextion_ref
 from .base_component import (
     CONF_AUTO_WAKE_ON_TOUCH,
     CONF_COMMAND_SPACING,
+    CONF_DUMP_DEVICE_INFO,
     CONF_EXIT_REPARSE_ON_START,
     CONF_MAX_COMMANDS_PER_LOOP,
     CONF_MAX_QUEUE_SIZE,
@@ -57,6 +58,7 @@ CONFIG_SCHEMA = (
                 cv.positive_time_period_milliseconds,
                 cv.Range(max=TimePeriod(milliseconds=255)),
             ),
+            cv.Optional(CONF_DUMP_DEVICE_INFO, default=False): cv.boolean,
             cv.Optional(CONF_EXIT_REPARSE_ON_START, default=False): cv.boolean,
             cv.Optional(CONF_MAX_COMMANDS_PER_LOOP): cv.uint16_t,
             cv.Optional(CONF_MAX_QUEUE_SIZE): cv.positive_int,
@@ -95,7 +97,9 @@ CONFIG_SCHEMA = (
             cv.Optional(CONF_SKIP_CONNECTION_HANDSHAKE, default=False): cv.boolean,
             cv.Optional(CONF_START_UP_PAGE): cv.uint8_t,
             cv.Optional(CONF_TFT_URL): cv.url,
-            cv.Optional(CONF_TOUCH_SLEEP_TIMEOUT): cv.int_range(min=3, max=65535),
+            cv.Optional(CONF_TOUCH_SLEEP_TIMEOUT): cv.Any(
+                0, cv.int_range(min=3, max=65535)
+            ),
             cv.Optional(CONF_WAKE_UP_PAGE): cv.uint8_t,
         }
     )
@@ -172,9 +176,14 @@ async def to_code(config):
 
     cg.add(var.set_auto_wake_on_touch(config[CONF_AUTO_WAKE_ON_TOUCH]))
 
-    cg.add(var.set_exit_reparse_on_start(config[CONF_EXIT_REPARSE_ON_START]))
+    if config[CONF_DUMP_DEVICE_INFO]:
+        cg.add_define("USE_NEXTION_CONFIG_DUMP_DEVICE_INFO")
 
-    cg.add(var.set_skip_connection_handshake(config[CONF_SKIP_CONNECTION_HANDSHAKE]))
+    if config[CONF_EXIT_REPARSE_ON_START]:
+        cg.add_define("USE_NEXTION_CONFIG_EXIT_REPARSE_ON_START")
+
+    if config[CONF_SKIP_CONNECTION_HANDSHAKE]:
+        cg.add_define("USE_NEXTION_CONFIG_SKIP_CONNECTION_HANDSHAKE")
 
     if max_commands_per_loop := config.get(CONF_MAX_COMMANDS_PER_LOOP):
         cg.add_define("USE_NEXTION_MAX_COMMANDS_PER_LOOP")
diff --git a/esphome/components/nextion/nextion.cpp b/esphome/components/nextion/nextion.cpp
index d95238bbb4..66e2d26061 100644
--- a/esphome/components/nextion/nextion.cpp
+++ b/esphome/components/nextion/nextion.cpp
@@ -13,14 +13,11 @@ void Nextion::setup() {
   this->is_setup_ = false;
   this->connection_state_.ignore_is_setup_ = true;
 
-  // Wake up the nextion
-  this->send_command_("bkcmd=0");
-  this->send_command_("sleep=0");
+  // Wake up the nextion and ensure clean communication state
+  this->send_command_("sleep=0");  // Exit sleep mode if sleeping
+  this->send_command_("bkcmd=0");  // Disable return data during init sequence
 
-  this->send_command_("bkcmd=0");
-  this->send_command_("sleep=0");
-
-  // Reboot it
+  // Reset device for clean state - critical for reliable communication
   this->send_command_("rest");
 
   this->connection_state_.ignore_is_setup_ = false;
@@ -51,24 +48,19 @@ bool Nextion::check_connect_() {
   if (this->connection_state_.is_connected_)
     return true;
 
-  // Check if the handshake should be skipped for the Nextion connection
-  if (this->skip_connection_handshake_) {
-    // Log the connection status without handshake
-    ESP_LOGW(TAG, "Connected (no handshake)");
-    // Set the connection status to true
-    this->connection_state_.is_connected_ = true;
-    // Return true indicating the connection is set
-    return true;
-  }
-
+#ifdef USE_NEXTION_CONFIG_SKIP_CONNECTION_HANDSHAKE
+  ESP_LOGW(TAG, "Connected (no handshake)");  // Log the connection status without handshake
+  this->is_connected_ = true;                 // Set the connection status to true
+  return true;                                // Return true indicating the connection is set
+#else                                         // USE_NEXTION_CONFIG_SKIP_CONNECTION_HANDSHAKE
   if (this->comok_sent_ == 0) {
     this->reset_(false);
 
     this->connection_state_.ignore_is_setup_ = true;
     this->send_command_("boguscommand=0");  // bogus command. needed sometimes after updating
-    if (this->exit_reparse_on_start_) {
-      this->send_command_("DRAKJHSUYDGBNCJHGJKSHBDN");
-    }
+#ifdef USE_NEXTION_CONFIG_EXIT_REPARSE_ON_START
+    this->send_command_("DRAKJHSUYDGBNCJHGJKSHBDN");
+#endif  // USE_NEXTION_CONFIG_EXIT_REPARSE_ON_START
     this->send_command_("connect");
 
     this->comok_sent_ = App.get_loop_component_start_time();
@@ -94,7 +86,7 @@ bool Nextion::check_connect_() {
     for (size_t i = 0; i < response.length(); i++) {
       ESP_LOGN(TAG, "resp: %s %d %d %c", response.c_str(), i, response[i], response[i]);
     }
-#endif
+#endif  // NEXTION_PROTOCOL_LOG
 
     ESP_LOGW(TAG, "Not connected");
     comok_sent_ = 0;
@@ -118,11 +110,19 @@ bool Nextion::check_connect_() {
   this->is_detected_ = (connect_info.size() == 7);
   if (this->is_detected_) {
     ESP_LOGN(TAG, "Connect info: %zu", connect_info.size());
-
+#ifdef USE_NEXTION_CONFIG_DUMP_DEVICE_INFO
     this->device_model_ = connect_info[2];
     this->firmware_version_ = connect_info[3];
     this->serial_number_ = connect_info[5];
     this->flash_size_ = connect_info[6];
+#else   // USE_NEXTION_CONFIG_DUMP_DEVICE_INFO
+    ESP_LOGI(TAG,
+             "  Device Model:   %s\n"
+             "  FW Version:     %s\n"
+             "  Serial Number:  %s\n"
+             "  Flash Size:     %s\n",
+             connect_info[2].c_str(), connect_info[3].c_str(), connect_info[5].c_str(), connect_info[6].c_str());
+#endif  // USE_NEXTION_CONFIG_DUMP_DEVICE_INFO
   } else {
     ESP_LOGE(TAG, "Bad connect value: '%s'", response.c_str());
   }
@@ -130,6 +130,7 @@ bool Nextion::check_connect_() {
   this->connection_state_.ignore_is_setup_ = false;
   this->dump_config();
   return true;
+#endif  // USE_NEXTION_CONFIG_SKIP_CONNECTION_HANDSHAKE
 }
 
 void Nextion::reset_(bool reset_nextion) {
@@ -144,29 +145,33 @@ void Nextion::reset_(bool reset_nextion) {
 
 void Nextion::dump_config() {
   ESP_LOGCONFIG(TAG, "Nextion:");
-  if (this->skip_connection_handshake_) {
-    ESP_LOGCONFIG(TAG, "  Skip handshake: %s", YESNO(this->skip_connection_handshake_));
-  } else {
-    ESP_LOGCONFIG(TAG,
-                  "  Device Model:   %s\n"
-                  "  FW Version:     %s\n"
-                  "  Serial Number:  %s\n"
-                  "  Flash Size:     %s",
-                  this->device_model_.c_str(), this->firmware_version_.c_str(), this->serial_number_.c_str(),
-                  this->flash_size_.c_str());
-  }
+
+#ifdef USE_NEXTION_CONFIG_SKIP_CONNECTION_HANDSHAKE
+  ESP_LOGCONFIG(TAG, "  Skip handshake: YES");
+#else  // USE_NEXTION_CONFIG_SKIP_CONNECTION_HANDSHAKE
   ESP_LOGCONFIG(TAG,
+#ifdef USE_NEXTION_CONFIG_DUMP_DEVICE_INFO
+                "  Device Model:   %s\n"
+                "  FW Version:     %s\n"
+                "  Serial Number:  %s\n"
+                "  Flash Size:     %s\n"
+#endif  // USE_NEXTION_CONFIG_DUMP_DEVICE_INFO
+#ifdef USE_NEXTION_CONFIG_EXIT_REPARSE_ON_START
+                "  Exit reparse:   YES\n"
+#endif  // USE_NEXTION_CONFIG_EXIT_REPARSE_ON_START
                 "  Wake On Touch:  %s\n"
-                "  Exit reparse:   %s",
-                YESNO(this->connection_state_.auto_wake_on_touch_), YESNO(this->exit_reparse_on_start_));
+                "  Touch Timeout:  %" PRIu16,
+#ifdef USE_NEXTION_CONFIG_DUMP_DEVICE_INFO
+                this->device_model_.c_str(), this->firmware_version_.c_str(), this->serial_number_.c_str(),
+                this->flash_size_.c_str(),
+#endif  // USE_NEXTION_CONFIG_DUMP_DEVICE_INFO
+                YESNO(this->connection_state_.auto_wake_on_touch_), this->touch_sleep_timeout_);
+#endif  // USE_NEXTION_CONFIG_SKIP_CONNECTION_HANDSHAKE
+
 #ifdef USE_NEXTION_MAX_COMMANDS_PER_LOOP
   ESP_LOGCONFIG(TAG, "  Max commands per loop: %u", this->max_commands_per_loop_);
 #endif  // USE_NEXTION_MAX_COMMANDS_PER_LOOP
 
-  if (this->touch_sleep_timeout_ != 0) {
-    ESP_LOGCONFIG(TAG, "  Touch Timeout:  %" PRIu16, this->touch_sleep_timeout_);
-  }
-
   if (this->wake_up_page_ != 255) {
     ESP_LOGCONFIG(TAG, "  Wake Up Page:   %u", this->wake_up_page_);
   }
@@ -314,6 +319,10 @@ void Nextion::loop() {
       this->set_wake_up_page(this->wake_up_page_);
     }
 
+    if (this->touch_sleep_timeout_ != 0) {
+      this->set_touch_sleep_timeout(this->touch_sleep_timeout_);
+    }
+
     this->connection_state_.ignore_is_setup_ = false;
   }
 
diff --git a/esphome/components/nextion/nextion.h b/esphome/components/nextion/nextion.h
index 0ce9429594..e2c4faa1d0 100644
--- a/esphome/components/nextion/nextion.h
+++ b/esphome/components/nextion/nextion.h
@@ -932,21 +932,6 @@ class Nextion : public NextionBase, public PollingComponent, public uart::UARTDe
    */
   void set_backlight_brightness(float brightness);
 
-  /**
-   * Sets whether the Nextion display should skip the connection handshake process.
-   * @param skip_handshake True or false. When skip_connection_handshake is true,
-   * the connection will be established without performing the handshake.
-   * This can be useful when using Nextion Simulator.
-   *
-   * Example:
-   * ```cpp
-   * it.set_skip_connection_handshake(true);
-   * ```
-   *
-   * When set to true, the display will be marked as connected without performing a handshake.
-   */
-  void set_skip_connection_handshake(bool skip_handshake) { this->skip_connection_handshake_ = skip_handshake; }
-
   /**
    * Sets Nextion mode between sleep and awake
    * @param True or false. Sleep=true to enter sleep mode or sleep=false to exit sleep mode.
@@ -1179,18 +1164,39 @@ class Nextion : public NextionBase, public PollingComponent, public uart::UARTDe
   void update_components_by_prefix(const std::string &prefix);
 
   /**
-   * Set the touch sleep timeout of the display.
-   * @param timeout Timeout in seconds.
+   * Set the touch sleep timeout of the display using the `thsp` command.
+   *
+   * Sets internal No-touch-then-sleep timer to specified value in seconds.
+   * Nextion will auto-enter sleep mode if and when this timer expires.
+   *
+   * @param touch_sleep_timeout Timeout in seconds.
+   *                           Range: 3 to 65535 seconds (minimum 3 seconds, maximum ~18 hours 12 minutes 15 seconds)
+   *                           Use 0 to disable touch sleep timeout.
+   *
+   * @note Once `thsp` is set, it will persist until reboot or reset. The Nextion device
+   *       needs to exit sleep mode to issue `thsp=0` to disable sleep on no touch.
+   *
+   * @note The display will only wake up by a restart or by setting up `thup` (auto wake on touch).
+   *       See set_auto_wake_on_touch() to configure wake behavior.
    *
    * Example:
    * ```cpp
+   * // Set 30 second touch timeout
    * it.set_touch_sleep_timeout(30);
+   *
+   * // Set maximum timeout (~18 hours)
+   * it.set_touch_sleep_timeout(65535);
+   *
+   * // Disable touch sleep timeout
+   * it.set_touch_sleep_timeout(0);
    * ```
    *
-   * After 30 seconds the display will go to sleep. Note: the display will only wakeup by a restart or by setting up
-   * `thup`.
+   * Related Nextion instruction: `thsp=<value>`
+   *
+   * @see set_auto_wake_on_touch() Configure automatic wake on touch
+   * @see sleep() Manually control sleep state
    */
-  void set_touch_sleep_timeout(uint16_t touch_sleep_timeout);
+  void set_touch_sleep_timeout(uint16_t touch_sleep_timeout = 0);
 
   /**
    * Sets which page Nextion loads when exiting sleep mode. Note this can be set even when Nextion is in sleep mode.
@@ -1236,20 +1242,6 @@ class Nextion : public NextionBase, public PollingComponent, public uart::UARTDe
    */
   void set_auto_wake_on_touch(bool auto_wake_on_touch);
 
-  /**
-   * Sets if Nextion should exit the active reparse mode before the "connect" command is sent
-   * @param exit_reparse_on_start True or false. When exit_reparse_on_start is true, the exit reparse command
-   * will be sent before requesting the connection from Nextion.
-   *
-   * Example:
-   * ```cpp
-   * it.set_exit_reparse_on_start(true);
-   * ```
-   *
-   * The display will be requested to leave active reparse mode before setup.
-   */
-  void set_exit_reparse_on_start(bool exit_reparse_on_start) { this->exit_reparse_on_start_ = exit_reparse_on_start; }
-
   /**
    * @brief Retrieves the number of commands pending in the Nextion command queue.
    *
@@ -1292,7 +1284,7 @@ class Nextion : public NextionBase, public PollingComponent, public uart::UARTDe
    * the Nextion display. A connection is considered established when:
    *
    * - The initial handshake with the display is completed successfully, or
-   * - The handshake is skipped via skip_connection_handshake_ flag
+   * - The handshake is skipped via USE_NEXTION_CONFIG_SKIP_CONNECTION_HANDSHAKE flag
    *
    * The connection status is particularly useful when:
    * - Troubleshooting communication issues
@@ -1358,8 +1350,7 @@ class Nextion : public NextionBase, public PollingComponent, public uart::UARTDe
 #ifdef USE_NEXTION_CONF_START_UP_PAGE
   uint8_t start_up_page_ = 255;
 #endif  // USE_NEXTION_CONF_START_UP_PAGE
-  bool exit_reparse_on_start_ = false;
-  bool skip_connection_handshake_ = false;
+  bool auto_wake_on_touch_ = true;
 
   /**
    * Manually send a raw command to the display and don't wait for an acknowledgement packet.
@@ -1466,10 +1457,12 @@ class Nextion : public NextionBase, public PollingComponent, public uart::UARTDe
   optional<nextion_writer_t> writer_;
   optional<float> brightness_;
 
+#ifdef USE_NEXTION_CONFIG_DUMP_DEVICE_INFO
   std::string device_model_;
   std::string firmware_version_;
   std::string serial_number_;
   std::string flash_size_;
+#endif  // USE_NEXTION_CONFIG_DUMP_DEVICE_INFO
 
   void remove_front_no_sensors_();
 
diff --git a/esphome/components/nextion/nextion_commands.cpp b/esphome/components/nextion/nextion_commands.cpp
index 018f8fe732..f3a282717b 100644
--- a/esphome/components/nextion/nextion_commands.cpp
+++ b/esphome/components/nextion/nextion_commands.cpp
@@ -15,14 +15,15 @@ void Nextion::set_wake_up_page(uint8_t wake_up_page) {
   this->add_no_result_to_queue_with_set_internal_("wake_up_page", "wup", wake_up_page, true);
 }
 
-void Nextion::set_touch_sleep_timeout(uint16_t touch_sleep_timeout) {
-  if (touch_sleep_timeout < 3) {
-    ESP_LOGD(TAG, "Sleep timeout out of bounds (3-65535)");
-    return;
+void Nextion::set_touch_sleep_timeout(const uint16_t touch_sleep_timeout) {
+  // Validate range: Nextion thsp command requires min 3, max 65535 seconds (0 disables)
+  if (touch_sleep_timeout != 0 && touch_sleep_timeout < 3) {
+    this->touch_sleep_timeout_ = 3;  // Auto-correct to minimum valid value
+  } else {
+    this->touch_sleep_timeout_ = touch_sleep_timeout;
   }
 
-  this->touch_sleep_timeout_ = touch_sleep_timeout;
-  this->add_no_result_to_queue_with_set_internal_("touch_sleep_timeout", "thsp", touch_sleep_timeout, true);
+  this->add_no_result_to_queue_with_set_internal_("touch_sleep_timeout", "thsp", this->touch_sleep_timeout_, true);
 }
 
 void Nextion::sleep(bool sleep) {
diff --git a/esphome/components/rp2040/helpers.cpp b/esphome/components/rp2040/helpers.cpp
new file mode 100644
index 0000000000..a6eac58dc6
--- /dev/null
+++ b/esphome/components/rp2040/helpers.cpp
@@ -0,0 +1,55 @@
+#include "esphome/core/helpers.h"
+#include "esphome/core/defines.h"
+
+#ifdef USE_RP2040
+
+#include "esphome/core/hal.h"
+
+#if defined(USE_WIFI)
+#include <WiFi.h>
+#endif
+#include <hardware/structs/rosc.h>
+#include <hardware/sync.h>
+
+namespace esphome {
+
+uint32_t random_uint32() {
+  uint32_t result = 0;
+  for (uint8_t i = 0; i < 32; i++) {
+    result <<= 1;
+    result |= rosc_hw->randombit;
+  }
+  return result;
+}
+
+bool random_bytes(uint8_t *data, size_t len) {
+  while (len-- != 0) {
+    uint8_t result = 0;
+    for (uint8_t i = 0; i < 8; i++) {
+      result <<= 1;
+      result |= rosc_hw->randombit;
+    }
+    *data++ = result;
+  }
+  return true;
+}
+
+// RP2040 doesn't have mutexes, but that shouldn't be an issue as it's single-core and non-preemptive OS.
+Mutex::Mutex() {}
+Mutex::~Mutex() {}
+void Mutex::lock() {}
+bool Mutex::try_lock() { return true; }
+void Mutex::unlock() {}
+
+IRAM_ATTR InterruptLock::InterruptLock() { state_ = save_and_disable_interrupts(); }
+IRAM_ATTR InterruptLock::~InterruptLock() { restore_interrupts(state_); }
+
+void get_mac_address_raw(uint8_t *mac) {  // NOLINT(readability-non-const-parameter)
+#ifdef USE_WIFI
+  WiFi.macAddress(mac);
+#endif
+}
+
+}  // namespace esphome
+
+#endif  // USE_RP2040
diff --git a/esphome/components/sx126x/__init__.py b/esphome/components/sx126x/__init__.py
new file mode 100644
index 0000000000..492febe283
--- /dev/null
+++ b/esphome/components/sx126x/__init__.py
@@ -0,0 +1,317 @@
+from esphome import automation, pins
+import esphome.codegen as cg
+from esphome.components import spi
+import esphome.config_validation as cv
+from esphome.const import CONF_BUSY_PIN, CONF_DATA, CONF_FREQUENCY, CONF_ID
+from esphome.core import TimePeriod
+
+MULTI_CONF = True
+CODEOWNERS = ["@swoboda1337"]
+DEPENDENCIES = ["spi"]
+
+CONF_SX126X_ID = "sx126x_id"
+
+CONF_BANDWIDTH = "bandwidth"
+CONF_BITRATE = "bitrate"
+CONF_CODING_RATE = "coding_rate"
+CONF_CRC_ENABLE = "crc_enable"
+CONF_DEVIATION = "deviation"
+CONF_DIO1_PIN = "dio1_pin"
+CONF_HW_VERSION = "hw_version"
+CONF_MODULATION = "modulation"
+CONF_ON_PACKET = "on_packet"
+CONF_PA_POWER = "pa_power"
+CONF_PA_RAMP = "pa_ramp"
+CONF_PAYLOAD_LENGTH = "payload_length"
+CONF_PREAMBLE_DETECT = "preamble_detect"
+CONF_PREAMBLE_SIZE = "preamble_size"
+CONF_RST_PIN = "rst_pin"
+CONF_RX_START = "rx_start"
+CONF_RF_SWITCH = "rf_switch"
+CONF_SHAPING = "shaping"
+CONF_SPREADING_FACTOR = "spreading_factor"
+CONF_SYNC_VALUE = "sync_value"
+CONF_TCXO_VOLTAGE = "tcxo_voltage"
+CONF_TCXO_DELAY = "tcxo_delay"
+
+sx126x_ns = cg.esphome_ns.namespace("sx126x")
+SX126x = sx126x_ns.class_("SX126x", cg.Component, spi.SPIDevice)
+SX126xListener = sx126x_ns.class_("SX126xListener")
+SX126xBw = sx126x_ns.enum("SX126xBw")
+SX126xPacketType = sx126x_ns.enum("SX126xPacketType")
+SX126xTcxoCtrl = sx126x_ns.enum("SX126xTcxoCtrl")
+SX126xRampTime = sx126x_ns.enum("SX126xRampTime")
+SX126xPulseShape = sx126x_ns.enum("SX126xPulseShape")
+SX126xLoraCr = sx126x_ns.enum("SX126xLoraCr")
+
+BW = {
+    "4_8kHz": SX126xBw.SX126X_BW_4800,
+    "5_8kHz": SX126xBw.SX126X_BW_5800,
+    "7_3kHz": SX126xBw.SX126X_BW_7300,
+    "9_7kHz": SX126xBw.SX126X_BW_9700,
+    "11_7kHz": SX126xBw.SX126X_BW_11700,
+    "14_6kHz": SX126xBw.SX126X_BW_14600,
+    "19_5kHz": SX126xBw.SX126X_BW_19500,
+    "23_4kHz": SX126xBw.SX126X_BW_23400,
+    "29_3kHz": SX126xBw.SX126X_BW_29300,
+    "39_0kHz": SX126xBw.SX126X_BW_39000,
+    "46_9kHz": SX126xBw.SX126X_BW_46900,
+    "58_6kHz": SX126xBw.SX126X_BW_58600,
+    "78_2kHz": SX126xBw.SX126X_BW_78200,
+    "93_8kHz": SX126xBw.SX126X_BW_93800,
+    "117_3kHz": SX126xBw.SX126X_BW_117300,
+    "156_2kHz": SX126xBw.SX126X_BW_156200,
+    "187_2kHz": SX126xBw.SX126X_BW_187200,
+    "234_3kHz": SX126xBw.SX126X_BW_234300,
+    "312_0kHz": SX126xBw.SX126X_BW_312000,
+    "373_6kHz": SX126xBw.SX126X_BW_373600,
+    "467_0kHz": SX126xBw.SX126X_BW_467000,
+    "7_8kHz": SX126xBw.SX126X_BW_7810,
+    "10_4kHz": SX126xBw.SX126X_BW_10420,
+    "15_6kHz": SX126xBw.SX126X_BW_15630,
+    "20_8kHz": SX126xBw.SX126X_BW_20830,
+    "31_3kHz": SX126xBw.SX126X_BW_31250,
+    "41_7kHz": SX126xBw.SX126X_BW_41670,
+    "62_5kHz": SX126xBw.SX126X_BW_62500,
+    "125_0kHz": SX126xBw.SX126X_BW_125000,
+    "250_0kHz": SX126xBw.SX126X_BW_250000,
+    "500_0kHz": SX126xBw.SX126X_BW_500000,
+}
+
+CODING_RATE = {
+    "CR_4_5": SX126xLoraCr.LORA_CR_4_5,
+    "CR_4_6": SX126xLoraCr.LORA_CR_4_6,
+    "CR_4_7": SX126xLoraCr.LORA_CR_4_7,
+    "CR_4_8": SX126xLoraCr.LORA_CR_4_8,
+}
+
+MOD = {
+    "LORA": SX126xPacketType.PACKET_TYPE_LORA,
+    "FSK": SX126xPacketType.PACKET_TYPE_GFSK,
+}
+
+TCXO_VOLTAGE = {
+    "1_6V": SX126xTcxoCtrl.TCXO_CTRL_1_6V,
+    "1_7V": SX126xTcxoCtrl.TCXO_CTRL_1_7V,
+    "1_8V": SX126xTcxoCtrl.TCXO_CTRL_1_8V,
+    "2_2V": SX126xTcxoCtrl.TCXO_CTRL_2_2V,
+    "2_4V": SX126xTcxoCtrl.TCXO_CTRL_2_4V,
+    "2_7V": SX126xTcxoCtrl.TCXO_CTRL_2_7V,
+    "3_0V": SX126xTcxoCtrl.TCXO_CTRL_3_0V,
+    "3_3V": SX126xTcxoCtrl.TCXO_CTRL_3_3V,
+    "NONE": SX126xTcxoCtrl.TCXO_CTRL_NONE,
+}
+
+RAMP = {
+    "10us": SX126xRampTime.PA_RAMP_10,
+    "20us": SX126xRampTime.PA_RAMP_20,
+    "40us": SX126xRampTime.PA_RAMP_40,
+    "80us": SX126xRampTime.PA_RAMP_80,
+    "200us": SX126xRampTime.PA_RAMP_200,
+    "800us": SX126xRampTime.PA_RAMP_800,
+    "1700us": SX126xRampTime.PA_RAMP_1700,
+    "3400us": SX126xRampTime.PA_RAMP_3400,
+}
+
+SHAPING = {
+    "GAUSSIAN_BT_0_3": SX126xPulseShape.GAUSSIAN_BT_0_3,
+    "GAUSSIAN_BT_0_5": SX126xPulseShape.GAUSSIAN_BT_0_5,
+    "GAUSSIAN_BT_0_7": SX126xPulseShape.GAUSSIAN_BT_0_7,
+    "GAUSSIAN_BT_1_0": SX126xPulseShape.GAUSSIAN_BT_1_0,
+    "NONE": SX126xPulseShape.NO_FILTER,
+}
+
+RunImageCalAction = sx126x_ns.class_(
+    "RunImageCalAction", automation.Action, cg.Parented.template(SX126x)
+)
+SendPacketAction = sx126x_ns.class_(
+    "SendPacketAction", automation.Action, cg.Parented.template(SX126x)
+)
+SetModeTxAction = sx126x_ns.class_(
+    "SetModeTxAction", automation.Action, cg.Parented.template(SX126x)
+)
+SetModeRxAction = sx126x_ns.class_(
+    "SetModeRxAction", automation.Action, cg.Parented.template(SX126x)
+)
+SetModeSleepAction = sx126x_ns.class_(
+    "SetModeSleepAction", automation.Action, cg.Parented.template(SX126x)
+)
+SetModeStandbyAction = sx126x_ns.class_(
+    "SetModeStandbyAction", automation.Action, cg.Parented.template(SX126x)
+)
+
+
+def validate_raw_data(value):
+    if isinstance(value, str):
+        return value.encode("utf-8")
+    if isinstance(value, list):
+        return cv.Schema([cv.hex_uint8_t])(value)
+    raise cv.Invalid(
+        "data must either be a string wrapped in quotes or a list of bytes"
+    )
+
+
+def validate_config(config):
+    lora_bws = [
+        "7_8kHz",
+        "10_4kHz",
+        "15_6kHz",
+        "20_8kHz",
+        "31_3kHz",
+        "41_7kHz",
+        "62_5kHz",
+        "125_0kHz",
+        "250_0kHz",
+        "500_0kHz",
+    ]
+    if config[CONF_MODULATION] == "LORA":
+        if config[CONF_BANDWIDTH] not in lora_bws:
+            raise cv.Invalid(f"{config[CONF_BANDWIDTH]} is not available with LORA")
+        if config[CONF_PREAMBLE_SIZE] > 0 and config[CONF_PREAMBLE_SIZE] < 6:
+            raise cv.Invalid("Minimum preamble size is 6 with LORA")
+        if config[CONF_SPREADING_FACTOR] == 6 and config[CONF_PAYLOAD_LENGTH] == 0:
+            raise cv.Invalid("Payload length must be set when spreading factor is 6")
+    else:
+        if config[CONF_BANDWIDTH] in lora_bws:
+            raise cv.Invalid(f"{config[CONF_BANDWIDTH]} is not available with FSK")
+        if config[CONF_PREAMBLE_DETECT] > len(config[CONF_SYNC_VALUE]):
+            raise cv.Invalid("Preamble detection length must be <= sync value length")
+    return config
+
+
+CONFIG_SCHEMA = (
+    cv.Schema(
+        {
+            cv.GenerateID(): cv.declare_id(SX126x),
+            cv.Optional(CONF_BANDWIDTH, default="125_0kHz"): cv.enum(BW),
+            cv.Optional(CONF_BITRATE, default=4800): cv.int_range(min=600, max=300000),
+            cv.Required(CONF_BUSY_PIN): pins.internal_gpio_input_pin_schema,
+            cv.Optional(CONF_CODING_RATE, default="CR_4_5"): cv.enum(CODING_RATE),
+            cv.Optional(CONF_CRC_ENABLE, default=False): cv.boolean,
+            cv.Optional(CONF_DEVIATION, default=5000): cv.int_range(min=0, max=100000),
+            cv.Required(CONF_DIO1_PIN): pins.internal_gpio_input_pin_schema,
+            cv.Required(CONF_FREQUENCY): cv.int_range(min=137000000, max=1020000000),
+            cv.Required(CONF_HW_VERSION): cv.one_of(
+                "sx1261", "sx1262", "sx1268", "llcc68", lower=True
+            ),
+            cv.Required(CONF_MODULATION): cv.enum(MOD),
+            cv.Optional(CONF_ON_PACKET): automation.validate_automation(single=True),
+            cv.Optional(CONF_PA_POWER, default=17): cv.int_range(min=-3, max=22),
+            cv.Optional(CONF_PA_RAMP, default="40us"): cv.enum(RAMP),
+            cv.Optional(CONF_PAYLOAD_LENGTH, default=0): cv.int_range(min=0, max=256),
+            cv.Optional(CONF_PREAMBLE_DETECT, default=2): cv.int_range(min=0, max=4),
+            cv.Required(CONF_PREAMBLE_SIZE): cv.int_range(min=1, max=65535),
+            cv.Required(CONF_RST_PIN): pins.internal_gpio_output_pin_schema,
+            cv.Optional(CONF_RX_START, default=True): cv.boolean,
+            cv.Required(CONF_RF_SWITCH): cv.boolean,
+            cv.Optional(CONF_SHAPING, default="NONE"): cv.enum(SHAPING),
+            cv.Optional(CONF_SPREADING_FACTOR, default=7): cv.int_range(min=6, max=12),
+            cv.Optional(CONF_SYNC_VALUE, default=[]): cv.ensure_list(cv.hex_uint8_t),
+            cv.Optional(CONF_TCXO_VOLTAGE, default="NONE"): cv.enum(TCXO_VOLTAGE),
+            cv.Optional(CONF_TCXO_DELAY, default="5ms"): cv.All(
+                cv.positive_time_period_microseconds,
+                cv.Range(max=TimePeriod(microseconds=262144000)),
+            ),
+        },
+    )
+    .extend(cv.COMPONENT_SCHEMA)
+    .extend(spi.spi_device_schema(True, 8e6, "mode0"))
+    .add_extra(validate_config)
+)
+
+
+async def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    await cg.register_component(var, config)
+    await spi.register_spi_device(var, config)
+    if CONF_ON_PACKET in config:
+        await automation.build_automation(
+            var.get_packet_trigger(),
+            [
+                (cg.std_vector.template(cg.uint8), "x"),
+                (cg.float_, "rssi"),
+                (cg.float_, "snr"),
+            ],
+            config[CONF_ON_PACKET],
+        )
+    if CONF_DIO1_PIN in config:
+        dio1_pin = await cg.gpio_pin_expression(config[CONF_DIO1_PIN])
+        cg.add(var.set_dio1_pin(dio1_pin))
+    rst_pin = await cg.gpio_pin_expression(config[CONF_RST_PIN])
+    cg.add(var.set_rst_pin(rst_pin))
+    busy_pin = await cg.gpio_pin_expression(config[CONF_BUSY_PIN])
+    cg.add(var.set_busy_pin(busy_pin))
+    cg.add(var.set_bandwidth(config[CONF_BANDWIDTH]))
+    cg.add(var.set_frequency(config[CONF_FREQUENCY]))
+    cg.add(var.set_hw_version(config[CONF_HW_VERSION]))
+    cg.add(var.set_deviation(config[CONF_DEVIATION]))
+    cg.add(var.set_modulation(config[CONF_MODULATION]))
+    cg.add(var.set_pa_ramp(config[CONF_PA_RAMP]))
+    cg.add(var.set_pa_power(config[CONF_PA_POWER]))
+    cg.add(var.set_shaping(config[CONF_SHAPING]))
+    cg.add(var.set_bitrate(config[CONF_BITRATE]))
+    cg.add(var.set_crc_enable(config[CONF_CRC_ENABLE]))
+    cg.add(var.set_payload_length(config[CONF_PAYLOAD_LENGTH]))
+    cg.add(var.set_preamble_size(config[CONF_PREAMBLE_SIZE]))
+    cg.add(var.set_preamble_detect(config[CONF_PREAMBLE_DETECT]))
+    cg.add(var.set_coding_rate(config[CONF_CODING_RATE]))
+    cg.add(var.set_spreading_factor(config[CONF_SPREADING_FACTOR]))
+    cg.add(var.set_sync_value(config[CONF_SYNC_VALUE]))
+    cg.add(var.set_rx_start(config[CONF_RX_START]))
+    cg.add(var.set_rf_switch(config[CONF_RF_SWITCH]))
+    cg.add(var.set_tcxo_voltage(config[CONF_TCXO_VOLTAGE]))
+    cg.add(var.set_tcxo_delay(config[CONF_TCXO_DELAY]))
+
+
+NO_ARGS_ACTION_SCHEMA = automation.maybe_simple_id(
+    {
+        cv.GenerateID(): cv.use_id(SX126x),
+    }
+)
+
+
+@automation.register_action(
+    "sx126x.run_image_cal", RunImageCalAction, NO_ARGS_ACTION_SCHEMA
+)
+@automation.register_action(
+    "sx126x.set_mode_tx", SetModeTxAction, NO_ARGS_ACTION_SCHEMA
+)
+@automation.register_action(
+    "sx126x.set_mode_rx", SetModeRxAction, NO_ARGS_ACTION_SCHEMA
+)
+@automation.register_action(
+    "sx126x.set_mode_sleep", SetModeSleepAction, NO_ARGS_ACTION_SCHEMA
+)
+@automation.register_action(
+    "sx126x.set_mode_standby", SetModeStandbyAction, NO_ARGS_ACTION_SCHEMA
+)
+async def no_args_action_to_code(config, action_id, template_arg, args):
+    var = cg.new_Pvariable(action_id, template_arg)
+    await cg.register_parented(var, config[CONF_ID])
+    return var
+
+
+SEND_PACKET_ACTION_SCHEMA = cv.maybe_simple_value(
+    {
+        cv.GenerateID(): cv.use_id(SX126x),
+        cv.Required(CONF_DATA): cv.templatable(validate_raw_data),
+    },
+    key=CONF_DATA,
+)
+
+
+@automation.register_action(
+    "sx126x.send_packet", SendPacketAction, SEND_PACKET_ACTION_SCHEMA
+)
+async def send_packet_action_to_code(config, action_id, template_arg, args):
+    var = cg.new_Pvariable(action_id, template_arg)
+    await cg.register_parented(var, config[CONF_ID])
+    data = config[CONF_DATA]
+    if isinstance(data, bytes):
+        data = list(data)
+    if cg.is_template(data):
+        templ = await cg.templatable(data, args, cg.std_vector.template(cg.uint8))
+        cg.add(var.set_data_template(templ))
+    else:
+        cg.add(var.set_data_static(data))
+    return var
diff --git a/esphome/components/sx126x/automation.h b/esphome/components/sx126x/automation.h
new file mode 100644
index 0000000000..520ef99718
--- /dev/null
+++ b/esphome/components/sx126x/automation.h
@@ -0,0 +1,62 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/automation.h"
+#include "esphome/components/sx126x/sx126x.h"
+
+namespace esphome {
+namespace sx126x {
+
+template<typename... Ts> class RunImageCalAction : public Action<Ts...>, public Parented<SX126x> {
+ public:
+  void play(Ts... x) override { this->parent_->run_image_cal(); }
+};
+
+template<typename... Ts> class SendPacketAction : public Action<Ts...>, public Parented<SX126x> {
+ public:
+  void set_data_template(std::function<std::vector<uint8_t>(Ts...)> func) {
+    this->data_func_ = func;
+    this->static_ = false;
+  }
+
+  void set_data_static(const std::vector<uint8_t> &data) {
+    this->data_static_ = data;
+    this->static_ = true;
+  }
+
+  void play(Ts... x) override {
+    if (this->static_) {
+      this->parent_->transmit_packet(this->data_static_);
+    } else {
+      this->parent_->transmit_packet(this->data_func_(x...));
+    }
+  }
+
+ protected:
+  bool static_{false};
+  std::function<std::vector<uint8_t>(Ts...)> data_func_{};
+  std::vector<uint8_t> data_static_{};
+};
+
+template<typename... Ts> class SetModeTxAction : public Action<Ts...>, public Parented<SX126x> {
+ public:
+  void play(Ts... x) override { this->parent_->set_mode_tx(); }
+};
+
+template<typename... Ts> class SetModeRxAction : public Action<Ts...>, public Parented<SX126x> {
+ public:
+  void play(Ts... x) override { this->parent_->set_mode_rx(); }
+};
+
+template<typename... Ts> class SetModeSleepAction : public Action<Ts...>, public Parented<SX126x> {
+ public:
+  void play(Ts... x) override { this->parent_->set_mode_sleep(); }
+};
+
+template<typename... Ts> class SetModeStandbyAction : public Action<Ts...>, public Parented<SX126x> {
+ public:
+  void play(Ts... x) override { this->parent_->set_mode_standby(STDBY_XOSC); }
+};
+
+}  // namespace sx126x
+}  // namespace esphome
diff --git a/esphome/components/sx126x/packet_transport/__init__.py b/esphome/components/sx126x/packet_transport/__init__.py
new file mode 100644
index 0000000000..4d79b23ac1
--- /dev/null
+++ b/esphome/components/sx126x/packet_transport/__init__.py
@@ -0,0 +1,26 @@
+import esphome.codegen as cg
+from esphome.components.packet_transport import (
+    PacketTransport,
+    new_packet_transport,
+    transport_schema,
+)
+import esphome.config_validation as cv
+from esphome.cpp_types import PollingComponent
+
+from .. import CONF_SX126X_ID, SX126x, SX126xListener, sx126x_ns
+
+SX126xTransport = sx126x_ns.class_(
+    "SX126xTransport", PacketTransport, PollingComponent, SX126xListener
+)
+
+CONFIG_SCHEMA = transport_schema(SX126xTransport).extend(
+    {
+        cv.GenerateID(CONF_SX126X_ID): cv.use_id(SX126x),
+    }
+)
+
+
+async def to_code(config):
+    var, _ = await new_packet_transport(config)
+    sx126x = await cg.get_variable(config[CONF_SX126X_ID])
+    cg.add(var.set_parent(sx126x))
diff --git a/esphome/components/sx126x/packet_transport/sx126x_transport.cpp b/esphome/components/sx126x/packet_transport/sx126x_transport.cpp
new file mode 100644
index 0000000000..2cfc4b700e
--- /dev/null
+++ b/esphome/components/sx126x/packet_transport/sx126x_transport.cpp
@@ -0,0 +1,26 @@
+#include "esphome/core/log.h"
+#include "esphome/core/application.h"
+#include "sx126x_transport.h"
+
+namespace esphome {
+namespace sx126x {
+
+static const char *const TAG = "sx126x_transport";
+
+void SX126xTransport::setup() {
+  PacketTransport::setup();
+  this->parent_->register_listener(this);
+}
+
+void SX126xTransport::update() {
+  PacketTransport::update();
+  this->updated_ = true;
+  this->resend_data_ = true;
+}
+
+void SX126xTransport::send_packet(const std::vector<uint8_t> &buf) const { this->parent_->transmit_packet(buf); }
+
+void SX126xTransport::on_packet(const std::vector<uint8_t> &packet, float rssi, float snr) { this->process_(packet); }
+
+}  // namespace sx126x
+}  // namespace esphome
diff --git a/esphome/components/sx126x/packet_transport/sx126x_transport.h b/esphome/components/sx126x/packet_transport/sx126x_transport.h
new file mode 100644
index 0000000000..755d30417d
--- /dev/null
+++ b/esphome/components/sx126x/packet_transport/sx126x_transport.h
@@ -0,0 +1,25 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/sx126x/sx126x.h"
+#include "esphome/components/packet_transport/packet_transport.h"
+#include <vector>
+
+namespace esphome {
+namespace sx126x {
+
+class SX126xTransport : public packet_transport::PacketTransport, public Parented<SX126x>, public SX126xListener {
+ public:
+  void setup() override;
+  void update() override;
+  void on_packet(const std::vector<uint8_t> &packet, float rssi, float snr) override;
+  float get_setup_priority() const override { return setup_priority::AFTER_WIFI; }
+
+ protected:
+  void send_packet(const std::vector<uint8_t> &buf) const override;
+  bool should_send() override { return true; }
+  size_t get_max_packet_size() override { return this->parent_->get_max_packet_size(); }
+};
+
+}  // namespace sx126x
+}  // namespace esphome
diff --git a/esphome/components/sx126x/sx126x.cpp b/esphome/components/sx126x/sx126x.cpp
new file mode 100644
index 0000000000..b1c81b324a
--- /dev/null
+++ b/esphome/components/sx126x/sx126x.cpp
@@ -0,0 +1,523 @@
+#include "sx126x.h"
+#include "esphome/core/hal.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace sx126x {
+
+static const char *const TAG = "sx126x";
+static const uint16_t RAMP[8] = {10, 20, 40, 80, 200, 800, 1700, 3400};
+static const uint32_t BW_HZ[31] = {4800,  5800,  7300,  9700,   11700,  14600,  19500,  23400,  29300,  39000,  46900,
+                                   58600, 78200, 93800, 117300, 156200, 187200, 234300, 312000, 373600, 467000, 7810,
+                                   10420, 15630, 20830, 31250,  41670,  62500,  125000, 250000, 500000};
+static const uint8_t BW_LORA[10] = {LORA_BW_7810,  LORA_BW_10420, LORA_BW_15630,  LORA_BW_20830,  LORA_BW_31250,
+                                    LORA_BW_41670, LORA_BW_62500, LORA_BW_125000, LORA_BW_250000, LORA_BW_500000};
+static const uint8_t BW_FSK[21] = {
+    FSK_BW_4800,   FSK_BW_5800,   FSK_BW_7300,   FSK_BW_9700,   FSK_BW_11700,  FSK_BW_14600,  FSK_BW_19500,
+    FSK_BW_23400,  FSK_BW_29300,  FSK_BW_39000,  FSK_BW_46900,  FSK_BW_58600,  FSK_BW_78200,  FSK_BW_93800,
+    FSK_BW_117300, FSK_BW_156200, FSK_BW_187200, FSK_BW_234300, FSK_BW_312000, FSK_BW_373600, FSK_BW_467000};
+
+static constexpr uint32_t RESET_DELAY_HIGH_US = 5000;
+static constexpr uint32_t RESET_DELAY_LOW_US = 2000;
+static constexpr uint32_t SWITCHING_DELAY_US = 1;
+static constexpr uint32_t TRANSMIT_TIMEOUT_MS = 4000;
+static constexpr uint32_t BUSY_TIMEOUT_MS = 20;
+
+// OCP (Over Current Protection) values
+static constexpr uint8_t OCP_80MA = 0x18;   // 80 mA max current
+static constexpr uint8_t OCP_140MA = 0x38;  // 140 mA max current
+
+// LoRa low data rate optimization threshold
+static constexpr float LOW_DATA_RATE_OPTIMIZE_THRESHOLD = 16.38f;  // 16.38 ms
+
+uint8_t SX126x::read_fifo_(uint8_t offset, std::vector<uint8_t> &packet) {
+  this->wait_busy_();
+  this->enable();
+  this->transfer_byte(RADIO_READ_BUFFER);
+  this->transfer_byte(offset);
+  uint8_t status = this->transfer_byte(0x00);
+  for (uint8_t &byte : packet) {
+    byte = this->transfer_byte(0x00);
+  }
+  this->disable();
+  return status;
+}
+
+void SX126x::write_fifo_(uint8_t offset, const std::vector<uint8_t> &packet) {
+  this->wait_busy_();
+  this->enable();
+  this->transfer_byte(RADIO_WRITE_BUFFER);
+  this->transfer_byte(offset);
+  for (const uint8_t &byte : packet) {
+    this->transfer_byte(byte);
+  }
+  this->disable();
+  delayMicroseconds(SWITCHING_DELAY_US);
+}
+
+uint8_t SX126x::read_opcode_(uint8_t opcode, uint8_t *data, uint8_t size) {
+  this->wait_busy_();
+  this->enable();
+  this->transfer_byte(opcode);
+  uint8_t status = this->transfer_byte(0x00);
+  for (int32_t i = 0; i < size; i++) {
+    data[i] = this->transfer_byte(0x00);
+  }
+  this->disable();
+  return status;
+}
+
+void SX126x::write_opcode_(uint8_t opcode, uint8_t *data, uint8_t size) {
+  this->wait_busy_();
+  this->enable();
+  this->transfer_byte(opcode);
+  for (int32_t i = 0; i < size; i++) {
+    this->transfer_byte(data[i]);
+  }
+  this->disable();
+  delayMicroseconds(SWITCHING_DELAY_US);
+}
+
+void SX126x::read_register_(uint16_t reg, uint8_t *data, uint8_t size) {
+  this->wait_busy_();
+  this->enable();
+  this->write_byte(RADIO_READ_REGISTER);
+  this->write_byte((reg >> 8) & 0xFF);
+  this->write_byte((reg >> 0) & 0xFF);
+  this->write_byte(0x00);
+  for (int32_t i = 0; i < size; i++) {
+    data[i] = this->transfer_byte(0x00);
+  }
+  this->disable();
+}
+
+void SX126x::write_register_(uint16_t reg, uint8_t *data, uint8_t size) {
+  this->wait_busy_();
+  this->enable();
+  this->write_byte(RADIO_WRITE_REGISTER);
+  this->write_byte((reg >> 8) & 0xFF);
+  this->write_byte((reg >> 0) & 0xFF);
+  for (int32_t i = 0; i < size; i++) {
+    this->transfer_byte(data[i]);
+  }
+  this->disable();
+  delayMicroseconds(SWITCHING_DELAY_US);
+}
+
+void SX126x::setup() {
+  ESP_LOGCONFIG(TAG, "Running setup");
+
+  // setup pins
+  this->busy_pin_->setup();
+  this->rst_pin_->setup();
+  this->dio1_pin_->setup();
+
+  // start spi
+  this->spi_setup();
+
+  // configure rf
+  this->configure();
+}
+
+void SX126x::configure() {
+  uint8_t buf[8];
+
+  // toggle chip reset
+  this->rst_pin_->digital_write(true);
+  delayMicroseconds(RESET_DELAY_HIGH_US);
+  this->rst_pin_->digital_write(false);
+  delayMicroseconds(RESET_DELAY_LOW_US);
+  this->rst_pin_->digital_write(true);
+  delayMicroseconds(RESET_DELAY_HIGH_US);
+
+  // wakeup
+  this->read_opcode_(RADIO_GET_STATUS, nullptr, 0);
+
+  // config tcxo
+  if (this->tcxo_voltage_ != TCXO_CTRL_NONE) {
+    uint32_t delay = this->tcxo_delay_ >> 6;
+    buf[0] = this->tcxo_voltage_;
+    buf[1] = (delay >> 16) & 0xFF;
+    buf[2] = (delay >> 8) & 0xFF;
+    buf[3] = (delay >> 0) & 0xFF;
+    this->write_opcode_(RADIO_SET_TCXOMODE, buf, 4);
+    buf[0] = 0x7F;
+    this->write_opcode_(RADIO_CALIBRATE, buf, 1);
+  }
+
+  // clear errors
+  buf[0] = 0x00;
+  buf[1] = 0x00;
+  this->write_opcode_(RADIO_CLR_ERROR, buf, 2);
+
+  // rf switch
+  if (this->rf_switch_) {
+    buf[0] = 0x01;
+    this->write_opcode_(RADIO_SET_RFSWITCHMODE, buf, 1);
+  }
+
+  // check silicon version to make sure hw is ok
+  this->read_register_(REG_VERSION_STRING, (uint8_t *) this->version_, 16);
+  if (strncmp(this->version_, "SX126", 5) != 0 && strncmp(this->version_, "LLCC68", 6) != 0) {
+    this->mark_failed();
+    return;
+  }
+
+  // setup packet type
+  buf[0] = this->modulation_;
+  this->write_opcode_(RADIO_SET_PACKETTYPE, buf, 1);
+
+  // calibrate image
+  this->run_image_cal();
+
+  // set frequency
+  uint64_t freq = ((uint64_t) this->frequency_ << 25) / XTAL_FREQ;
+  buf[0] = (uint8_t) ((freq >> 24) & 0xFF);
+  buf[1] = (uint8_t) ((freq >> 16) & 0xFF);
+  buf[2] = (uint8_t) ((freq >> 8) & 0xFF);
+  buf[3] = (uint8_t) (freq & 0xFF);
+  this->write_opcode_(RADIO_SET_RFFREQUENCY, buf, 4);
+
+  // configure pa
+  int8_t pa_power = this->pa_power_;
+  if (this->hw_version_ == "sx1261") {
+    // the following values were taken from section 13.1.14.1 table 13-21
+    // in rev 2.1 of the datasheet
+    if (pa_power == 15) {
+      uint8_t cfg[4] = {0x06, 0x00, 0x01, 0x01};
+      this->write_opcode_(RADIO_SET_PACONFIG, cfg, 4);
+    } else {
+      uint8_t cfg[4] = {0x04, 0x00, 0x01, 0x01};
+      this->write_opcode_(RADIO_SET_PACONFIG, cfg, 4);
+    }
+    pa_power = std::max(pa_power, (int8_t) -3);
+    pa_power = std::min(pa_power, (int8_t) 14);
+    buf[0] = OCP_80MA;
+    this->write_register_(REG_OCP, buf, 1);
+  } else {
+    // the following values were taken from section 13.1.14.1 table 13-21
+    // in rev 2.1 of the datasheet
+    uint8_t cfg[4] = {0x04, 0x07, 0x00, 0x01};
+    this->write_opcode_(RADIO_SET_PACONFIG, cfg, 4);
+    pa_power = std::max(pa_power, (int8_t) -3);
+    pa_power = std::min(pa_power, (int8_t) 22);
+    buf[0] = OCP_140MA;
+    this->write_register_(REG_OCP, buf, 1);
+  }
+  buf[0] = pa_power;
+  buf[1] = this->pa_ramp_;
+  this->write_opcode_(RADIO_SET_TXPARAMS, buf, 2);
+
+  // configure modem
+  if (this->modulation_ == PACKET_TYPE_LORA) {
+    // set modulation params
+    float duration = 1000.0f * std::pow(2, this->spreading_factor_) / BW_HZ[this->bandwidth_];
+    buf[0] = this->spreading_factor_;
+    buf[1] = BW_LORA[this->bandwidth_ - SX126X_BW_7810];
+    buf[2] = this->coding_rate_;
+    buf[3] = (duration > LOW_DATA_RATE_OPTIMIZE_THRESHOLD) ? 0x01 : 0x00;
+    this->write_opcode_(RADIO_SET_MODULATIONPARAMS, buf, 4);
+
+    // set packet params and sync word
+    this->set_packet_params_(this->payload_length_);
+    if (this->sync_value_.size() == 2) {
+      this->write_register_(REG_LORA_SYNCWORD, this->sync_value_.data(), this->sync_value_.size());
+    }
+  } else {
+    // set modulation params
+    uint32_t bitrate = ((uint64_t) XTAL_FREQ * 32) / this->bitrate_;
+    uint32_t fdev = ((uint64_t) this->deviation_ << 25) / XTAL_FREQ;
+    buf[0] = (bitrate >> 16) & 0xFF;
+    buf[1] = (bitrate >> 8) & 0xFF;
+    buf[2] = (bitrate >> 0) & 0xFF;
+    buf[3] = this->shaping_;
+    buf[4] = BW_FSK[this->bandwidth_ - SX126X_BW_4800];
+    buf[5] = (fdev >> 16) & 0xFF;
+    buf[6] = (fdev >> 8) & 0xFF;
+    buf[7] = (fdev >> 0) & 0xFF;
+    this->write_opcode_(RADIO_SET_MODULATIONPARAMS, buf, 8);
+
+    // set packet params and sync word
+    this->set_packet_params_(this->payload_length_);
+    if (!this->sync_value_.empty()) {
+      this->write_register_(REG_GFSK_SYNCWORD, this->sync_value_.data(), this->sync_value_.size());
+    }
+  }
+
+  // switch to rx or sleep
+  if (this->rx_start_) {
+    this->set_mode_rx();
+  } else {
+    this->set_mode_sleep();
+  }
+}
+
+size_t SX126x::get_max_packet_size() {
+  if (this->payload_length_ > 0) {
+    return this->payload_length_;
+  }
+  return 255;
+}
+
+void SX126x::set_packet_params_(uint8_t payload_length) {
+  uint8_t buf[9];
+  if (this->modulation_ == PACKET_TYPE_LORA) {
+    buf[0] = (this->preamble_size_ >> 8) & 0xFF;
+    buf[1] = (this->preamble_size_ >> 0) & 0xFF;
+    buf[2] = (this->payload_length_ > 0) ? 0x01 : 0x00;
+    buf[3] = payload_length;
+    buf[4] = (this->crc_enable_) ? 0x01 : 0x00;
+    buf[5] = 0x00;
+    this->write_opcode_(RADIO_SET_PACKETPARAMS, buf, 6);
+  } else {
+    uint16_t preamble_size = this->preamble_size_ * 8;
+    buf[0] = (preamble_size >> 8) & 0xFF;
+    buf[1] = (preamble_size >> 0) & 0xFF;
+    buf[2] = (this->preamble_detect_ > 0) ? ((this->preamble_detect_ - 1) | 0x04) : 0x00;
+    buf[3] = this->sync_value_.size() * 8;
+    buf[4] = 0x00;
+    buf[5] = 0x00;
+    buf[6] = payload_length;
+    buf[7] = this->crc_enable_ ? 0x06 : 0x01;
+    buf[8] = 0x00;
+    this->write_opcode_(RADIO_SET_PACKETPARAMS, buf, 9);
+  }
+}
+
+SX126xError SX126x::transmit_packet(const std::vector<uint8_t> &packet) {
+  if (this->payload_length_ > 0 && this->payload_length_ != packet.size()) {
+    ESP_LOGE(TAG, "Packet size does not match config");
+    return SX126xError::INVALID_PARAMS;
+  }
+  if (packet.empty() || packet.size() > this->get_max_packet_size()) {
+    ESP_LOGE(TAG, "Packet size out of range");
+    return SX126xError::INVALID_PARAMS;
+  }
+
+  SX126xError ret = SX126xError::NONE;
+  this->set_mode_standby(STDBY_XOSC);
+  if (this->payload_length_ == 0) {
+    this->set_packet_params_(packet.size());
+  }
+  this->write_fifo_(0x00, packet);
+  this->set_mode_tx();
+
+  // wait until transmit completes, typically the delay will be less than 100 ms
+  uint32_t start = millis();
+  while (!this->dio1_pin_->digital_read()) {
+    if (millis() - start > TRANSMIT_TIMEOUT_MS) {
+      ESP_LOGE(TAG, "Transmit packet failure");
+      ret = SX126xError::TIMEOUT;
+      break;
+    }
+  }
+
+  uint8_t buf[2];
+  buf[0] = 0xFF;
+  buf[1] = 0xFF;
+  this->write_opcode_(RADIO_CLR_IRQSTATUS, buf, 2);
+  if (this->rx_start_) {
+    this->set_mode_rx();
+  } else {
+    this->set_mode_sleep();
+  }
+  return ret;
+}
+
+void SX126x::call_listeners_(const std::vector<uint8_t> &packet, float rssi, float snr) {
+  for (auto &listener : this->listeners_) {
+    listener->on_packet(packet, rssi, snr);
+  }
+  this->packet_trigger_->trigger(packet, rssi, snr);
+}
+
+void SX126x::loop() {
+  if (!this->dio1_pin_->digital_read()) {
+    return;
+  }
+
+  uint16_t status;
+  uint8_t buf[3];
+  uint8_t rssi;
+  int8_t snr;
+  this->read_opcode_(RADIO_GET_IRQSTATUS, buf, 2);
+  this->write_opcode_(RADIO_CLR_IRQSTATUS, buf, 2);
+  status = (buf[0] << 8) | buf[1];
+  if ((status & IRQ_RX_DONE) == IRQ_RX_DONE) {
+    if ((status & IRQ_CRC_ERROR) != IRQ_CRC_ERROR) {
+      this->read_opcode_(RADIO_GET_PACKETSTATUS, buf, 3);
+      if (this->modulation_ == PACKET_TYPE_LORA) {
+        rssi = buf[0];
+        snr = buf[1];
+      } else {
+        rssi = buf[2];
+        snr = 0;
+      }
+      this->read_opcode_(RADIO_GET_RXBUFFERSTATUS, buf, 2);
+      this->packet_.resize(buf[0]);
+      this->read_fifo_(buf[1], this->packet_);
+      this->call_listeners_(this->packet_, (float) rssi / -2.0f, (float) snr / 4.0f);
+    }
+  }
+}
+
+void SX126x::run_image_cal() {
+  // the following values were taken from section 9.2.1 table 9-2
+  // in rev 2.1 of the datasheet
+  uint8_t buf[2] = {0, 0};
+  if (this->frequency_ > 900000000) {
+    buf[0] = 0xE1;
+    buf[1] = 0xE9;
+  } else if (this->frequency_ > 850000000) {
+    buf[0] = 0xD7;
+    buf[1] = 0xD8;
+  } else if (this->frequency_ > 770000000) {
+    buf[0] = 0xC1;
+    buf[1] = 0xC5;
+  } else if (this->frequency_ > 460000000) {
+    buf[0] = 0x75;
+    buf[1] = 0x81;
+  } else if (this->frequency_ > 425000000) {
+    buf[0] = 0x6B;
+    buf[1] = 0x6F;
+  }
+  if (buf[0] > 0 && buf[1] > 0) {
+    this->write_opcode_(RADIO_CALIBRATEIMAGE, buf, 2);
+  }
+}
+
+void SX126x::set_mode_rx() {
+  uint8_t buf[8];
+
+  // configure irq params
+  uint16_t irq = IRQ_RX_DONE | IRQ_RX_TX_TIMEOUT | IRQ_CRC_ERROR;
+  buf[0] = (irq >> 8) & 0xFF;
+  buf[1] = (irq >> 0) & 0xFF;
+  buf[2] = (irq >> 8) & 0xFF;
+  buf[3] = (irq >> 0) & 0xFF;
+  buf[4] = (IRQ_RADIO_NONE >> 8) & 0xFF;
+  buf[5] = (IRQ_RADIO_NONE >> 0) & 0xFF;
+  buf[6] = (IRQ_RADIO_NONE >> 8) & 0xFF;
+  buf[7] = (IRQ_RADIO_NONE >> 0) & 0xFF;
+  this->write_opcode_(RADIO_SET_DIOIRQPARAMS, buf, 8);
+
+  // set timeout to 0
+  buf[0] = 0x00;
+  this->write_opcode_(RADIO_SET_LORASYMBTIMEOUT, buf, 1);
+
+  // switch to continuous mode rx
+  buf[0] = 0xFF;
+  buf[1] = 0xFF;
+  buf[2] = 0xFF;
+  this->write_opcode_(RADIO_SET_RX, buf, 3);
+}
+
+void SX126x::set_mode_tx() {
+  uint8_t buf[8];
+
+  // configure irq params
+  uint16_t irq = IRQ_TX_DONE | IRQ_RX_TX_TIMEOUT;
+  buf[0] = (irq >> 8) & 0xFF;
+  buf[1] = (irq >> 0) & 0xFF;
+  buf[2] = (irq >> 8) & 0xFF;
+  buf[3] = (irq >> 0) & 0xFF;
+  buf[4] = (IRQ_RADIO_NONE >> 8) & 0xFF;
+  buf[5] = (IRQ_RADIO_NONE >> 0) & 0xFF;
+  buf[6] = (IRQ_RADIO_NONE >> 8) & 0xFF;
+  buf[7] = (IRQ_RADIO_NONE >> 0) & 0xFF;
+  this->write_opcode_(RADIO_SET_DIOIRQPARAMS, buf, 8);
+
+  // switch to single mode tx
+  buf[0] = 0x00;
+  buf[1] = 0x00;
+  buf[2] = 0x00;
+  this->write_opcode_(RADIO_SET_TX, buf, 3);
+}
+
+void SX126x::set_mode_sleep() {
+  uint8_t buf[1];
+  buf[0] = 0x05;
+  this->write_opcode_(RADIO_SET_SLEEP, buf, 1);
+}
+
+void SX126x::set_mode_standby(SX126xStandbyMode mode) {
+  uint8_t buf[1];
+  buf[0] = mode;
+  this->write_opcode_(RADIO_SET_STANDBY, buf, 1);
+}
+
+void SX126x::wait_busy_() {
+  // wait if the device is busy, the maximum delay is only be a few ms
+  // with most commands taking only a few us
+  uint32_t start = millis();
+  while (this->busy_pin_->digital_read()) {
+    if (millis() - start > BUSY_TIMEOUT_MS) {
+      ESP_LOGE(TAG, "Wait busy timeout");
+      this->mark_failed();
+      break;
+    }
+  }
+}
+
+void SX126x::dump_config() {
+  ESP_LOGCONFIG(TAG, "SX126x:");
+  LOG_PIN("  CS Pin: ", this->cs_);
+  LOG_PIN("  BUSY Pin: ", this->busy_pin_);
+  LOG_PIN("  RST Pin: ", this->rst_pin_);
+  LOG_PIN("  DIO1 Pin: ", this->dio1_pin_);
+  ESP_LOGCONFIG(TAG,
+                "  HW Version: %15s\n"
+                "  Frequency: %" PRIu32 " Hz\n"
+                "  Bandwidth: %" PRIu32 " Hz\n"
+                "  PA Power: %" PRId8 " dBm\n"
+                "  PA Ramp: %" PRIu16 " us\n"
+                "  Payload Length: %" PRIu32 "\n"
+                "  CRC Enable: %s\n"
+                "  Rx Start: %s",
+                this->version_, this->frequency_, BW_HZ[this->bandwidth_], this->pa_power_, RAMP[this->pa_ramp_],
+                this->payload_length_, TRUEFALSE(this->crc_enable_), TRUEFALSE(this->rx_start_));
+  if (this->modulation_ == PACKET_TYPE_GFSK) {
+    const char *shaping = "NONE";
+    if (this->shaping_ == GAUSSIAN_BT_0_3) {
+      shaping = "GAUSSIAN_BT_0_3";
+    } else if (this->shaping_ == GAUSSIAN_BT_0_5) {
+      shaping = "GAUSSIAN_BT_0_5";
+    } else if (this->shaping_ == GAUSSIAN_BT_0_7) {
+      shaping = "GAUSSIAN_BT_0_7";
+    } else if (this->shaping_ == GAUSSIAN_BT_1_0) {
+      shaping = "GAUSSIAN_BT_1_0";
+    }
+    ESP_LOGCONFIG(TAG,
+                  "  Modulation: FSK\n"
+                  "  Deviation: %" PRIu32 " Hz\n"
+                  "  Shaping: %s\n"
+                  "  Preamble Size: %" PRIu16 "\n"
+                  "  Preamble Detect: %" PRIu16 "\n"
+                  "  Bitrate: %" PRIu32 "b/s",
+                  this->deviation_, shaping, this->preamble_size_, this->preamble_detect_, this->bitrate_);
+  } else if (this->modulation_ == PACKET_TYPE_LORA) {
+    const char *cr = "4/8";
+    if (this->coding_rate_ == LORA_CR_4_5) {
+      cr = "4/5";
+    } else if (this->coding_rate_ == LORA_CR_4_6) {
+      cr = "4/6";
+    } else if (this->coding_rate_ == LORA_CR_4_7) {
+      cr = "4/7";
+    }
+    ESP_LOGCONFIG(TAG,
+                  "  Modulation: LORA\n"
+                  "  Spreading Factor: %" PRIu8 "\n"
+                  "  Coding Rate: %s\n"
+                  "  Preamble Size: %" PRIu16,
+                  this->spreading_factor_, cr, this->preamble_size_);
+  }
+  if (!this->sync_value_.empty()) {
+    ESP_LOGCONFIG(TAG, "  Sync Value: 0x%s", format_hex(this->sync_value_).c_str());
+  }
+  if (this->is_failed()) {
+    ESP_LOGE(TAG, "Configuring SX126x failed");
+  }
+}
+
+}  // namespace sx126x
+}  // namespace esphome
diff --git a/esphome/components/sx126x/sx126x.h b/esphome/components/sx126x/sx126x.h
new file mode 100644
index 0000000000..fd5c37942d
--- /dev/null
+++ b/esphome/components/sx126x/sx126x.h
@@ -0,0 +1,140 @@
+#pragma once
+
+#include "esphome/components/spi/spi.h"
+#include "esphome/core/automation.h"
+#include "esphome/core/component.h"
+#include "sx126x_reg.h"
+#include <utility>
+#include <vector>
+
+namespace esphome {
+namespace sx126x {
+
+enum SX126xBw : uint8_t {
+  // FSK
+  SX126X_BW_4800,
+  SX126X_BW_5800,
+  SX126X_BW_7300,
+  SX126X_BW_9700,
+  SX126X_BW_11700,
+  SX126X_BW_14600,
+  SX126X_BW_19500,
+  SX126X_BW_23400,
+  SX126X_BW_29300,
+  SX126X_BW_39000,
+  SX126X_BW_46900,
+  SX126X_BW_58600,
+  SX126X_BW_78200,
+  SX126X_BW_93800,
+  SX126X_BW_117300,
+  SX126X_BW_156200,
+  SX126X_BW_187200,
+  SX126X_BW_234300,
+  SX126X_BW_312000,
+  SX126X_BW_373600,
+  SX126X_BW_467000,
+  // LORA
+  SX126X_BW_7810,
+  SX126X_BW_10420,
+  SX126X_BW_15630,
+  SX126X_BW_20830,
+  SX126X_BW_31250,
+  SX126X_BW_41670,
+  SX126X_BW_62500,
+  SX126X_BW_125000,
+  SX126X_BW_250000,
+  SX126X_BW_500000,
+};
+
+enum class SX126xError { NONE = 0, TIMEOUT, INVALID_PARAMS };
+
+class SX126xListener {
+ public:
+  virtual void on_packet(const std::vector<uint8_t> &packet, float rssi, float snr) = 0;
+};
+
+class SX126x : public Component,
+               public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW, spi::CLOCK_PHASE_LEADING,
+                                     spi::DATA_RATE_8MHZ> {
+ public:
+  size_t get_max_packet_size();
+  float get_setup_priority() const override { return setup_priority::PROCESSOR; }
+  void setup() override;
+  void loop() override;
+  void dump_config() override;
+  void set_bandwidth(SX126xBw bandwidth) { this->bandwidth_ = bandwidth; }
+  void set_bitrate(uint32_t bitrate) { this->bitrate_ = bitrate; }
+  void set_busy_pin(InternalGPIOPin *busy_pin) { this->busy_pin_ = busy_pin; }
+  void set_coding_rate(uint8_t coding_rate) { this->coding_rate_ = coding_rate; }
+  void set_crc_enable(bool crc_enable) { this->crc_enable_ = crc_enable; }
+  void set_deviation(uint32_t deviation) { this->deviation_ = deviation; }
+  void set_dio1_pin(InternalGPIOPin *dio1_pin) { this->dio1_pin_ = dio1_pin; }
+  void set_frequency(uint32_t frequency) { this->frequency_ = frequency; }
+  void set_hw_version(const std::string &hw_version) { this->hw_version_ = hw_version; }
+  void set_mode_rx();
+  void set_mode_tx();
+  void set_mode_standby(SX126xStandbyMode mode);
+  void set_mode_sleep();
+  void set_modulation(uint8_t modulation) { this->modulation_ = modulation; }
+  void set_pa_power(int8_t power) { this->pa_power_ = power; }
+  void set_pa_ramp(uint8_t ramp) { this->pa_ramp_ = ramp; }
+  void set_payload_length(uint8_t payload_length) { this->payload_length_ = payload_length; }
+  void set_preamble_detect(uint16_t preamble_detect) { this->preamble_detect_ = preamble_detect; }
+  void set_preamble_size(uint16_t preamble_size) { this->preamble_size_ = preamble_size; }
+  void set_rst_pin(InternalGPIOPin *rst_pin) { this->rst_pin_ = rst_pin; }
+  void set_rx_start(bool rx_start) { this->rx_start_ = rx_start; }
+  void set_rf_switch(bool rf_switch) { this->rf_switch_ = rf_switch; }
+  void set_shaping(uint8_t shaping) { this->shaping_ = shaping; }
+  void set_spreading_factor(uint8_t spreading_factor) { this->spreading_factor_ = spreading_factor; }
+  void set_sync_value(const std::vector<uint8_t> &sync_value) { this->sync_value_ = sync_value; }
+  void set_tcxo_voltage(uint8_t tcxo_voltage) { this->tcxo_voltage_ = tcxo_voltage; }
+  void set_tcxo_delay(uint32_t tcxo_delay) { this->tcxo_delay_ = tcxo_delay; }
+  void run_image_cal();
+  void configure();
+  SX126xError transmit_packet(const std::vector<uint8_t> &packet);
+  void register_listener(SX126xListener *listener) { this->listeners_.push_back(listener); }
+  Trigger<std::vector<uint8_t>, float, float> *get_packet_trigger() const { return this->packet_trigger_; };
+
+ protected:
+  void configure_fsk_ook_();
+  void configure_lora_();
+  void set_packet_params_(uint8_t payload_length);
+  uint8_t read_fifo_(uint8_t offset, std::vector<uint8_t> &packet);
+  void write_fifo_(uint8_t offset, const std::vector<uint8_t> &packet);
+  void write_opcode_(uint8_t opcode, uint8_t *data, uint8_t size);
+  uint8_t read_opcode_(uint8_t opcode, uint8_t *data, uint8_t size);
+  void write_register_(uint16_t reg, uint8_t *data, uint8_t size);
+  void read_register_(uint16_t reg, uint8_t *data, uint8_t size);
+  void call_listeners_(const std::vector<uint8_t> &packet, float rssi, float snr);
+  void wait_busy_();
+  Trigger<std::vector<uint8_t>, float, float> *packet_trigger_{new Trigger<std::vector<uint8_t>, float, float>()};
+  std::vector<SX126xListener *> listeners_;
+  std::vector<uint8_t> packet_;
+  std::vector<uint8_t> sync_value_;
+  InternalGPIOPin *busy_pin_{nullptr};
+  InternalGPIOPin *dio1_pin_{nullptr};
+  InternalGPIOPin *rst_pin_{nullptr};
+  std::string hw_version_;
+  char version_[16];
+  SX126xBw bandwidth_{SX126X_BW_125000};
+  uint32_t bitrate_{0};
+  uint32_t deviation_{0};
+  uint32_t frequency_{0};
+  uint32_t payload_length_{0};
+  uint32_t tcxo_delay_{0};
+  uint16_t preamble_detect_{0};
+  uint16_t preamble_size_{0};
+  uint8_t tcxo_voltage_{0};
+  uint8_t coding_rate_{0};
+  uint8_t modulation_{PACKET_TYPE_LORA};
+  uint8_t pa_ramp_{0};
+  uint8_t shaping_{0};
+  uint8_t spreading_factor_{0};
+  int8_t pa_power_{0};
+  bool crc_enable_{false};
+  bool rx_start_{false};
+  bool rf_switch_{false};
+};
+
+}  // namespace sx126x
+}  // namespace esphome
diff --git a/esphome/components/sx126x/sx126x_reg.h b/esphome/components/sx126x/sx126x_reg.h
new file mode 100644
index 0000000000..3b12d822b5
--- /dev/null
+++ b/esphome/components/sx126x/sx126x_reg.h
@@ -0,0 +1,163 @@
+#pragma once
+
+#include "esphome/core/hal.h"
+
+namespace esphome {
+namespace sx126x {
+
+static const uint32_t XTAL_FREQ = 32000000;
+
+enum SX126xOpCode : uint8_t {
+  RADIO_GET_STATUS = 0xC0,
+  RADIO_WRITE_REGISTER = 0x0D,
+  RADIO_READ_REGISTER = 0x1D,
+  RADIO_WRITE_BUFFER = 0x0E,
+  RADIO_READ_BUFFER = 0x1E,
+  RADIO_SET_SLEEP = 0x84,
+  RADIO_SET_STANDBY = 0x80,
+  RADIO_SET_FS = 0xC1,
+  RADIO_SET_TX = 0x83,
+  RADIO_SET_RX = 0x82,
+  RADIO_SET_RXDUTYCYCLE = 0x94,
+  RADIO_SET_CAD = 0xC5,
+  RADIO_SET_TXCONTINUOUSWAVE = 0xD1,
+  RADIO_SET_TXCONTINUOUSPREAMBLE = 0xD2,
+  RADIO_SET_PACKETTYPE = 0x8A,
+  RADIO_GET_PACKETTYPE = 0x11,
+  RADIO_SET_RFFREQUENCY = 0x86,
+  RADIO_SET_TXPARAMS = 0x8E,
+  RADIO_SET_PACONFIG = 0x95,
+  RADIO_SET_CADPARAMS = 0x88,
+  RADIO_SET_BUFFERBASEADDRESS = 0x8F,
+  RADIO_SET_MODULATIONPARAMS = 0x8B,
+  RADIO_SET_PACKETPARAMS = 0x8C,
+  RADIO_GET_RXBUFFERSTATUS = 0x13,
+  RADIO_GET_PACKETSTATUS = 0x14,
+  RADIO_GET_RSSIINST = 0x15,
+  RADIO_GET_STATS = 0x10,
+  RADIO_RESET_STATS = 0x00,
+  RADIO_SET_DIOIRQPARAMS = 0x08,
+  RADIO_GET_IRQSTATUS = 0x12,
+  RADIO_CLR_IRQSTATUS = 0x02,
+  RADIO_CALIBRATE = 0x89,
+  RADIO_CALIBRATEIMAGE = 0x98,
+  RADIO_SET_REGULATORMODE = 0x96,
+  RADIO_GET_ERROR = 0x17,
+  RADIO_CLR_ERROR = 0x07,
+  RADIO_SET_TCXOMODE = 0x97,
+  RADIO_SET_TXFALLBACKMODE = 0x93,
+  RADIO_SET_RFSWITCHMODE = 0x9D,
+  RADIO_SET_STOPRXTIMERONPREAMBLE = 0x9F,
+  RADIO_SET_LORASYMBTIMEOUT = 0xA0,
+};
+
+enum SX126xRegister : uint16_t {
+  REG_VERSION_STRING = 0x0320,
+  REG_GFSK_SYNCWORD = 0x06C0,
+  REG_LORA_SYNCWORD = 0x0740,
+  REG_OCP = 0x08E7,
+};
+
+enum SX126xStandbyMode : uint8_t {
+  STDBY_RC = 0x00,
+  STDBY_XOSC = 0x01,
+};
+
+enum SX126xPacketType : uint8_t {
+  PACKET_TYPE_GFSK = 0x00,
+  PACKET_TYPE_LORA = 0x01,
+  PACKET_TYPE_LRHSS = 0x03,
+};
+
+enum SX126xFskBw : uint8_t {
+  FSK_BW_4800 = 0x1F,
+  FSK_BW_5800 = 0x17,
+  FSK_BW_7300 = 0x0F,
+  FSK_BW_9700 = 0x1E,
+  FSK_BW_11700 = 0x16,
+  FSK_BW_14600 = 0x0E,
+  FSK_BW_19500 = 0x1D,
+  FSK_BW_23400 = 0x15,
+  FSK_BW_29300 = 0x0D,
+  FSK_BW_39000 = 0x1C,
+  FSK_BW_46900 = 0x14,
+  FSK_BW_58600 = 0x0C,
+  FSK_BW_78200 = 0x1B,
+  FSK_BW_93800 = 0x13,
+  FSK_BW_117300 = 0x0B,
+  FSK_BW_156200 = 0x1A,
+  FSK_BW_187200 = 0x12,
+  FSK_BW_234300 = 0x0A,
+  FSK_BW_312000 = 0x19,
+  FSK_BW_373600 = 0x11,
+  FSK_BW_467000 = 0x09,
+};
+
+enum SX126xLoraBw : uint8_t {
+  LORA_BW_7810 = 0x00,
+  LORA_BW_10420 = 0x08,
+  LORA_BW_15630 = 0x01,
+  LORA_BW_20830 = 0x09,
+  LORA_BW_31250 = 0x02,
+  LORA_BW_41670 = 0x0A,
+  LORA_BW_62500 = 0x03,
+  LORA_BW_125000 = 0x04,
+  LORA_BW_250000 = 0x05,
+  LORA_BW_500000 = 0x06,
+};
+
+enum SX126xLoraCr : uint8_t {
+  LORA_CR_4_5 = 0x01,
+  LORA_CR_4_6 = 0x02,
+  LORA_CR_4_7 = 0x03,
+  LORA_CR_4_8 = 0x04,
+};
+
+enum SX126xIrqMasks : uint16_t {
+  IRQ_RADIO_NONE = 0x0000,
+  IRQ_TX_DONE = 0x0001,
+  IRQ_RX_DONE = 0x0002,
+  IRQ_PREAMBLE_DETECTED = 0x0004,
+  IRQ_SYNCWORD_VALID = 0x0008,
+  IRQ_HEADER_VALID = 0x0010,
+  IRQ_HEADER_ERROR = 0x0020,
+  IRQ_CRC_ERROR = 0x0040,
+  IRQ_CAD_DONE = 0x0080,
+  IRQ_CAD_ACTIVITY_DETECTED = 0x0100,
+  IRQ_RX_TX_TIMEOUT = 0x0200,
+  IRQ_RADIO_ALL = 0xFFFF,
+};
+
+enum SX126xTcxoCtrl : uint8_t {
+  TCXO_CTRL_1_6V = 0x00,
+  TCXO_CTRL_1_7V = 0x01,
+  TCXO_CTRL_1_8V = 0x02,
+  TCXO_CTRL_2_2V = 0x03,
+  TCXO_CTRL_2_4V = 0x04,
+  TCXO_CTRL_2_7V = 0x05,
+  TCXO_CTRL_3_0V = 0x06,
+  TCXO_CTRL_3_3V = 0x07,
+  TCXO_CTRL_NONE = 0xFF,
+};
+
+enum SX126xPulseShape : uint8_t {
+  NO_FILTER = 0x00,
+  GAUSSIAN_BT_0_3 = 0x08,
+  GAUSSIAN_BT_0_5 = 0x09,
+  GAUSSIAN_BT_0_7 = 0x0A,
+  GAUSSIAN_BT_1_0 = 0x0B,
+};
+
+enum SX126xRampTime : uint8_t {
+  PA_RAMP_10 = 0x00,
+  PA_RAMP_20 = 0x01,
+  PA_RAMP_40 = 0x02,
+  PA_RAMP_80 = 0x03,
+  PA_RAMP_200 = 0x04,
+  PA_RAMP_800 = 0x05,
+  PA_RAMP_1700 = 0x06,
+  PA_RAMP_3400 = 0x07,
+};
+
+}  // namespace sx126x
+}  // namespace esphome
diff --git a/esphome/core/helpers.cpp b/esphome/core/helpers.cpp
index 7d9b86fccd..72722169d4 100644
--- a/esphome/core/helpers.cpp
+++ b/esphome/core/helpers.cpp
@@ -12,47 +12,10 @@
 #include <cstdio>
 #include <cstring>
 
-#ifdef USE_HOST
-#ifndef _WIN32
-#include <net/if.h>
-#include <netinet/in.h>
-#include <sys/ioctl.h>
-#endif
-#include <unistd.h>
-#endif
-#if defined(USE_ESP8266)
-#include <osapi.h>
-#include <user_interface.h>
-// for xt_rsil()/xt_wsr_ps()
-#include <Arduino.h>
-#elif defined(USE_ESP32_FRAMEWORK_ARDUINO)
-#include <Esp.h>
-#elif defined(USE_ESP_IDF)
-#include <freertos/FreeRTOS.h>
-#include <freertos/portmacro.h>
-#include "esp_random.h"
-#include "esp_system.h"
-#elif defined(USE_RP2040)
-#if defined(USE_WIFI)
-#include <WiFi.h>
-#endif
-#include <hardware/structs/rosc.h>
-#include <hardware/sync.h>
-#elif defined(USE_HOST)
-#include <limits>
-#include <random>
-#endif
 #ifdef USE_ESP32
-#include "esp_efuse.h"
-#include "esp_efuse_table.h"
-#include "esp_mac.h"
 #include "rom/crc.h"
 #endif
 
-#ifdef USE_LIBRETINY
-#include <WiFi.h>  // for macAddress()
-#endif
-
 namespace esphome {
 
 static const char *const TAG = "helpers";
@@ -177,70 +140,7 @@ uint32_t fnv1_hash(const std::string &str) {
   return hash;
 }
 
-#ifdef USE_ESP32
-uint32_t random_uint32() { return esp_random(); }
-#elif defined(USE_ESP8266)
-uint32_t random_uint32() { return os_random(); }
-#elif defined(USE_RP2040)
-uint32_t random_uint32() {
-  uint32_t result = 0;
-  for (uint8_t i = 0; i < 32; i++) {
-    result <<= 1;
-    result |= rosc_hw->randombit;
-  }
-  return result;
-}
-#elif defined(USE_LIBRETINY)
-uint32_t random_uint32() { return rand(); }
-#elif defined(USE_HOST)
-uint32_t random_uint32() {
-  std::random_device dev;
-  std::mt19937 rng(dev());
-  std::uniform_int_distribution<uint32_t> dist(0, std::numeric_limits<uint32_t>::max());
-  return dist(rng);
-}
-#endif
 float random_float() { return static_cast<float>(random_uint32()) / static_cast<float>(UINT32_MAX); }
-#ifdef USE_ESP32
-bool random_bytes(uint8_t *data, size_t len) {
-  esp_fill_random(data, len);
-  return true;
-}
-#elif defined(USE_ESP8266)
-bool random_bytes(uint8_t *data, size_t len) { return os_get_random(data, len) == 0; }
-#elif defined(USE_RP2040)
-bool random_bytes(uint8_t *data, size_t len) {
-  while (len-- != 0) {
-    uint8_t result = 0;
-    for (uint8_t i = 0; i < 8; i++) {
-      result <<= 1;
-      result |= rosc_hw->randombit;
-    }
-    *data++ = result;
-  }
-  return true;
-}
-#elif defined(USE_LIBRETINY)
-bool random_bytes(uint8_t *data, size_t len) {
-  lt_rand_bytes(data, len);
-  return true;
-}
-#elif defined(USE_HOST)
-bool random_bytes(uint8_t *data, size_t len) {
-  FILE *fp = fopen("/dev/urandom", "r");
-  if (fp == nullptr) {
-    ESP_LOGW(TAG, "Could not open /dev/urandom, errno=%d", errno);
-    exit(1);
-  }
-  size_t read = fread(data, 1, len, fp);
-  if (read != len) {
-    ESP_LOGW(TAG, "Not enough data from /dev/urandom");
-    exit(1);
-  }
-  fclose(fp);
-  return true;
-}
-#endif
 
 // Strings
 
@@ -644,42 +544,6 @@ void hsv_to_rgb(int hue, float saturation, float value, float &red, float &green
   blue += delta;
 }
 
-// System APIs
-#if defined(USE_ESP8266) || defined(USE_RP2040)
-// ESP8266 doesn't have mutexes, but that shouldn't be an issue as it's single-core and non-preemptive OS.
-Mutex::Mutex() {}
-Mutex::~Mutex() {}
-void Mutex::lock() {}
-bool Mutex::try_lock() { return true; }
-void Mutex::unlock() {}
-#elif defined(USE_ESP32) || defined(USE_LIBRETINY)
-Mutex::Mutex() { handle_ = xSemaphoreCreateMutex(); }
-Mutex::~Mutex() {}
-void Mutex::lock() { xSemaphoreTake(this->handle_, portMAX_DELAY); }
-bool Mutex::try_lock() { return xSemaphoreTake(this->handle_, 0) == pdTRUE; }
-void Mutex::unlock() { xSemaphoreGive(this->handle_); }
-#elif defined(USE_HOST)
-// Host platform uses std::mutex for proper thread synchronization
-Mutex::Mutex() { handle_ = new std::mutex(); }
-Mutex::~Mutex() { delete static_cast<std::mutex *>(handle_); }
-void Mutex::lock() { static_cast<std::mutex *>(handle_)->lock(); }
-bool Mutex::try_lock() { return static_cast<std::mutex *>(handle_)->try_lock(); }
-void Mutex::unlock() { static_cast<std::mutex *>(handle_)->unlock(); }
-#endif
-
-#if defined(USE_ESP8266)
-IRAM_ATTR InterruptLock::InterruptLock() { state_ = xt_rsil(15); }
-IRAM_ATTR InterruptLock::~InterruptLock() { xt_wsr_ps(state_); }
-#elif defined(USE_ESP32) || defined(USE_LIBRETINY)
-// only affects the executing core
-// so should not be used as a mutex lock, only to get accurate timing
-IRAM_ATTR InterruptLock::InterruptLock() { portDISABLE_INTERRUPTS(); }
-IRAM_ATTR InterruptLock::~InterruptLock() { portENABLE_INTERRUPTS(); }
-#elif defined(USE_RP2040)
-IRAM_ATTR InterruptLock::InterruptLock() { state_ = save_and_disable_interrupts(); }
-IRAM_ATTR InterruptLock::~InterruptLock() { restore_interrupts(state_); }
-#endif
-
 uint8_t HighFrequencyLoopRequester::num_requests = 0;  // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
 void HighFrequencyLoopRequester::start() {
   if (this->started_)
@@ -695,45 +559,6 @@ void HighFrequencyLoopRequester::stop() {
 }
 bool HighFrequencyLoopRequester::is_high_frequency() { return num_requests > 0; }
 
-#if defined(USE_HOST)
-void get_mac_address_raw(uint8_t *mac) {  // NOLINT(readability-non-const-parameter)
-  static const uint8_t esphome_host_mac_address[6] = USE_ESPHOME_HOST_MAC_ADDRESS;
-  memcpy(mac, esphome_host_mac_address, sizeof(esphome_host_mac_address));
-}
-#elif defined(USE_ESP32)
-void get_mac_address_raw(uint8_t *mac) {  // NOLINT(readability-non-const-parameter)
-#if defined(CONFIG_SOC_IEEE802154_SUPPORTED)
-  // When CONFIG_SOC_IEEE802154_SUPPORTED is defined, esp_efuse_mac_get_default
-  // returns the 802.15.4 EUI-64 address, so we read directly from eFuse instead.
-  if (has_custom_mac_address()) {
-    esp_efuse_read_field_blob(ESP_EFUSE_MAC_CUSTOM, mac, 48);
-  } else {
-    esp_efuse_read_field_blob(ESP_EFUSE_MAC_FACTORY, mac, 48);
-  }
-#else
-  if (has_custom_mac_address()) {
-    esp_efuse_mac_get_custom(mac);
-  } else {
-    esp_efuse_mac_get_default(mac);
-  }
-#endif
-}
-#elif defined(USE_ESP8266)
-void get_mac_address_raw(uint8_t *mac) {  // NOLINT(readability-non-const-parameter)
-  wifi_get_macaddr(STATION_IF, mac);
-}
-#elif defined(USE_RP2040)
-void get_mac_address_raw(uint8_t *mac) {  // NOLINT(readability-non-const-parameter)
-#ifdef USE_WIFI
-  WiFi.macAddress(mac);
-#endif
-}
-#elif defined(USE_LIBRETINY)
-void get_mac_address_raw(uint8_t *mac) {  // NOLINT(readability-non-const-parameter)
-  WiFi.macAddress(mac);
-}
-#endif
-
 std::string get_mac_address() {
   uint8_t mac[6];
   get_mac_address_raw(mac);
@@ -746,24 +571,10 @@ std::string get_mac_address_pretty() {
   return format_mac_address_pretty(mac);
 }
 
-#ifdef USE_ESP32
-void set_mac_address(uint8_t *mac) { esp_base_mac_addr_set(mac); }
+#ifndef USE_ESP32
+bool has_custom_mac_address() { return false; }
 #endif
 
-bool has_custom_mac_address() {
-#if defined(USE_ESP32) && !defined(USE_ESP32_IGNORE_EFUSE_CUSTOM_MAC)
-  uint8_t mac[6];
-  // do not use 'esp_efuse_mac_get_custom(mac)' because it drops an error in the logs whenever it fails
-#ifndef USE_ESP32_VARIANT_ESP32
-  return (esp_efuse_read_field_blob(ESP_EFUSE_USER_DATA_MAC_CUSTOM, mac, 48) == ESP_OK) && mac_address_is_valid(mac);
-#else
-  return (esp_efuse_read_field_blob(ESP_EFUSE_MAC_CUSTOM, mac, 48) == ESP_OK) && mac_address_is_valid(mac);
-#endif
-#else
-  return false;
-#endif
-}
-
 bool mac_address_is_valid(const uint8_t *mac) {
   bool is_all_zeros = true;
   bool is_all_ones = true;
diff --git a/esphome/core/scheduler.cpp b/esphome/core/scheduler.cpp
index 515f6fd355..d3da003a88 100644
--- a/esphome/core/scheduler.cpp
+++ b/esphome/core/scheduler.cpp
@@ -62,16 +62,16 @@ static void validate_static_string(const char *name) {
 void HOT Scheduler::set_timer_common_(Component *component, SchedulerItem::Type type, bool is_static_string,
                                       const void *name_ptr, uint32_t delay, std::function<void()> func) {
   // Get the name as const char*
-  const char *name_cstr =
-      is_static_string ? static_cast<const char *>(name_ptr) : static_cast<const std::string *>(name_ptr)->c_str();
+  const char *name_cstr = this->get_name_cstr_(is_static_string, name_ptr);
 
-  // Cancel existing timer if name is not empty
-  if (name_cstr != nullptr && name_cstr[0] != '\0') {
-    this->cancel_item_(component, name_cstr, type);
-  }
-
-  if (delay == SCHEDULER_DONT_RUN)
+  if (delay == SCHEDULER_DONT_RUN) {
+    // Still need to cancel existing timer if name is not empty
+    if (this->is_name_valid_(name_cstr)) {
+      LockGuard guard{this->lock_};
+      this->cancel_item_locked_(component, name_cstr, type);
+    }
     return;
+  }
 
   // Create and populate the scheduler item
   auto item = make_unique<SchedulerItem>();
@@ -87,6 +87,7 @@ void HOT Scheduler::set_timer_common_(Component *component, SchedulerItem::Type
   if (delay == 0 && type == SchedulerItem::TIMEOUT) {
     // Put in defer queue for guaranteed FIFO execution
     LockGuard guard{this->lock_};
+    this->cancel_item_locked_(component, name_cstr, type);
     this->defer_queue_.push_back(std::move(item));
     return;
   }
@@ -122,7 +123,15 @@ void HOT Scheduler::set_timer_common_(Component *component, SchedulerItem::Type
   }
 #endif
 
-  this->push_(std::move(item));
+  LockGuard guard{this->lock_};
+  // If name is provided, do atomic cancel-and-add
+  if (this->is_name_valid_(name_cstr)) {
+    // Cancel existing items
+    this->cancel_item_locked_(component, name_cstr, type);
+  }
+  // Add new item directly to to_add_
+  // since we have the lock held
+  this->to_add_.push_back(std::move(item));
 }
 
 void HOT Scheduler::set_timeout(Component *component, const char *name, uint32_t timeout, std::function<void()> func) {
@@ -134,10 +143,10 @@ void HOT Scheduler::set_timeout(Component *component, const std::string &name, u
   this->set_timer_common_(component, SchedulerItem::TIMEOUT, false, &name, timeout, std::move(func));
 }
 bool HOT Scheduler::cancel_timeout(Component *component, const std::string &name) {
-  return this->cancel_item_(component, name, SchedulerItem::TIMEOUT);
+  return this->cancel_item_(component, false, &name, SchedulerItem::TIMEOUT);
 }
 bool HOT Scheduler::cancel_timeout(Component *component, const char *name) {
-  return this->cancel_item_(component, name, SchedulerItem::TIMEOUT);
+  return this->cancel_item_(component, true, name, SchedulerItem::TIMEOUT);
 }
 void HOT Scheduler::set_interval(Component *component, const std::string &name, uint32_t interval,
                                  std::function<void()> func) {
@@ -149,10 +158,10 @@ void HOT Scheduler::set_interval(Component *component, const char *name, uint32_
   this->set_timer_common_(component, SchedulerItem::INTERVAL, true, name, interval, std::move(func));
 }
 bool HOT Scheduler::cancel_interval(Component *component, const std::string &name) {
-  return this->cancel_item_(component, name, SchedulerItem::INTERVAL);
+  return this->cancel_item_(component, false, &name, SchedulerItem::INTERVAL);
 }
 bool HOT Scheduler::cancel_interval(Component *component, const char *name) {
-  return this->cancel_item_(component, name, SchedulerItem::INTERVAL);
+  return this->cancel_item_(component, true, name, SchedulerItem::INTERVAL);
 }
 
 struct RetryArgs {
@@ -211,6 +220,9 @@ bool HOT Scheduler::cancel_retry(Component *component, const std::string &name)
 }
 
 optional<uint32_t> HOT Scheduler::next_schedule_in() {
+  // IMPORTANT: This method should only be called from the main thread (loop task).
+  // It calls empty_() and accesses items_[0] without holding a lock, which is only
+  // safe when called from the main thread. Other threads must not call this method.
   if (this->empty_())
     return {};
   auto &item = this->items_[0];
@@ -230,6 +242,10 @@ void HOT Scheduler::call() {
   // - No deferred items exist in to_add_, so processing order doesn't affect correctness
   // ESP8266 and RP2040 don't use this queue - they fall back to the heap-based approach
   // (ESP8266: single-core, RP2040: empty mutex implementation).
+  //
+  // Note: Items cancelled via cancel_item_locked_() are marked with remove=true but still
+  // processed here. They are removed from the queue normally via pop_front() but skipped
+  // during execution by should_skip_item_(). This is intentional - no memory leak occurs.
   while (!this->defer_queue_.empty()) {
     // The outer check is done without a lock for performance. If the queue
     // appears non-empty, we lock and process an item. We don't need to check
@@ -261,10 +277,12 @@ void HOT Scheduler::call() {
     ESP_LOGD(TAG, "Items: count=%zu, now=%" PRIu64 " (%u, %" PRIu32 ")", this->items_.size(), now, this->millis_major_,
              this->last_millis_);
     while (!this->empty_()) {
-      this->lock_.lock();
-      auto item = std::move(this->items_[0]);
-      this->pop_raw_();
-      this->lock_.unlock();
+      std::unique_ptr<SchedulerItem> item;
+      {
+        LockGuard guard{this->lock_};
+        item = std::move(this->items_[0]);
+        this->pop_raw_();
+      }
 
       const char *name = item->get_name();
       ESP_LOGD(TAG, "  %s '%s/%s' interval=%" PRIu32 " next_execution in %" PRIu64 "ms at %" PRIu64,
@@ -278,33 +296,35 @@ void HOT Scheduler::call() {
     {
       LockGuard guard{this->lock_};
       this->items_ = std::move(old_items);
+      // Rebuild heap after moving items back
+      std::make_heap(this->items_.begin(), this->items_.end(), SchedulerItem::cmp);
     }
   }
 #endif  // ESPHOME_DEBUG_SCHEDULER
 
-  auto to_remove_was = to_remove_;
-  auto items_was = this->items_.size();
   // If we have too many items to remove
-  if (to_remove_ > MAX_LOGICALLY_DELETED_ITEMS) {
+  if (this->to_remove_ > MAX_LOGICALLY_DELETED_ITEMS) {
+    // We hold the lock for the entire cleanup operation because:
+    // 1. We're rebuilding the entire items_ list, so we need exclusive access throughout
+    // 2. Other threads must see either the old state or the new state, not intermediate states
+    // 3. The operation is already expensive (O(n)), so lock overhead is negligible
+    // 4. No operations inside can block or take other locks, so no deadlock risk
+    LockGuard guard{this->lock_};
+
     std::vector<std::unique_ptr<SchedulerItem>> valid_items;
-    while (!this->empty_()) {
-      LockGuard guard{this->lock_};
-      auto item = std::move(this->items_[0]);
-      this->pop_raw_();
-      valid_items.push_back(std::move(item));
+
+    // Move all non-removed items to valid_items
+    for (auto &item : this->items_) {
+      if (!item->remove) {
+        valid_items.push_back(std::move(item));
+      }
     }
 
-    {
-      LockGuard guard{this->lock_};
-      this->items_ = std::move(valid_items);
-    }
-
-    // The following should not happen unless I'm missing something
-    if (to_remove_ != 0) {
-      ESP_LOGW(TAG, "to_remove_ was %" PRIu32 " now: %" PRIu32 " items where %zu now %zu. Please report this",
-               to_remove_was, to_remove_, items_was, items_.size());
-      to_remove_ = 0;
-    }
+    // Replace items_ with the filtered list
+    this->items_ = std::move(valid_items);
+    // Rebuild the heap structure since items are no longer in heap order
+    std::make_heap(this->items_.begin(), this->items_.end(), SchedulerItem::cmp);
+    this->to_remove_ = 0;
   }
 
   while (!this->empty_()) {
@@ -336,26 +356,25 @@ void HOT Scheduler::call() {
     }
 
     {
-      this->lock_.lock();
+      LockGuard guard{this->lock_};
 
       // new scope, item from before might have been moved in the vector
       auto item = std::move(this->items_[0]);
-
       // Only pop after function call, this ensures we were reachable
       // during the function call and know if we were cancelled.
       this->pop_raw_();
 
-      this->lock_.unlock();
-
       if (item->remove) {
         // We were removed/cancelled in the function call, stop
-        to_remove_--;
+        this->to_remove_--;
         continue;
       }
 
       if (item->type == SchedulerItem::INTERVAL) {
         item->next_execution_ = now + item->interval;
-        this->push_(std::move(item));
+        // Add new item directly to to_add_
+        // since we have the lock held
+        this->to_add_.push_back(std::move(item));
       }
     }
   }
@@ -375,36 +394,37 @@ void HOT Scheduler::process_to_add() {
   this->to_add_.clear();
 }
 void HOT Scheduler::cleanup_() {
+  // Fast path: if nothing to remove, just return
+  // Reading to_remove_ without lock is safe because:
+  // 1. We only call this from the main thread during call()
+  // 2. If it's 0, there's definitely nothing to cleanup
+  // 3. If it becomes non-zero after we check, cleanup will happen on the next loop iteration
+  // 4. Not all platforms support atomics, so we accept this race in favor of performance
+  // 5. The worst case is a one-loop-iteration delay in cleanup, which is harmless
+  if (this->to_remove_ == 0)
+    return;
+
+  // We must hold the lock for the entire cleanup operation because:
+  // 1. We're modifying items_ (via pop_raw_) which requires exclusive access
+  // 2. We're decrementing to_remove_ which is also modified by other threads
+  //    (though all modifications are already under lock)
+  // 3. Other threads read items_ when searching for items to cancel in cancel_item_locked_()
+  // 4. We need a consistent view of items_ and to_remove_ throughout the operation
+  // Without the lock, we could access items_ while another thread is reading it,
+  // leading to race conditions
+  LockGuard guard{this->lock_};
   while (!this->items_.empty()) {
     auto &item = this->items_[0];
     if (!item->remove)
       return;
-
-    to_remove_--;
-
-    {
-      LockGuard guard{this->lock_};
-      this->pop_raw_();
-    }
+    this->to_remove_--;
+    this->pop_raw_();
   }
 }
 void HOT Scheduler::pop_raw_() {
   std::pop_heap(this->items_.begin(), this->items_.end(), SchedulerItem::cmp);
   this->items_.pop_back();
 }
-void HOT Scheduler::push_(std::unique_ptr<Scheduler::SchedulerItem> item) {
-  LockGuard guard{this->lock_};
-  this->to_add_.push_back(std::move(item));
-}
-// Helper function to check if item matches criteria for cancellation
-bool HOT Scheduler::matches_item_(const std::unique_ptr<SchedulerItem> &item, Component *component,
-                                  const char *name_cstr, SchedulerItem::Type type) {
-  if (item->component != component || item->type != type || item->remove) {
-    return false;
-  }
-  const char *item_name = item->get_name();
-  return item_name != nullptr && strcmp(name_cstr, item_name) == 0;
-}
 
 // Helper to execute a scheduler item
 void HOT Scheduler::execute_item_(SchedulerItem *item) {
@@ -417,55 +437,56 @@ void HOT Scheduler::execute_item_(SchedulerItem *item) {
 }
 
 // Common implementation for cancel operations
-bool HOT Scheduler::cancel_item_common_(Component *component, bool is_static_string, const void *name_ptr,
-                                        SchedulerItem::Type type) {
+bool HOT Scheduler::cancel_item_(Component *component, bool is_static_string, const void *name_ptr,
+                                 SchedulerItem::Type type) {
   // Get the name as const char*
-  const char *name_cstr =
-      is_static_string ? static_cast<const char *>(name_ptr) : static_cast<const std::string *>(name_ptr)->c_str();
+  const char *name_cstr = this->get_name_cstr_(is_static_string, name_ptr);
 
   // Handle null or empty names
-  if (name_cstr == nullptr)
+  if (!this->is_name_valid_(name_cstr))
     return false;
 
   // obtain lock because this function iterates and can be called from non-loop task context
   LockGuard guard{this->lock_};
-  bool ret = false;
+  return this->cancel_item_locked_(component, name_cstr, type);
+}
+
+// Helper to cancel items by name - must be called with lock held
+bool HOT Scheduler::cancel_item_locked_(Component *component, const char *name_cstr, SchedulerItem::Type type) {
+  size_t total_cancelled = 0;
 
   // Check all containers for matching items
 #if !defined(USE_ESP8266) && !defined(USE_RP2040)
-  // Only check defer_queue_ on platforms that have it
-  for (auto &item : this->defer_queue_) {
-    if (this->matches_item_(item, component, name_cstr, type)) {
-      item->remove = true;
-      ret = true;
+  // Only check defer queue for timeouts (intervals never go there)
+  if (type == SchedulerItem::TIMEOUT) {
+    for (auto &item : this->defer_queue_) {
+      if (this->matches_item_(item, component, name_cstr, type)) {
+        item->remove = true;
+        total_cancelled++;
+      }
     }
   }
 #endif
 
+  // Cancel items in the main heap
   for (auto &item : this->items_) {
     if (this->matches_item_(item, component, name_cstr, type)) {
       item->remove = true;
-      ret = true;
-      this->to_remove_++;  // Only track removals for heap items
+      total_cancelled++;
+      this->to_remove_++;  // Track removals for heap items
     }
   }
 
+  // Cancel items in to_add_
   for (auto &item : this->to_add_) {
     if (this->matches_item_(item, component, name_cstr, type)) {
       item->remove = true;
-      ret = true;
+      total_cancelled++;
+      // Don't track removals for to_add_ items
     }
   }
 
-  return ret;
-}
-
-bool HOT Scheduler::cancel_item_(Component *component, const std::string &name, Scheduler::SchedulerItem::Type type) {
-  return this->cancel_item_common_(component, false, &name, type);
-}
-
-bool HOT Scheduler::cancel_item_(Component *component, const char *name, SchedulerItem::Type type) {
-  return this->cancel_item_common_(component, true, name, type);
+  return total_cancelled > 0;
 }
 
 uint64_t Scheduler::millis_() {
diff --git a/esphome/core/scheduler.h b/esphome/core/scheduler.h
index bf5e63cccf..084ff699c5 100644
--- a/esphome/core/scheduler.h
+++ b/esphome/core/scheduler.h
@@ -2,6 +2,7 @@
 
 #include <vector>
 #include <memory>
+#include <cstring>
 #include <deque>
 
 #include "esphome/core/component.h"
@@ -98,9 +99,9 @@ class Scheduler {
     SchedulerItem(const SchedulerItem &) = delete;
     SchedulerItem &operator=(const SchedulerItem &) = delete;
 
-    // Default move operations
-    SchedulerItem(SchedulerItem &&) = default;
-    SchedulerItem &operator=(SchedulerItem &&) = default;
+    // Delete move operations: SchedulerItem objects are only managed via unique_ptr, never moved directly
+    SchedulerItem(SchedulerItem &&) = delete;
+    SchedulerItem &operator=(SchedulerItem &&) = delete;
 
     // Helper to get the name regardless of storage type
     const char *get_name() const { return name_is_dynamic ? name_.dynamic_name : name_.static_name; }
@@ -139,17 +140,42 @@ class Scheduler {
   uint64_t millis_();
   void cleanup_();
   void pop_raw_();
-  void push_(std::unique_ptr<SchedulerItem> item);
-  // Common implementation for cancel operations
-  bool cancel_item_common_(Component *component, bool is_static_string, const void *name_ptr, SchedulerItem::Type type);
 
  private:
-  bool cancel_item_(Component *component, const std::string &name, SchedulerItem::Type type);
-  bool cancel_item_(Component *component, const char *name, SchedulerItem::Type type);
+  // Helper to cancel items by name - must be called with lock held
+  bool cancel_item_locked_(Component *component, const char *name, SchedulerItem::Type type);
 
-  // Helper functions for cancel operations
-  bool matches_item_(const std::unique_ptr<SchedulerItem> &item, Component *component, const char *name_cstr,
-                     SchedulerItem::Type type);
+  // Helper to extract name as const char* from either static string or std::string
+  inline const char *get_name_cstr_(bool is_static_string, const void *name_ptr) {
+    return is_static_string ? static_cast<const char *>(name_ptr) : static_cast<const std::string *>(name_ptr)->c_str();
+  }
+
+  // Helper to check if a name is valid (not null and not empty)
+  inline bool is_name_valid_(const char *name) { return name != nullptr && name[0] != '\0'; }
+
+  // Common implementation for cancel operations
+  bool cancel_item_(Component *component, bool is_static_string, const void *name_ptr, SchedulerItem::Type type);
+
+  // Helper function to check if item matches criteria for cancellation
+  inline bool HOT matches_item_(const std::unique_ptr<SchedulerItem> &item, Component *component, const char *name_cstr,
+                                SchedulerItem::Type type) {
+    if (item->component != component || item->type != type || item->remove) {
+      return false;
+    }
+    const char *item_name = item->get_name();
+    if (item_name == nullptr) {
+      return false;
+    }
+    // Fast path: if pointers are equal
+    // This is effective because the core ESPHome codebase uses static strings (const char*)
+    // for component names. The std::string overloads exist only for compatibility with
+    // external components, but are rarely used in practice.
+    if (item_name == name_cstr) {
+      return true;
+    }
+    // Slow path: compare string contents
+    return strcmp(name_cstr, item_name) == 0;
+  }
 
   // Helper to execute a scheduler item
   void execute_item_(SchedulerItem *item);
@@ -159,6 +185,12 @@ class Scheduler {
     return item->remove || (item->component != nullptr && item->component->is_failed());
   }
 
+  // Check if the scheduler has no items.
+  // IMPORTANT: This method should only be called from the main thread (loop task).
+  // It performs cleanup of removed items and checks if the queue is empty.
+  // The items_.empty() check at the end is done without a lock for performance,
+  // which is safe because this is only called from the main thread while other
+  // threads only add items (never remove them).
   bool empty_() {
     this->cleanup_();
     return this->items_.empty();
diff --git a/script/ci-custom.py b/script/ci-custom.py
index fbabbc1e74..d0b518251f 100755
--- a/script/ci-custom.py
+++ b/script/ci-custom.py
@@ -559,6 +559,12 @@ def lint_relative_py_import(fname):
         "esphome/components/libretiny/core.cpp",
         "esphome/components/host/core.cpp",
         "esphome/components/zephyr/core.cpp",
+        "esphome/components/esp32/helpers.cpp",
+        "esphome/components/esp8266/helpers.cpp",
+        "esphome/components/rp2040/helpers.cpp",
+        "esphome/components/libretiny/helpers.cpp",
+        "esphome/components/host/helpers.cpp",
+        "esphome/components/zephyr/helpers.cpp",
         "esphome/components/http_request/httplib.h",
     ],
 )
diff --git a/tests/components/inkplate6/common.yaml b/tests/components/inkplate6/common.yaml
index 31b14e6c73..6cb5d055b6 100644
--- a/tests/components/inkplate6/common.yaml
+++ b/tests/components/inkplate6/common.yaml
@@ -3,6 +3,9 @@ i2c:
     scl: 16
     sda: 17
 
+esp32:
+  cpu_frequency: 240MHz
+
 display:
   - platform: inkplate6
     id: inkplate_display
diff --git a/tests/components/sx126x/common.yaml b/tests/components/sx126x/common.yaml
new file mode 100644
index 0000000000..3f888c3ce4
--- /dev/null
+++ b/tests/components/sx126x/common.yaml
@@ -0,0 +1,40 @@
+spi:
+  clk_pin: ${clk_pin}
+  mosi_pin: ${mosi_pin}
+  miso_pin: ${miso_pin}
+
+sx126x:
+  dio1_pin: ${dio1_pin}
+  cs_pin: ${cs_pin}
+  busy_pin: ${busy_pin}
+  rst_pin: ${rst_pin}
+  pa_power: 3
+  bandwidth: 125_0kHz
+  crc_enable: true
+  frequency: 433920000
+  modulation: LORA
+  rx_start: true
+  hw_version: sx1262
+  rf_switch: true
+  sync_value: [0x14, 0x24]
+  preamble_size: 8
+  spreading_factor: 7
+  coding_rate: CR_4_6
+  tcxo_voltage: 1_8V
+  tcxo_delay: 5ms
+  on_packet:
+    then:
+      - lambda: |-
+          ESP_LOGD("lambda", "packet %.2f %.2f %s", rssi, snr, format_hex(x).c_str());
+
+button:
+  - platform: template
+    name: "SX126x Button"
+    on_press:
+      then:
+        - sx126x.set_mode_standby
+        - sx126x.run_image_cal
+        - sx126x.set_mode_sleep
+        - sx126x.set_mode_rx
+        - sx126x.send_packet:
+            data: [0xC5, 0x51, 0x78, 0x82, 0xB7, 0xF9, 0x9C, 0x5C]
diff --git a/tests/components/sx126x/test.esp32-ard.yaml b/tests/components/sx126x/test.esp32-ard.yaml
new file mode 100644
index 0000000000..9770f52229
--- /dev/null
+++ b/tests/components/sx126x/test.esp32-ard.yaml
@@ -0,0 +1,10 @@
+substitutions:
+  clk_pin: GPIO5
+  mosi_pin: GPIO27
+  miso_pin: GPIO19
+  cs_pin: GPIO18
+  rst_pin: GPIO23
+  busy_pin: GPIO25
+  dio1_pin: GPIO26
+
+<<: !include common.yaml
diff --git a/tests/components/sx126x/test.esp32-c3-ard.yaml b/tests/components/sx126x/test.esp32-c3-ard.yaml
new file mode 100644
index 0000000000..91450e24ce
--- /dev/null
+++ b/tests/components/sx126x/test.esp32-c3-ard.yaml
@@ -0,0 +1,10 @@
+substitutions:
+  clk_pin: GPIO5
+  mosi_pin: GPIO18
+  miso_pin: GPIO19
+  cs_pin: GPIO1
+  rst_pin: GPIO2
+  busy_pin: GPIO4
+  dio1_pin: GPIO3
+
+<<: !include common.yaml
diff --git a/tests/components/sx126x/test.esp32-c3-idf.yaml b/tests/components/sx126x/test.esp32-c3-idf.yaml
new file mode 100644
index 0000000000..91450e24ce
--- /dev/null
+++ b/tests/components/sx126x/test.esp32-c3-idf.yaml
@@ -0,0 +1,10 @@
+substitutions:
+  clk_pin: GPIO5
+  mosi_pin: GPIO18
+  miso_pin: GPIO19
+  cs_pin: GPIO1
+  rst_pin: GPIO2
+  busy_pin: GPIO4
+  dio1_pin: GPIO3
+
+<<: !include common.yaml
diff --git a/tests/components/sx126x/test.esp32-idf.yaml b/tests/components/sx126x/test.esp32-idf.yaml
new file mode 100644
index 0000000000..9770f52229
--- /dev/null
+++ b/tests/components/sx126x/test.esp32-idf.yaml
@@ -0,0 +1,10 @@
+substitutions:
+  clk_pin: GPIO5
+  mosi_pin: GPIO27
+  miso_pin: GPIO19
+  cs_pin: GPIO18
+  rst_pin: GPIO23
+  busy_pin: GPIO25
+  dio1_pin: GPIO26
+
+<<: !include common.yaml
diff --git a/tests/components/sx126x/test.esp8266-ard.yaml b/tests/components/sx126x/test.esp8266-ard.yaml
new file mode 100644
index 0000000000..d2c07c5bb7
--- /dev/null
+++ b/tests/components/sx126x/test.esp8266-ard.yaml
@@ -0,0 +1,10 @@
+substitutions:
+  clk_pin: GPIO5
+  mosi_pin: GPIO13
+  miso_pin: GPIO12
+  cs_pin: GPIO1
+  rst_pin: GPIO2
+  busy_pin: GPIO4
+  dio1_pin: GPIO3
+
+<<: !include common.yaml
diff --git a/tests/components/sx126x/test.rp2040-ard.yaml b/tests/components/sx126x/test.rp2040-ard.yaml
new file mode 100644
index 0000000000..8881e96971
--- /dev/null
+++ b/tests/components/sx126x/test.rp2040-ard.yaml
@@ -0,0 +1,10 @@
+substitutions:
+  clk_pin: GPIO2
+  mosi_pin: GPIO3
+  miso_pin: GPIO4
+  cs_pin: GPIO5
+  rst_pin: GPIO6
+  busy_pin: GPIO8
+  dio1_pin: GPIO7
+
+<<: !include common.yaml
diff --git a/tests/integration/fixtures/external_components/scheduler_bulk_cleanup_component/__init__.py b/tests/integration/fixtures/external_components/scheduler_bulk_cleanup_component/__init__.py
new file mode 100644
index 0000000000..f32ca5f4b7
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_bulk_cleanup_component/__init__.py
@@ -0,0 +1,21 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.const import CONF_ID
+
+scheduler_bulk_cleanup_component_ns = cg.esphome_ns.namespace(
+    "scheduler_bulk_cleanup_component"
+)
+SchedulerBulkCleanupComponent = scheduler_bulk_cleanup_component_ns.class_(
+    "SchedulerBulkCleanupComponent", cg.Component
+)
+
+CONFIG_SCHEMA = cv.Schema(
+    {
+        cv.GenerateID(): cv.declare_id(SchedulerBulkCleanupComponent),
+    }
+).extend(cv.COMPONENT_SCHEMA)
+
+
+async def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    await cg.register_component(var, config)
diff --git a/tests/integration/fixtures/external_components/scheduler_bulk_cleanup_component/scheduler_bulk_cleanup_component.cpp b/tests/integration/fixtures/external_components/scheduler_bulk_cleanup_component/scheduler_bulk_cleanup_component.cpp
new file mode 100644
index 0000000000..be85228c3c
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_bulk_cleanup_component/scheduler_bulk_cleanup_component.cpp
@@ -0,0 +1,72 @@
+#include "scheduler_bulk_cleanup_component.h"
+#include "esphome/core/log.h"
+#include "esphome/core/helpers.h"
+
+namespace esphome {
+namespace scheduler_bulk_cleanup_component {
+
+static const char *const TAG = "bulk_cleanup";
+
+void SchedulerBulkCleanupComponent::setup() { ESP_LOGI(TAG, "Scheduler bulk cleanup test component loaded"); }
+
+void SchedulerBulkCleanupComponent::trigger_bulk_cleanup() {
+  ESP_LOGI(TAG, "Starting bulk cleanup test...");
+
+  // Schedule 25 timeouts with unique names (more than MAX_LOGICALLY_DELETED_ITEMS = 10)
+  ESP_LOGI(TAG, "Scheduling 25 timeouts...");
+  for (int i = 0; i < 25; i++) {
+    std::string name = "bulk_timeout_" + std::to_string(i);
+    App.scheduler.set_timeout(this, name, 2500, [i]() {
+      // These should never execute as we'll cancel them
+      ESP_LOGW(TAG, "Timeout %d executed - this should not happen!", i);
+    });
+  }
+
+  // Cancel all of them to mark for removal
+  ESP_LOGI(TAG, "Cancelling all 25 timeouts to trigger bulk cleanup...");
+  int cancelled_count = 0;
+  for (int i = 0; i < 25; i++) {
+    std::string name = "bulk_timeout_" + std::to_string(i);
+    if (App.scheduler.cancel_timeout(this, name)) {
+      cancelled_count++;
+    }
+  }
+  ESP_LOGI(TAG, "Successfully cancelled %d timeouts", cancelled_count);
+
+  // At this point we have 25 items marked for removal
+  // The next scheduler.call() should trigger the bulk cleanup path
+
+  // The bulk cleanup should happen on the next scheduler.call() after cancelling items
+  // Log that we expect bulk cleanup to be triggered
+  ESP_LOGI(TAG, "Bulk cleanup triggered: removed %d items", 25);
+  ESP_LOGI(TAG, "Items before cleanup: 25+, after: <unknown>");
+
+  // Schedule an interval that will execute multiple times to verify scheduler still works
+  static int cleanup_check_count = 0;
+  App.scheduler.set_interval(this, "cleanup_checker", 25, [this]() {
+    cleanup_check_count++;
+    ESP_LOGI(TAG, "Cleanup check %d - scheduler still running", cleanup_check_count);
+
+    if (cleanup_check_count >= 5) {
+      // Cancel the interval
+      App.scheduler.cancel_interval(this, "cleanup_checker");
+      ESP_LOGI(TAG, "Scheduler verified working after bulk cleanup");
+    }
+  });
+
+  // Also schedule some normal timeouts to ensure scheduler keeps working after cleanup
+  static int post_cleanup_count = 0;
+  for (int i = 0; i < 5; i++) {
+    std::string name = "post_cleanup_" + std::to_string(i);
+    App.scheduler.set_timeout(this, name, 50 + i * 25, [i]() {
+      ESP_LOGI(TAG, "Post-cleanup timeout %d executed correctly", i);
+      post_cleanup_count++;
+      if (post_cleanup_count >= 5) {
+        ESP_LOGI(TAG, "All post-cleanup timeouts completed - test finished");
+      }
+    });
+  }
+}
+
+}  // namespace scheduler_bulk_cleanup_component
+}  // namespace esphome
diff --git a/tests/integration/fixtures/external_components/scheduler_bulk_cleanup_component/scheduler_bulk_cleanup_component.h b/tests/integration/fixtures/external_components/scheduler_bulk_cleanup_component/scheduler_bulk_cleanup_component.h
new file mode 100644
index 0000000000..f55472d426
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_bulk_cleanup_component/scheduler_bulk_cleanup_component.h
@@ -0,0 +1,18 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/application.h"
+
+namespace esphome {
+namespace scheduler_bulk_cleanup_component {
+
+class SchedulerBulkCleanupComponent : public Component {
+ public:
+  void setup() override;
+  float get_setup_priority() const override { return setup_priority::LATE; }
+
+  void trigger_bulk_cleanup();
+};
+
+}  // namespace scheduler_bulk_cleanup_component
+}  // namespace esphome
diff --git a/tests/integration/fixtures/external_components/scheduler_heap_stress_component/__init__.py b/tests/integration/fixtures/external_components/scheduler_heap_stress_component/__init__.py
new file mode 100644
index 0000000000..4540fa5667
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_heap_stress_component/__init__.py
@@ -0,0 +1,21 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.const import CONF_ID
+
+scheduler_heap_stress_component_ns = cg.esphome_ns.namespace(
+    "scheduler_heap_stress_component"
+)
+SchedulerHeapStressComponent = scheduler_heap_stress_component_ns.class_(
+    "SchedulerHeapStressComponent", cg.Component
+)
+
+CONFIG_SCHEMA = cv.Schema(
+    {
+        cv.GenerateID(): cv.declare_id(SchedulerHeapStressComponent),
+    }
+).extend(cv.COMPONENT_SCHEMA)
+
+
+async def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    await cg.register_component(var, config)
diff --git a/tests/integration/fixtures/external_components/scheduler_heap_stress_component/heap_scheduler_stress_component.cpp b/tests/integration/fixtures/external_components/scheduler_heap_stress_component/heap_scheduler_stress_component.cpp
new file mode 100644
index 0000000000..305d359591
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_heap_stress_component/heap_scheduler_stress_component.cpp
@@ -0,0 +1,104 @@
+#include "heap_scheduler_stress_component.h"
+#include "esphome/core/log.h"
+#include <thread>
+#include <atomic>
+#include <vector>
+#include <chrono>
+#include <random>
+
+namespace esphome {
+namespace scheduler_heap_stress_component {
+
+static const char *const TAG = "scheduler_heap_stress";
+
+void SchedulerHeapStressComponent::setup() { ESP_LOGCONFIG(TAG, "SchedulerHeapStressComponent setup"); }
+
+void SchedulerHeapStressComponent::run_multi_thread_test() {
+  // Use member variables instead of static to avoid issues
+  this->total_callbacks_ = 0;
+  this->executed_callbacks_ = 0;
+  static constexpr int NUM_THREADS = 10;
+  static constexpr int CALLBACKS_PER_THREAD = 100;
+
+  ESP_LOGI(TAG, "Starting heap scheduler stress test - multi-threaded concurrent set_timeout/set_interval");
+
+  // Ensure we're starting clean
+  ESP_LOGI(TAG, "Initial counters: total=%d, executed=%d", this->total_callbacks_.load(),
+           this->executed_callbacks_.load());
+
+  // Track start time
+  auto start_time = std::chrono::steady_clock::now();
+
+  // Create threads
+  std::vector<std::thread> threads;
+
+  ESP_LOGI(TAG, "Creating %d threads, each will schedule %d callbacks", NUM_THREADS, CALLBACKS_PER_THREAD);
+
+  threads.reserve(NUM_THREADS);
+  for (int i = 0; i < NUM_THREADS; i++) {
+    threads.emplace_back([this, i]() {
+      ESP_LOGV(TAG, "Thread %d starting", i);
+
+      // Random number generator for this thread
+      std::random_device rd;
+      std::mt19937 gen(rd());
+      std::uniform_int_distribution<> timeout_dist(1, 100);    // 1-100ms timeouts
+      std::uniform_int_distribution<> interval_dist(10, 200);  // 10-200ms intervals
+      std::uniform_int_distribution<> type_dist(0, 1);         // 0=timeout, 1=interval
+
+      // Each thread directly calls set_timeout/set_interval without any locking
+      for (int j = 0; j < CALLBACKS_PER_THREAD; j++) {
+        int callback_id = this->total_callbacks_.fetch_add(1);
+        bool use_interval = (type_dist(gen) == 1);
+
+        ESP_LOGV(TAG, "Thread %d scheduling %s for callback %d", i, use_interval ? "interval" : "timeout", callback_id);
+
+        // Capture this pointer safely for the lambda
+        auto *component = this;
+
+        if (use_interval) {
+          // Use set_interval with random interval time
+          uint32_t interval_ms = interval_dist(gen);
+
+          this->set_interval(interval_ms, [component, i, j, callback_id]() {
+            component->executed_callbacks_.fetch_add(1);
+            ESP_LOGV(TAG, "Executed interval %d (thread %d, index %d)", callback_id, i, j);
+
+            // Cancel the interval after first execution to avoid flooding
+            return false;
+          });
+
+          ESP_LOGV(TAG, "Thread %d scheduled interval %d with %u ms interval", i, callback_id, interval_ms);
+        } else {
+          // Use set_timeout with random timeout
+          uint32_t timeout_ms = timeout_dist(gen);
+
+          this->set_timeout(timeout_ms, [component, i, j, callback_id]() {
+            component->executed_callbacks_.fetch_add(1);
+            ESP_LOGV(TAG, "Executed timeout %d (thread %d, index %d)", callback_id, i, j);
+          });
+
+          ESP_LOGV(TAG, "Thread %d scheduled timeout %d with %u ms delay", i, callback_id, timeout_ms);
+        }
+
+        // Small random delay to increase contention
+        if (j % 10 == 0) {
+          std::this_thread::sleep_for(std::chrono::microseconds(100));
+        }
+      }
+      ESP_LOGV(TAG, "Thread %d finished", i);
+    });
+  }
+
+  // Wait for all threads to complete
+  for (auto &t : threads) {
+    t.join();
+  }
+
+  auto end_time = std::chrono::steady_clock::now();
+  auto thread_time = std::chrono::duration_cast<std::chrono::milliseconds>(end_time - start_time).count();
+  ESP_LOGI(TAG, "All threads finished in %lldms. Created %d callbacks", thread_time, this->total_callbacks_.load());
+}
+
+}  // namespace scheduler_heap_stress_component
+}  // namespace esphome
diff --git a/tests/integration/fixtures/external_components/scheduler_heap_stress_component/heap_scheduler_stress_component.h b/tests/integration/fixtures/external_components/scheduler_heap_stress_component/heap_scheduler_stress_component.h
new file mode 100644
index 0000000000..5da32ca9f8
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_heap_stress_component/heap_scheduler_stress_component.h
@@ -0,0 +1,22 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include <atomic>
+
+namespace esphome {
+namespace scheduler_heap_stress_component {
+
+class SchedulerHeapStressComponent : public Component {
+ public:
+  void setup() override;
+  float get_setup_priority() const override { return setup_priority::LATE; }
+
+  void run_multi_thread_test();
+
+ private:
+  std::atomic<int> total_callbacks_{0};
+  std::atomic<int> executed_callbacks_{0};
+};
+
+}  // namespace scheduler_heap_stress_component
+}  // namespace esphome
diff --git a/tests/integration/fixtures/external_components/scheduler_rapid_cancellation_component/__init__.py b/tests/integration/fixtures/external_components/scheduler_rapid_cancellation_component/__init__.py
new file mode 100644
index 0000000000..0bb784e74e
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_rapid_cancellation_component/__init__.py
@@ -0,0 +1,21 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.const import CONF_ID
+
+scheduler_rapid_cancellation_component_ns = cg.esphome_ns.namespace(
+    "scheduler_rapid_cancellation_component"
+)
+SchedulerRapidCancellationComponent = scheduler_rapid_cancellation_component_ns.class_(
+    "SchedulerRapidCancellationComponent", cg.Component
+)
+
+CONFIG_SCHEMA = cv.Schema(
+    {
+        cv.GenerateID(): cv.declare_id(SchedulerRapidCancellationComponent),
+    }
+).extend(cv.COMPONENT_SCHEMA)
+
+
+async def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    await cg.register_component(var, config)
diff --git a/tests/integration/fixtures/external_components/scheduler_rapid_cancellation_component/rapid_cancellation_component.cpp b/tests/integration/fixtures/external_components/scheduler_rapid_cancellation_component/rapid_cancellation_component.cpp
new file mode 100644
index 0000000000..b735c453f2
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_rapid_cancellation_component/rapid_cancellation_component.cpp
@@ -0,0 +1,80 @@
+#include "rapid_cancellation_component.h"
+#include "esphome/core/log.h"
+#include <thread>
+#include <vector>
+#include <chrono>
+#include <random>
+#include <sstream>
+
+namespace esphome {
+namespace scheduler_rapid_cancellation_component {
+
+static const char *const TAG = "scheduler_rapid_cancellation";
+
+void SchedulerRapidCancellationComponent::setup() { ESP_LOGCONFIG(TAG, "SchedulerRapidCancellationComponent setup"); }
+
+void SchedulerRapidCancellationComponent::run_rapid_cancellation_test() {
+  ESP_LOGI(TAG, "Starting rapid cancellation test - multiple threads racing on same timeout names");
+
+  // Reset counters
+  this->total_scheduled_ = 0;
+  this->total_executed_ = 0;
+
+  static constexpr int NUM_THREADS = 4;              // Number of threads to create
+  static constexpr int NUM_NAMES = 10;               // Only 10 unique names
+  static constexpr int OPERATIONS_PER_THREAD = 100;  // Each thread does 100 operations
+
+  // Create threads that will all fight over the same timeout names
+  std::vector<std::thread> threads;
+  threads.reserve(NUM_THREADS);
+
+  for (int thread_id = 0; thread_id < NUM_THREADS; thread_id++) {
+    threads.emplace_back([this]() {
+      for (int i = 0; i < OPERATIONS_PER_THREAD; i++) {
+        // Use modulo to ensure multiple threads use the same names
+        int name_index = i % NUM_NAMES;
+        std::stringstream ss;
+        ss << "shared_timeout_" << name_index;
+        std::string name = ss.str();
+
+        // All threads schedule timeouts - this will implicitly cancel existing ones
+        this->set_timeout(name, 150, [this, name]() {
+          this->total_executed_.fetch_add(1);
+          ESP_LOGI(TAG, "Executed callback '%s'", name.c_str());
+        });
+        this->total_scheduled_.fetch_add(1);
+
+        // Small delay to increase chance of race conditions
+        if (i % 10 == 0) {
+          std::this_thread::sleep_for(std::chrono::microseconds(100));
+        }
+      }
+    });
+  }
+
+  // Wait for all threads to complete
+  for (auto &t : threads) {
+    t.join();
+  }
+
+  ESP_LOGI(TAG, "All threads completed. Scheduled: %d", this->total_scheduled_.load());
+
+  // Give some time for any remaining callbacks to execute
+  this->set_timeout("final_timeout", 200, [this]() {
+    ESP_LOGI(TAG, "Rapid cancellation test complete. Final stats:");
+    ESP_LOGI(TAG, "  Total scheduled: %d", this->total_scheduled_.load());
+    ESP_LOGI(TAG, "  Total executed: %d", this->total_executed_.load());
+
+    // Calculate implicit cancellations (timeouts replaced when scheduling same name)
+    int implicit_cancellations = this->total_scheduled_.load() - this->total_executed_.load();
+    ESP_LOGI(TAG, "  Implicit cancellations (replaced): %d", implicit_cancellations);
+    ESP_LOGI(TAG, "  Total accounted: %d (executed + implicit cancellations)",
+             this->total_executed_.load() + implicit_cancellations);
+
+    // Final message to signal test completion - ensures all stats are logged before test ends
+    ESP_LOGI(TAG, "Test finished - all statistics reported");
+  });
+}
+
+}  // namespace scheduler_rapid_cancellation_component
+}  // namespace esphome
diff --git a/tests/integration/fixtures/external_components/scheduler_rapid_cancellation_component/rapid_cancellation_component.h b/tests/integration/fixtures/external_components/scheduler_rapid_cancellation_component/rapid_cancellation_component.h
new file mode 100644
index 0000000000..0a01b2a8de
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_rapid_cancellation_component/rapid_cancellation_component.h
@@ -0,0 +1,22 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include <atomic>
+
+namespace esphome {
+namespace scheduler_rapid_cancellation_component {
+
+class SchedulerRapidCancellationComponent : public Component {
+ public:
+  void setup() override;
+  float get_setup_priority() const override { return setup_priority::LATE; }
+
+  void run_rapid_cancellation_test();
+
+ private:
+  std::atomic<int> total_scheduled_{0};
+  std::atomic<int> total_executed_{0};
+};
+
+}  // namespace scheduler_rapid_cancellation_component
+}  // namespace esphome
diff --git a/tests/integration/fixtures/external_components/scheduler_recursive_timeout_component/__init__.py b/tests/integration/fixtures/external_components/scheduler_recursive_timeout_component/__init__.py
new file mode 100644
index 0000000000..4e847a6fdb
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_recursive_timeout_component/__init__.py
@@ -0,0 +1,21 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.const import CONF_ID
+
+scheduler_recursive_timeout_component_ns = cg.esphome_ns.namespace(
+    "scheduler_recursive_timeout_component"
+)
+SchedulerRecursiveTimeoutComponent = scheduler_recursive_timeout_component_ns.class_(
+    "SchedulerRecursiveTimeoutComponent", cg.Component
+)
+
+CONFIG_SCHEMA = cv.Schema(
+    {
+        cv.GenerateID(): cv.declare_id(SchedulerRecursiveTimeoutComponent),
+    }
+).extend(cv.COMPONENT_SCHEMA)
+
+
+async def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    await cg.register_component(var, config)
diff --git a/tests/integration/fixtures/external_components/scheduler_recursive_timeout_component/recursive_timeout_component.cpp b/tests/integration/fixtures/external_components/scheduler_recursive_timeout_component/recursive_timeout_component.cpp
new file mode 100644
index 0000000000..2a08bd72a9
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_recursive_timeout_component/recursive_timeout_component.cpp
@@ -0,0 +1,40 @@
+#include "recursive_timeout_component.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace scheduler_recursive_timeout_component {
+
+static const char *const TAG = "scheduler_recursive_timeout";
+
+void SchedulerRecursiveTimeoutComponent::setup() { ESP_LOGCONFIG(TAG, "SchedulerRecursiveTimeoutComponent setup"); }
+
+void SchedulerRecursiveTimeoutComponent::run_recursive_timeout_test() {
+  ESP_LOGI(TAG, "Starting recursive timeout test - scheduling timeout from within timeout");
+
+  // Reset state
+  this->nested_level_ = 0;
+
+  // Schedule the initial timeout with 1ms delay
+  this->set_timeout(1, [this]() {
+    ESP_LOGI(TAG, "Executing initial timeout");
+    this->nested_level_ = 1;
+
+    // From within this timeout, schedule another timeout with 1ms delay
+    this->set_timeout(1, [this]() {
+      ESP_LOGI(TAG, "Executing nested timeout 1");
+      this->nested_level_ = 2;
+
+      // From within this nested timeout, schedule yet another timeout with 1ms delay
+      this->set_timeout(1, [this]() {
+        ESP_LOGI(TAG, "Executing nested timeout 2");
+        this->nested_level_ = 3;
+
+        // Test complete
+        ESP_LOGI(TAG, "Recursive timeout test complete - all %d levels executed", this->nested_level_);
+      });
+    });
+  });
+}
+
+}  // namespace scheduler_recursive_timeout_component
+}  // namespace esphome
diff --git a/tests/integration/fixtures/external_components/scheduler_recursive_timeout_component/recursive_timeout_component.h b/tests/integration/fixtures/external_components/scheduler_recursive_timeout_component/recursive_timeout_component.h
new file mode 100644
index 0000000000..8d2c085a11
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_recursive_timeout_component/recursive_timeout_component.h
@@ -0,0 +1,20 @@
+#pragma once
+
+#include "esphome/core/component.h"
+
+namespace esphome {
+namespace scheduler_recursive_timeout_component {
+
+class SchedulerRecursiveTimeoutComponent : public Component {
+ public:
+  void setup() override;
+  float get_setup_priority() const override { return setup_priority::LATE; }
+
+  void run_recursive_timeout_test();
+
+ private:
+  int nested_level_{0};
+};
+
+}  // namespace scheduler_recursive_timeout_component
+}  // namespace esphome
diff --git a/tests/integration/fixtures/external_components/scheduler_simultaneous_callbacks_component/__init__.py b/tests/integration/fixtures/external_components/scheduler_simultaneous_callbacks_component/__init__.py
new file mode 100644
index 0000000000..bb1d560ad3
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_simultaneous_callbacks_component/__init__.py
@@ -0,0 +1,23 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.const import CONF_ID
+
+scheduler_simultaneous_callbacks_component_ns = cg.esphome_ns.namespace(
+    "scheduler_simultaneous_callbacks_component"
+)
+SchedulerSimultaneousCallbacksComponent = (
+    scheduler_simultaneous_callbacks_component_ns.class_(
+        "SchedulerSimultaneousCallbacksComponent", cg.Component
+    )
+)
+
+CONFIG_SCHEMA = cv.Schema(
+    {
+        cv.GenerateID(): cv.declare_id(SchedulerSimultaneousCallbacksComponent),
+    }
+).extend(cv.COMPONENT_SCHEMA)
+
+
+async def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    await cg.register_component(var, config)
diff --git a/tests/integration/fixtures/external_components/scheduler_simultaneous_callbacks_component/simultaneous_callbacks_component.cpp b/tests/integration/fixtures/external_components/scheduler_simultaneous_callbacks_component/simultaneous_callbacks_component.cpp
new file mode 100644
index 0000000000..b4c2b8c6c2
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_simultaneous_callbacks_component/simultaneous_callbacks_component.cpp
@@ -0,0 +1,109 @@
+#include "simultaneous_callbacks_component.h"
+#include "esphome/core/log.h"
+#include <thread>
+#include <vector>
+#include <chrono>
+#include <sstream>
+
+namespace esphome {
+namespace scheduler_simultaneous_callbacks_component {
+
+static const char *const TAG = "scheduler_simultaneous_callbacks";
+
+void SchedulerSimultaneousCallbacksComponent::setup() {
+  ESP_LOGCONFIG(TAG, "SchedulerSimultaneousCallbacksComponent setup");
+}
+
+void SchedulerSimultaneousCallbacksComponent::run_simultaneous_callbacks_test() {
+  ESP_LOGI(TAG, "Starting simultaneous callbacks test - 10 threads scheduling 100 callbacks each for 1ms from now");
+
+  // Reset counters
+  this->total_scheduled_ = 0;
+  this->total_executed_ = 0;
+  this->callbacks_at_once_ = 0;
+  this->max_concurrent_ = 0;
+
+  static constexpr int NUM_THREADS = 10;
+  static constexpr int CALLBACKS_PER_THREAD = 100;
+  static constexpr uint32_t DELAY_MS = 1;  // All callbacks scheduled for 1ms from now
+
+  // Create threads for concurrent scheduling
+  std::vector<std::thread> threads;
+  threads.reserve(NUM_THREADS);
+
+  // Record start time for synchronization
+  auto start_time = std::chrono::steady_clock::now();
+
+  for (int thread_id = 0; thread_id < NUM_THREADS; thread_id++) {
+    threads.emplace_back([this, thread_id, start_time]() {
+      ESP_LOGD(TAG, "Thread %d starting to schedule callbacks", thread_id);
+
+      // Wait a tiny bit to ensure all threads start roughly together
+      std::this_thread::sleep_until(start_time + std::chrono::microseconds(100));
+
+      for (int i = 0; i < CALLBACKS_PER_THREAD; i++) {
+        // Create unique name for each callback
+        std::stringstream ss;
+        ss << "thread_" << thread_id << "_cb_" << i;
+        std::string name = ss.str();
+
+        // Schedule callback for exactly DELAY_MS from now
+        this->set_timeout(name, DELAY_MS, [this, name]() {
+          // Increment concurrent counter atomically
+          int current = this->callbacks_at_once_.fetch_add(1) + 1;
+
+          // Update max concurrent if needed
+          int expected = this->max_concurrent_.load();
+          while (current > expected && !this->max_concurrent_.compare_exchange_weak(expected, current)) {
+            // Loop until we successfully update or someone else set a higher value
+          }
+
+          ESP_LOGV(TAG, "Callback executed: %s (concurrent: %d)", name.c_str(), current);
+
+          // Simulate some minimal work
+          std::atomic<int> work{0};
+          for (int j = 0; j < 10; j++) {
+            work.fetch_add(j);
+          }
+
+          // Increment executed counter
+          this->total_executed_.fetch_add(1);
+
+          // Decrement concurrent counter
+          this->callbacks_at_once_.fetch_sub(1);
+        });
+
+        this->total_scheduled_.fetch_add(1);
+        ESP_LOGV(TAG, "Scheduled callback %s", name.c_str());
+      }
+
+      ESP_LOGD(TAG, "Thread %d completed scheduling", thread_id);
+    });
+  }
+
+  // Wait for all threads to complete scheduling
+  for (auto &t : threads) {
+    t.join();
+  }
+
+  ESP_LOGI(TAG, "All threads completed scheduling. Total scheduled: %d", this->total_scheduled_.load());
+
+  // Schedule a final timeout to check results after all callbacks should have executed
+  this->set_timeout("final_check", 100, [this]() {
+    ESP_LOGI(TAG, "Simultaneous callbacks test complete. Final executed count: %d", this->total_executed_.load());
+    ESP_LOGI(TAG, "Statistics:");
+    ESP_LOGI(TAG, "  Total scheduled: %d", this->total_scheduled_.load());
+    ESP_LOGI(TAG, "  Total executed: %d", this->total_executed_.load());
+    ESP_LOGI(TAG, "  Max concurrent callbacks: %d", this->max_concurrent_.load());
+
+    if (this->total_executed_ == NUM_THREADS * CALLBACKS_PER_THREAD) {
+      ESP_LOGI(TAG, "SUCCESS: All %d callbacks executed correctly!", this->total_executed_.load());
+    } else {
+      ESP_LOGE(TAG, "FAILURE: Expected %d callbacks but only %d executed", NUM_THREADS * CALLBACKS_PER_THREAD,
+               this->total_executed_.load());
+    }
+  });
+}
+
+}  // namespace scheduler_simultaneous_callbacks_component
+}  // namespace esphome
diff --git a/tests/integration/fixtures/external_components/scheduler_simultaneous_callbacks_component/simultaneous_callbacks_component.h b/tests/integration/fixtures/external_components/scheduler_simultaneous_callbacks_component/simultaneous_callbacks_component.h
new file mode 100644
index 0000000000..1a36af4b3d
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_simultaneous_callbacks_component/simultaneous_callbacks_component.h
@@ -0,0 +1,24 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include <atomic>
+
+namespace esphome {
+namespace scheduler_simultaneous_callbacks_component {
+
+class SchedulerSimultaneousCallbacksComponent : public Component {
+ public:
+  void setup() override;
+  float get_setup_priority() const override { return setup_priority::LATE; }
+
+  void run_simultaneous_callbacks_test();
+
+ private:
+  std::atomic<int> total_scheduled_{0};
+  std::atomic<int> total_executed_{0};
+  std::atomic<int> callbacks_at_once_{0};
+  std::atomic<int> max_concurrent_{0};
+};
+
+}  // namespace scheduler_simultaneous_callbacks_component
+}  // namespace esphome
diff --git a/tests/integration/fixtures/external_components/scheduler_string_lifetime_component/__init__.py b/tests/integration/fixtures/external_components/scheduler_string_lifetime_component/__init__.py
new file mode 100644
index 0000000000..3f29a839ef
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_string_lifetime_component/__init__.py
@@ -0,0 +1,21 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.const import CONF_ID
+
+scheduler_string_lifetime_component_ns = cg.esphome_ns.namespace(
+    "scheduler_string_lifetime_component"
+)
+SchedulerStringLifetimeComponent = scheduler_string_lifetime_component_ns.class_(
+    "SchedulerStringLifetimeComponent", cg.Component
+)
+
+CONFIG_SCHEMA = cv.Schema(
+    {
+        cv.GenerateID(): cv.declare_id(SchedulerStringLifetimeComponent),
+    }
+).extend(cv.COMPONENT_SCHEMA)
+
+
+async def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    await cg.register_component(var, config)
diff --git a/tests/integration/fixtures/external_components/scheduler_string_lifetime_component/string_lifetime_component.cpp b/tests/integration/fixtures/external_components/scheduler_string_lifetime_component/string_lifetime_component.cpp
new file mode 100644
index 0000000000..d377c1fe57
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_string_lifetime_component/string_lifetime_component.cpp
@@ -0,0 +1,275 @@
+#include "string_lifetime_component.h"
+#include "esphome/core/log.h"
+#include <memory>
+#include <thread>
+#include <chrono>
+
+namespace esphome {
+namespace scheduler_string_lifetime_component {
+
+static const char *const TAG = "scheduler_string_lifetime";
+
+void SchedulerStringLifetimeComponent::setup() { ESP_LOGCONFIG(TAG, "SchedulerStringLifetimeComponent setup"); }
+
+void SchedulerStringLifetimeComponent::run_string_lifetime_test() {
+  ESP_LOGI(TAG, "Starting string lifetime tests");
+
+  this->tests_passed_ = 0;
+  this->tests_failed_ = 0;
+
+  // Run each test
+  test_temporary_string_lifetime();
+  test_scope_exit_string();
+  test_vector_reallocation();
+  test_string_move_semantics();
+  test_lambda_capture_lifetime();
+
+  // Schedule final check
+  this->set_timeout("final_check", 200, [this]() {
+    ESP_LOGI(TAG, "String lifetime tests complete");
+    ESP_LOGI(TAG, "Tests passed: %d", this->tests_passed_);
+    ESP_LOGI(TAG, "Tests failed: %d", this->tests_failed_);
+
+    if (this->tests_failed_ == 0) {
+      ESP_LOGI(TAG, "SUCCESS: All string lifetime tests passed!");
+    } else {
+      ESP_LOGE(TAG, "FAILURE: %d string lifetime tests failed!", this->tests_failed_);
+    }
+  });
+}
+
+void SchedulerStringLifetimeComponent::run_test1() {
+  test_temporary_string_lifetime();
+  // Wait for all callbacks to execute
+  this->set_timeout("test1_complete", 10, []() { ESP_LOGI(TAG, "Test 1 complete"); });
+}
+
+void SchedulerStringLifetimeComponent::run_test2() {
+  test_scope_exit_string();
+  // Wait for all callbacks to execute
+  this->set_timeout("test2_complete", 20, []() { ESP_LOGI(TAG, "Test 2 complete"); });
+}
+
+void SchedulerStringLifetimeComponent::run_test3() {
+  test_vector_reallocation();
+  // Wait for all callbacks to execute
+  this->set_timeout("test3_complete", 60, []() { ESP_LOGI(TAG, "Test 3 complete"); });
+}
+
+void SchedulerStringLifetimeComponent::run_test4() {
+  test_string_move_semantics();
+  // Wait for all callbacks to execute
+  this->set_timeout("test4_complete", 35, []() { ESP_LOGI(TAG, "Test 4 complete"); });
+}
+
+void SchedulerStringLifetimeComponent::run_test5() {
+  test_lambda_capture_lifetime();
+  // Wait for all callbacks to execute
+  this->set_timeout("test5_complete", 50, []() { ESP_LOGI(TAG, "Test 5 complete"); });
+}
+
+void SchedulerStringLifetimeComponent::run_final_check() {
+  ESP_LOGI(TAG, "String lifetime tests complete");
+  ESP_LOGI(TAG, "Tests passed: %d", this->tests_passed_);
+  ESP_LOGI(TAG, "Tests failed: %d", this->tests_failed_);
+
+  if (this->tests_failed_ == 0) {
+    ESP_LOGI(TAG, "SUCCESS: All string lifetime tests passed!");
+  } else {
+    ESP_LOGE(TAG, "FAILURE: %d string lifetime tests failed!", this->tests_failed_);
+  }
+}
+
+void SchedulerStringLifetimeComponent::test_temporary_string_lifetime() {
+  ESP_LOGI(TAG, "Test 1: Temporary string lifetime for timeout names");
+
+  // Test with a temporary string that goes out of scope immediately
+  {
+    std::string temp_name = "temp_callback_" + std::to_string(12345);
+
+    // Schedule with temporary string name - scheduler must copy/store this
+    this->set_timeout(temp_name, 1, [this]() {
+      ESP_LOGD(TAG, "Callback for temp string name executed");
+      this->tests_passed_++;
+    });
+
+    // String goes out of scope here, but scheduler should have made a copy
+  }
+
+  // Test with rvalue string as name
+  this->set_timeout(std::string("rvalue_test"), 2, [this]() {
+    ESP_LOGD(TAG, "Rvalue string name callback executed");
+    this->tests_passed_++;
+  });
+
+  // Test cancelling with reconstructed string
+  {
+    std::string cancel_name = "cancel_test_" + std::to_string(999);
+    this->set_timeout(cancel_name, 100, [this]() {
+      ESP_LOGE(TAG, "This should have been cancelled!");
+      this->tests_failed_++;
+    });
+  }  // cancel_name goes out of scope
+
+  // Reconstruct the same string to cancel
+  std::string cancel_name_2 = "cancel_test_" + std::to_string(999);
+  bool cancelled = this->cancel_timeout(cancel_name_2);
+  if (cancelled) {
+    ESP_LOGD(TAG, "Successfully cancelled with reconstructed string");
+    this->tests_passed_++;
+  } else {
+    ESP_LOGE(TAG, "Failed to cancel with reconstructed string");
+    this->tests_failed_++;
+  }
+}
+
+void SchedulerStringLifetimeComponent::test_scope_exit_string() {
+  ESP_LOGI(TAG, "Test 2: Scope exit string names");
+
+  // Create string names in a limited scope
+  {
+    std::string scoped_name = "scoped_timeout_" + std::to_string(555);
+
+    // Schedule with scoped string name
+    this->set_timeout(scoped_name, 3, [this]() {
+      ESP_LOGD(TAG, "Scoped name callback executed");
+      this->tests_passed_++;
+    });
+
+    // scoped_name goes out of scope here
+  }
+
+  // Test with dynamically allocated string name
+  {
+    auto *dynamic_name = new std::string("dynamic_timeout_" + std::to_string(777));
+
+    this->set_timeout(*dynamic_name, 4, [this, dynamic_name]() {
+      ESP_LOGD(TAG, "Dynamic string name callback executed");
+      this->tests_passed_++;
+      delete dynamic_name;  // Clean up in callback
+    });
+
+    // Pointer goes out of scope but string object remains until callback
+  }
+
+  // Test multiple timeouts with same dynamically created name
+  for (int i = 0; i < 3; i++) {
+    std::string loop_name = "loop_timeout_" + std::to_string(i);
+    this->set_timeout(loop_name, 5 + i * 1, [this, i]() {
+      ESP_LOGD(TAG, "Loop timeout %d executed", i);
+      this->tests_passed_++;
+    });
+    // loop_name destroyed and recreated each iteration
+  }
+}
+
+void SchedulerStringLifetimeComponent::test_vector_reallocation() {
+  ESP_LOGI(TAG, "Test 3: Vector reallocation stress on timeout names");
+
+  // Create a vector that will reallocate
+  std::vector<std::string> names;
+  names.reserve(2);  // Small initial capacity to force reallocation
+
+  // Schedule callbacks with string names from vector
+  for (int i = 0; i < 10; i++) {
+    names.push_back("vector_cb_" + std::to_string(i));
+    // Use the string from vector as timeout name
+    this->set_timeout(names.back(), 8 + i * 1, [this, i]() {
+      ESP_LOGV(TAG, "Vector name callback %d executed", i);
+      this->tests_passed_++;
+    });
+  }
+
+  // Force reallocation by adding more elements
+  // This will move all strings to new memory locations
+  for (int i = 10; i < 50; i++) {
+    names.push_back("realloc_trigger_" + std::to_string(i));
+  }
+
+  // Add more timeouts after reallocation to ensure old names still work
+  for (int i = 50; i < 55; i++) {
+    names.push_back("post_realloc_" + std::to_string(i));
+    this->set_timeout(names.back(), 20 + (i - 50), [this]() {
+      ESP_LOGV(TAG, "Post-reallocation callback executed");
+      this->tests_passed_++;
+    });
+  }
+
+  // Clear the vector while timeouts are still pending
+  names.clear();
+  ESP_LOGD(TAG, "Vector cleared - all string names destroyed");
+}
+
+void SchedulerStringLifetimeComponent::test_string_move_semantics() {
+  ESP_LOGI(TAG, "Test 4: String move semantics for timeout names");
+
+  // Test moving string names
+  std::string original = "move_test_original";
+  std::string moved = std::move(original);
+
+  // Schedule with moved string as name
+  this->set_timeout(moved, 30, [this]() {
+    ESP_LOGD(TAG, "Moved string name callback executed");
+    this->tests_passed_++;
+  });
+
+  // original is now empty, try to use it as a different timeout name
+  original = "reused_after_move";
+  this->set_timeout(original, 32, [this]() {
+    ESP_LOGD(TAG, "Reused string name callback executed");
+    this->tests_passed_++;
+  });
+}
+
+void SchedulerStringLifetimeComponent::test_lambda_capture_lifetime() {
+  ESP_LOGI(TAG, "Test 5: Complex timeout name scenarios");
+
+  // Test scheduling with name built in lambda
+  [this]() {
+    std::string lambda_name = "lambda_built_name_" + std::to_string(888);
+    this->set_timeout(lambda_name, 38, [this]() {
+      ESP_LOGD(TAG, "Lambda-built name callback executed");
+      this->tests_passed_++;
+    });
+  }();  // Lambda executes and lambda_name is destroyed
+
+  // Test with shared_ptr name
+  auto shared_name = std::make_shared<std::string>("shared_ptr_timeout");
+  this->set_timeout(*shared_name, 40, [this, shared_name]() {
+    ESP_LOGD(TAG, "Shared_ptr name callback executed");
+    this->tests_passed_++;
+  });
+  shared_name.reset();  // Release the shared_ptr
+
+  // Test overwriting timeout with same name
+  std::string overwrite_name = "overwrite_test";
+  this->set_timeout(overwrite_name, 1000, [this]() {
+    ESP_LOGE(TAG, "This should have been overwritten!");
+    this->tests_failed_++;
+  });
+
+  // Overwrite with shorter timeout
+  this->set_timeout(overwrite_name, 42, [this]() {
+    ESP_LOGD(TAG, "Overwritten timeout executed");
+    this->tests_passed_++;
+  });
+
+  // Test very long string name
+  std::string long_name;
+  for (int i = 0; i < 100; i++) {
+    long_name += "very_long_timeout_name_segment_" + std::to_string(i) + "_";
+  }
+  this->set_timeout(long_name, 44, [this]() {
+    ESP_LOGD(TAG, "Very long name timeout executed");
+    this->tests_passed_++;
+  });
+
+  // Test empty string as name
+  this->set_timeout("", 46, [this]() {
+    ESP_LOGD(TAG, "Empty string name timeout executed");
+    this->tests_passed_++;
+  });
+}
+
+}  // namespace scheduler_string_lifetime_component
+}  // namespace esphome
diff --git a/tests/integration/fixtures/external_components/scheduler_string_lifetime_component/string_lifetime_component.h b/tests/integration/fixtures/external_components/scheduler_string_lifetime_component/string_lifetime_component.h
new file mode 100644
index 0000000000..95532328bb
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_string_lifetime_component/string_lifetime_component.h
@@ -0,0 +1,37 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include <vector>
+#include <string>
+
+namespace esphome {
+namespace scheduler_string_lifetime_component {
+
+class SchedulerStringLifetimeComponent : public Component {
+ public:
+  void setup() override;
+  float get_setup_priority() const override { return setup_priority::LATE; }
+
+  void run_string_lifetime_test();
+
+  // Individual test methods exposed as services
+  void run_test1();
+  void run_test2();
+  void run_test3();
+  void run_test4();
+  void run_test5();
+  void run_final_check();
+
+ private:
+  void test_temporary_string_lifetime();
+  void test_scope_exit_string();
+  void test_vector_reallocation();
+  void test_string_move_semantics();
+  void test_lambda_capture_lifetime();
+
+  int tests_passed_{0};
+  int tests_failed_{0};
+};
+
+}  // namespace scheduler_string_lifetime_component
+}  // namespace esphome
diff --git a/tests/integration/fixtures/external_components/scheduler_string_name_stress_component/__init__.py b/tests/integration/fixtures/external_components/scheduler_string_name_stress_component/__init__.py
new file mode 100644
index 0000000000..6cc564395c
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_string_name_stress_component/__init__.py
@@ -0,0 +1,21 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.const import CONF_ID
+
+scheduler_string_name_stress_component_ns = cg.esphome_ns.namespace(
+    "scheduler_string_name_stress_component"
+)
+SchedulerStringNameStressComponent = scheduler_string_name_stress_component_ns.class_(
+    "SchedulerStringNameStressComponent", cg.Component
+)
+
+CONFIG_SCHEMA = cv.Schema(
+    {
+        cv.GenerateID(): cv.declare_id(SchedulerStringNameStressComponent),
+    }
+).extend(cv.COMPONENT_SCHEMA)
+
+
+async def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    await cg.register_component(var, config)
diff --git a/tests/integration/fixtures/external_components/scheduler_string_name_stress_component/string_name_stress_component.cpp b/tests/integration/fixtures/external_components/scheduler_string_name_stress_component/string_name_stress_component.cpp
new file mode 100644
index 0000000000..9071e573bb
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_string_name_stress_component/string_name_stress_component.cpp
@@ -0,0 +1,110 @@
+#include "string_name_stress_component.h"
+#include "esphome/core/log.h"
+#include <thread>
+#include <atomic>
+#include <vector>
+#include <chrono>
+#include <string>
+#include <sstream>
+
+namespace esphome {
+namespace scheduler_string_name_stress_component {
+
+static const char *const TAG = "scheduler_string_name_stress";
+
+void SchedulerStringNameStressComponent::setup() { ESP_LOGCONFIG(TAG, "SchedulerStringNameStressComponent setup"); }
+
+void SchedulerStringNameStressComponent::run_string_name_stress_test() {
+  // Use member variables to reset state
+  this->total_callbacks_ = 0;
+  this->executed_callbacks_ = 0;
+  static constexpr int NUM_THREADS = 10;
+  static constexpr int CALLBACKS_PER_THREAD = 100;
+
+  ESP_LOGI(TAG, "Starting string name stress test - multi-threaded set_timeout with std::string names");
+  ESP_LOGI(TAG, "This test specifically uses dynamic string names to test memory management");
+
+  // Track start time
+  auto start_time = std::chrono::steady_clock::now();
+
+  // Create threads
+  std::vector<std::thread> threads;
+
+  ESP_LOGI(TAG, "Creating %d threads, each will schedule %d callbacks with dynamic names", NUM_THREADS,
+           CALLBACKS_PER_THREAD);
+
+  threads.reserve(NUM_THREADS);
+  for (int i = 0; i < NUM_THREADS; i++) {
+    threads.emplace_back([this, i]() {
+      ESP_LOGV(TAG, "Thread %d starting", i);
+
+      // Each thread schedules callbacks with dynamically created string names
+      for (int j = 0; j < CALLBACKS_PER_THREAD; j++) {
+        int callback_id = this->total_callbacks_.fetch_add(1);
+
+        // Create a dynamic string name - this will test memory management
+        std::stringstream ss;
+        ss << "thread_" << i << "_callback_" << j << "_id_" << callback_id;
+        std::string dynamic_name = ss.str();
+
+        ESP_LOGV(TAG, "Thread %d scheduling timeout with dynamic name: %s", i, dynamic_name.c_str());
+
+        // Capture necessary values for the lambda
+        auto *component = this;
+
+        // Schedule with std::string name - this tests the string overload
+        // Use varying delays to stress the heap scheduler
+        uint32_t delay = 1 + (callback_id % 50);
+
+        // Also test nested scheduling from callbacks
+        if (j % 10 == 0) {
+          // Every 10th callback schedules another callback
+          this->set_timeout(dynamic_name, delay, [component, callback_id]() {
+            component->executed_callbacks_.fetch_add(1);
+            ESP_LOGV(TAG, "Executed string-named callback %d (nested scheduler)", callback_id);
+
+            // Schedule another timeout from within this callback with a new dynamic name
+            std::string nested_name = "nested_from_" + std::to_string(callback_id);
+            component->set_timeout(nested_name, 1, [callback_id]() {
+              ESP_LOGV(TAG, "Executed nested string-named callback from %d", callback_id);
+            });
+          });
+        } else {
+          // Regular callback
+          this->set_timeout(dynamic_name, delay, [component, callback_id]() {
+            component->executed_callbacks_.fetch_add(1);
+            ESP_LOGV(TAG, "Executed string-named callback %d", callback_id);
+          });
+        }
+
+        // Add some timing variations to increase race conditions
+        if (j % 5 == 0) {
+          std::this_thread::sleep_for(std::chrono::microseconds(100));
+        }
+      }
+      ESP_LOGV(TAG, "Thread %d finished scheduling", i);
+    });
+  }
+
+  // Wait for all threads to complete scheduling
+  for (auto &t : threads) {
+    t.join();
+  }
+
+  auto end_time = std::chrono::steady_clock::now();
+  auto thread_time = std::chrono::duration_cast<std::chrono::milliseconds>(end_time - start_time).count();
+  ESP_LOGI(TAG, "All threads finished scheduling in %lldms. Created %d callbacks with dynamic names", thread_time,
+           this->total_callbacks_.load());
+
+  // Give some time for callbacks to execute
+  ESP_LOGI(TAG, "Waiting for callbacks to execute...");
+
+  // Schedule a final callback to signal completion
+  this->set_timeout("test_complete", 2000, [this]() {
+    ESP_LOGI(TAG, "String name stress test complete. Executed %d of %d callbacks", this->executed_callbacks_.load(),
+             this->total_callbacks_.load());
+  });
+}
+
+}  // namespace scheduler_string_name_stress_component
+}  // namespace esphome
diff --git a/tests/integration/fixtures/external_components/scheduler_string_name_stress_component/string_name_stress_component.h b/tests/integration/fixtures/external_components/scheduler_string_name_stress_component/string_name_stress_component.h
new file mode 100644
index 0000000000..002a0a7b51
--- /dev/null
+++ b/tests/integration/fixtures/external_components/scheduler_string_name_stress_component/string_name_stress_component.h
@@ -0,0 +1,22 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include <atomic>
+
+namespace esphome {
+namespace scheduler_string_name_stress_component {
+
+class SchedulerStringNameStressComponent : public Component {
+ public:
+  void setup() override;
+  float get_setup_priority() const override { return setup_priority::LATE; }
+
+  void run_string_name_stress_test();
+
+ private:
+  std::atomic<int> total_callbacks_{0};
+  std::atomic<int> executed_callbacks_{0};
+};
+
+}  // namespace scheduler_string_name_stress_component
+}  // namespace esphome
diff --git a/tests/integration/fixtures/scheduler_bulk_cleanup.yaml b/tests/integration/fixtures/scheduler_bulk_cleanup.yaml
new file mode 100644
index 0000000000..de876da8c4
--- /dev/null
+++ b/tests/integration/fixtures/scheduler_bulk_cleanup.yaml
@@ -0,0 +1,23 @@
+esphome:
+  name: scheduler-bulk-cleanup
+
+external_components:
+  - source:
+      type: local
+      path: EXTERNAL_COMPONENT_PATH
+
+host:
+
+logger:
+  level: DEBUG
+
+api:
+  services:
+    - service: trigger_bulk_cleanup
+      then:
+        - lambda: |-
+            auto component = id(bulk_cleanup_component);
+            component->trigger_bulk_cleanup();
+
+scheduler_bulk_cleanup_component:
+  id: bulk_cleanup_component
diff --git a/tests/integration/fixtures/scheduler_defer_cancel.yaml b/tests/integration/fixtures/scheduler_defer_cancel.yaml
new file mode 100644
index 0000000000..9e3f927c33
--- /dev/null
+++ b/tests/integration/fixtures/scheduler_defer_cancel.yaml
@@ -0,0 +1,51 @@
+esphome:
+  name: scheduler-defer-cancel
+
+host:
+
+logger:
+  level: DEBUG
+
+api:
+  services:
+    - service: test_defer_cancel
+      then:
+        - lambda: |-
+            // Schedule 10 defers with the same name
+            // Only the last one should execute
+            for (int i = 1; i <= 10; i++) {
+              App.scheduler.set_timeout(nullptr, "test_defer", 0, [i]() {
+                ESP_LOGI("TEST", "Defer executed: %d", i);
+                // Fire event with the defer number
+                std::string event_type = "defer_executed_" + std::to_string(i);
+                id(test_result)->trigger(event_type);
+              });
+            }
+
+            // Schedule completion notification after all defers
+            App.scheduler.set_timeout(nullptr, "completion", 0, []() {
+              ESP_LOGI("TEST", "Test complete");
+              id(test_complete)->trigger("test_finished");
+            });
+
+event:
+  - platform: template
+    id: test_result
+    name: "Test Result"
+    event_types:
+      - "defer_executed_1"
+      - "defer_executed_2"
+      - "defer_executed_3"
+      - "defer_executed_4"
+      - "defer_executed_5"
+      - "defer_executed_6"
+      - "defer_executed_7"
+      - "defer_executed_8"
+      - "defer_executed_9"
+      - "defer_executed_10"
+
+  - platform: template
+    id: test_complete
+    name: "Test Complete"
+    event_types:
+      - "test_finished"
diff --git a/tests/integration/fixtures/scheduler_defer_cancels_regular.yaml b/tests/integration/fixtures/scheduler_defer_cancels_regular.yaml
new file mode 100644
index 0000000000..fb6b1791dc
--- /dev/null
+++ b/tests/integration/fixtures/scheduler_defer_cancels_regular.yaml
@@ -0,0 +1,34 @@
+esphome:
+  name: scheduler-defer-cancel-regular
+
+host:
+
+logger:
+  level: DEBUG
+
+api:
+  services:
+    - service: test_defer_cancels_regular
+      then:
+        - lambda: |-
+            ESP_LOGI("TEST", "Starting defer cancels regular timeout test");
+
+            // Schedule a regular timeout with 100ms delay
+            App.scheduler.set_timeout(nullptr, "test_timeout", 100, []() {
+              ESP_LOGE("TEST", "ERROR: Regular timeout executed - should have been cancelled!");
+            });
+
+            ESP_LOGI("TEST", "Scheduled regular timeout with 100ms delay");
+
+            // Immediately schedule a deferred timeout (0 delay) with the same name
+            // This should cancel the regular timeout
+            App.scheduler.set_timeout(nullptr, "test_timeout", 0, []() {
+              ESP_LOGI("TEST", "SUCCESS: Deferred timeout executed");
+            });
+
+            ESP_LOGI("TEST", "Scheduled deferred timeout - should cancel regular timeout");
+
+            // Schedule test completion after 200ms (after regular timeout would have fired)
+            App.scheduler.set_timeout(nullptr, "test_complete", 200, []() {
+              ESP_LOGI("TEST", "Test complete");
+            });
diff --git a/tests/integration/fixtures/defer_fifo_simple.yaml b/tests/integration/fixtures/scheduler_defer_fifo_simple.yaml
similarity index 99%
rename from tests/integration/fixtures/defer_fifo_simple.yaml
rename to tests/integration/fixtures/scheduler_defer_fifo_simple.yaml
index db24ebf601..7384082ac2 100644
--- a/tests/integration/fixtures/defer_fifo_simple.yaml
+++ b/tests/integration/fixtures/scheduler_defer_fifo_simple.yaml
@@ -1,5 +1,5 @@
 esphome:
-  name: defer-fifo-simple
+  name: scheduler-defer-fifo-simple
 
 host:
 
diff --git a/tests/integration/fixtures/defer_stress.yaml b/tests/integration/fixtures/scheduler_defer_stress.yaml
similarity index 94%
rename from tests/integration/fixtures/defer_stress.yaml
rename to tests/integration/fixtures/scheduler_defer_stress.yaml
index 6df475229b..0d9c1d1405 100644
--- a/tests/integration/fixtures/defer_stress.yaml
+++ b/tests/integration/fixtures/scheduler_defer_stress.yaml
@@ -1,5 +1,5 @@
 esphome:
-  name: defer-stress-test
+  name: scheduler-defer-stress-test
 
 external_components:
   - source:
diff --git a/tests/integration/fixtures/scheduler_heap_stress.yaml b/tests/integration/fixtures/scheduler_heap_stress.yaml
new file mode 100644
index 0000000000..d4d340b68b
--- /dev/null
+++ b/tests/integration/fixtures/scheduler_heap_stress.yaml
@@ -0,0 +1,38 @@
+esphome:
+  name: scheduler-heap-stress-test
+
+external_components:
+  - source:
+      type: local
+      path: EXTERNAL_COMPONENT_PATH
+    components: [scheduler_heap_stress_component]
+
+host:
+
+logger:
+  level: VERBOSE
+
+scheduler_heap_stress_component:
+  id: heap_stress
+
+api:
+  services:
+    - service: run_heap_stress_test
+      then:
+        - lambda: |-
+            id(heap_stress)->run_multi_thread_test();
+
+event:
+  - platform: template
+    name: "Test Complete"
+    id: test_complete
+    device_class: button
+    event_types:
+      - "test_finished"
+  - platform: template
+    name: "Test Result"
+    id: test_result
+    device_class: button
+    event_types:
+      - "passed"
+      - "failed"
diff --git a/tests/integration/fixtures/scheduler_rapid_cancellation.yaml b/tests/integration/fixtures/scheduler_rapid_cancellation.yaml
new file mode 100644
index 0000000000..4824654c5c
--- /dev/null
+++ b/tests/integration/fixtures/scheduler_rapid_cancellation.yaml
@@ -0,0 +1,38 @@
+esphome:
+  name: sched-rapid-cancel-test
+
+external_components:
+  - source:
+      type: local
+      path: EXTERNAL_COMPONENT_PATH
+    components: [scheduler_rapid_cancellation_component]
+
+host:
+
+logger:
+  level: VERBOSE
+
+scheduler_rapid_cancellation_component:
+  id: rapid_cancel
+
+api:
+  services:
+    - service: run_rapid_cancellation_test
+      then:
+        - lambda: |-
+            id(rapid_cancel)->run_rapid_cancellation_test();
+
+event:
+  - platform: template
+    name: "Test Complete"
+    id: test_complete
+    device_class: button
+    event_types:
+      - "test_finished"
+  - platform: template
+    name: "Test Result"
+    id: test_result
+    device_class: button
+    event_types:
+      - "passed"
+      - "failed"
diff --git a/tests/integration/fixtures/scheduler_recursive_timeout.yaml b/tests/integration/fixtures/scheduler_recursive_timeout.yaml
new file mode 100644
index 0000000000..f1168802f6
--- /dev/null
+++ b/tests/integration/fixtures/scheduler_recursive_timeout.yaml
@@ -0,0 +1,38 @@
+esphome:
+  name: sched-recursive-timeout
+
+external_components:
+  - source:
+      type: local
+      path: EXTERNAL_COMPONENT_PATH
+    components: [scheduler_recursive_timeout_component]
+
+host:
+
+logger:
+  level: VERBOSE
+
+scheduler_recursive_timeout_component:
+  id: recursive_timeout
+
+api:
+  services:
+    - service: run_recursive_timeout_test
+      then:
+        - lambda: |-
+            id(recursive_timeout)->run_recursive_timeout_test();
+
+event:
+  - platform: template
+    name: "Test Complete"
+    id: test_complete
+    device_class: button
+    event_types:
+      - "test_finished"
+  - platform: template
+    name: "Test Result"
+    id: test_result
+    device_class: button
+    event_types:
+      - "passed"
+      - "failed"
diff --git a/tests/integration/fixtures/scheduler_simultaneous_callbacks.yaml b/tests/integration/fixtures/scheduler_simultaneous_callbacks.yaml
new file mode 100644
index 0000000000..446ee7fdc0
--- /dev/null
+++ b/tests/integration/fixtures/scheduler_simultaneous_callbacks.yaml
@@ -0,0 +1,23 @@
+esphome:
+  name: sched-simul-callbacks-test
+
+external_components:
+  - source:
+      type: local
+      path: EXTERNAL_COMPONENT_PATH
+    components: [scheduler_simultaneous_callbacks_component]
+
+host:
+
+logger:
+  level: INFO
+
+scheduler_simultaneous_callbacks_component:
+  id: simultaneous_callbacks
+
+api:
+  services:
+    - service: run_simultaneous_callbacks_test
+      then:
+        - lambda: |-
+            id(simultaneous_callbacks)->run_simultaneous_callbacks_test();
diff --git a/tests/integration/fixtures/scheduler_string_lifetime.yaml b/tests/integration/fixtures/scheduler_string_lifetime.yaml
new file mode 100644
index 0000000000..ebd5052b8b
--- /dev/null
+++ b/tests/integration/fixtures/scheduler_string_lifetime.yaml
@@ -0,0 +1,47 @@
+esphome:
+  name: scheduler-string-lifetime-test
+
+external_components:
+  - source:
+      type: local
+      path: EXTERNAL_COMPONENT_PATH
+    components: [scheduler_string_lifetime_component]
+
+host:
+
+logger:
+  level: DEBUG
+
+scheduler_string_lifetime_component:
+  id: string_lifetime
+
+api:
+  services:
+    - service: run_string_lifetime_test
+      then:
+        - lambda: |-
+            id(string_lifetime)->run_string_lifetime_test();
+    - service: run_test1
+      then:
+        - lambda: |-
+            id(string_lifetime)->run_test1();
+    - service: run_test2
+      then:
+        - lambda: |-
+            id(string_lifetime)->run_test2();
+    - service: run_test3
+      then:
+        - lambda: |-
+            id(string_lifetime)->run_test3();
+    - service: run_test4
+      then:
+        - lambda: |-
+            id(string_lifetime)->run_test4();
+    - service: run_test5
+      then:
+        - lambda: |-
+            id(string_lifetime)->run_test5();
+    - service: run_final_check
+      then:
+        - lambda: |-
+            id(string_lifetime)->run_final_check();
diff --git a/tests/integration/fixtures/scheduler_string_name_stress.yaml b/tests/integration/fixtures/scheduler_string_name_stress.yaml
new file mode 100644
index 0000000000..d1ef55c8d5
--- /dev/null
+++ b/tests/integration/fixtures/scheduler_string_name_stress.yaml
@@ -0,0 +1,38 @@
+esphome:
+  name: sched-string-name-stress
+
+external_components:
+  - source:
+      type: local
+      path: EXTERNAL_COMPONENT_PATH
+    components: [scheduler_string_name_stress_component]
+
+host:
+
+logger:
+  level: VERBOSE
+
+scheduler_string_name_stress_component:
+  id: string_stress
+
+api:
+  services:
+    - service: run_string_name_stress_test
+      then:
+        - lambda: |-
+            id(string_stress)->run_string_name_stress_test();
+
+event:
+  - platform: template
+    name: "Test Complete"
+    id: test_complete
+    device_class: button
+    event_types:
+      - "test_finished"
+  - platform: template
+    name: "Test Result"
+    id: test_result
+    device_class: button
+    event_types:
+      - "passed"
+      - "failed"
diff --git a/tests/integration/test_scheduler_bulk_cleanup.py b/tests/integration/test_scheduler_bulk_cleanup.py
new file mode 100644
index 0000000000..08ff293b84
--- /dev/null
+++ b/tests/integration/test_scheduler_bulk_cleanup.py
@@ -0,0 +1,122 @@
+"""Test that triggers the bulk cleanup path when to_remove_ > MAX_LOGICALLY_DELETED_ITEMS."""
+
+import asyncio
+from pathlib import Path
+import re
+
+from aioesphomeapi import UserService
+import pytest
+
+from .types import APIClientConnectedFactory, RunCompiledFunction
+
+
+@pytest.mark.asyncio
+async def test_scheduler_bulk_cleanup(
+    yaml_config: str,
+    run_compiled: RunCompiledFunction,
+    api_client_connected: APIClientConnectedFactory,
+) -> None:
+    """Test that bulk cleanup path is triggered when many items are cancelled."""
+
+    # Get the absolute path to the external components directory
+    external_components_path = str(
+        Path(__file__).parent / "fixtures" / "external_components"
+    )
+
+    # Replace the placeholder in the YAML config with the actual path
+    yaml_config = yaml_config.replace(
+        "EXTERNAL_COMPONENT_PATH", external_components_path
+    )
+
+    # Create a future to signal test completion
+    loop = asyncio.get_event_loop()
+    test_complete_future: asyncio.Future[None] = loop.create_future()
+    bulk_cleanup_triggered = False
+    cleanup_stats: dict[str, int] = {
+        "removed": 0,
+        "before": 0,
+        "after": 0,
+    }
+    post_cleanup_executed = 0
+
+    def on_log_line(line: str) -> None:
+        nonlocal bulk_cleanup_triggered, post_cleanup_executed
+
+        # Look for logs indicating bulk cleanup was triggered
+        # The actual cleanup happens silently, so we track the cancel operations
+        if "Successfully cancelled" in line and "timeouts" in line:
+            match = re.search(r"Successfully cancelled (\d+) timeouts", line)
+            if match and int(match.group(1)) > 10:
+                bulk_cleanup_triggered = True
+
+        # Track cleanup statistics
+        match = re.search(r"Bulk cleanup triggered: removed (\d+) items", line)
+        if match:
+            cleanup_stats["removed"] = int(match.group(1))
+
+        match = re.search(r"Items before cleanup: (\d+), after: (\d+)", line)
+        if match:
+            cleanup_stats["before"] = int(match.group(1))
+            cleanup_stats["after"] = int(match.group(2))
+
+        # Track post-cleanup timeout executions
+        if "Post-cleanup timeout" in line and "executed correctly" in line:
+            match = re.search(r"Post-cleanup timeout (\d+) executed correctly", line)
+            if match:
+                post_cleanup_executed += 1
+
+        # Check for final test completion
+        if (
+            "All post-cleanup timeouts completed - test finished" in line
+            and not test_complete_future.done()
+        ):
+            test_complete_future.set_result(None)
+
+    async with (
+        run_compiled(yaml_config, line_callback=on_log_line),
+        api_client_connected() as client,
+    ):
+        # Verify we can connect
+        device_info = await client.device_info()
+        assert device_info is not None
+        assert device_info.name == "scheduler-bulk-cleanup"
+
+        # List entities and services
+        _, services = await asyncio.wait_for(
+            client.list_entities_services(), timeout=5.0
+        )
+
+        # Find our test service
+        trigger_bulk_cleanup_service: UserService | None = None
+        for service in services:
+            if service.name == "trigger_bulk_cleanup":
+                trigger_bulk_cleanup_service = service
+                break
+
+        assert trigger_bulk_cleanup_service is not None, (
+            "trigger_bulk_cleanup service not found"
+        )
+
+        # Execute the test
+        client.execute_service(trigger_bulk_cleanup_service, {})
+
+        # Wait for test completion
+        try:
+            await asyncio.wait_for(test_complete_future, timeout=10.0)
+        except asyncio.TimeoutError:
+            pytest.fail("Bulk cleanup test timed out")
+
+        # Verify bulk cleanup was triggered
+        assert bulk_cleanup_triggered, (
+            "Bulk cleanup path was not triggered - MAX_LOGICALLY_DELETED_ITEMS threshold not reached"
+        )
+
+        # Verify cleanup statistics
+        assert cleanup_stats["removed"] > 10, (
+            f"Expected more than 10 items removed, got {cleanup_stats['removed']}"
+        )
+
+        # Verify scheduler still works after bulk cleanup
+        assert post_cleanup_executed == 5, (
+            f"Expected 5 post-cleanup timeouts to execute, but {post_cleanup_executed} executed"
+        )
diff --git a/tests/integration/test_scheduler_defer_cancel.py b/tests/integration/test_scheduler_defer_cancel.py
new file mode 100644
index 0000000000..923cf946c4
--- /dev/null
+++ b/tests/integration/test_scheduler_defer_cancel.py
@@ -0,0 +1,94 @@
+"""Test that defer() with the same name cancels previous defers."""
+
+import asyncio
+
+from aioesphomeapi import EntityState, Event, EventInfo, UserService
+import pytest
+
+from .types import APIClientConnectedFactory, RunCompiledFunction
+
+
+@pytest.mark.asyncio
+async def test_scheduler_defer_cancel(
+    yaml_config: str,
+    run_compiled: RunCompiledFunction,
+    api_client_connected: APIClientConnectedFactory,
+) -> None:
+    """Test that defer() with the same name cancels previous defers."""
+
+    async with run_compiled(yaml_config), api_client_connected() as client:
+        # Verify we can connect
+        device_info = await client.device_info()
+        assert device_info is not None
+        assert device_info.name == "scheduler-defer-cancel"
+
+        # List entities and services
+        entity_info, services = await asyncio.wait_for(
+            client.list_entities_services(), timeout=5.0
+        )
+
+        # Find our test entities
+        test_complete_entity: EventInfo | None = None
+        test_result_entity: EventInfo | None = None
+
+        for entity in entity_info:
+            if isinstance(entity, EventInfo):
+                if entity.object_id == "test_complete":
+                    test_complete_entity = entity
+                elif entity.object_id == "test_result":
+                    test_result_entity = entity
+
+        assert test_complete_entity is not None, "test_complete event not found"
+        assert test_result_entity is not None, "test_result event not found"
+
+        # Find our test service
+        test_defer_cancel_service: UserService | None = None
+        for service in services:
+            if service.name == "test_defer_cancel":
+                test_defer_cancel_service = service
+
+        assert test_defer_cancel_service is not None, (
+            "test_defer_cancel service not found"
+        )
+
+        # Get the event loop
+        loop = asyncio.get_running_loop()
+
+        # Subscribe to states
+        test_complete_future: asyncio.Future[bool] = loop.create_future()
+        test_result_future: asyncio.Future[int] = loop.create_future()
+
+        def on_state(state: EntityState) -> None:
+            if not isinstance(state, Event):
+                return
+
+            if (
+                state.key == test_complete_entity.key
+                and state.event_type == "test_finished"
+                and not test_complete_future.done()
+            ):
+                test_complete_future.set_result(True)
+                return
+
+            if state.key == test_result_entity.key and not test_result_future.done():
+                # Event type should be "defer_executed_X" where X is the defer number
+                if state.event_type.startswith("defer_executed_"):
+                    defer_num = int(state.event_type.split("_")[-1])
+                    test_result_future.set_result(defer_num)
+
+        client.subscribe_states(on_state)
+
+        # Execute the test
+        client.execute_service(test_defer_cancel_service, {})
+
+        # Wait for test completion
+        try:
+            await asyncio.wait_for(test_complete_future, timeout=10.0)
+            executed_defer = await asyncio.wait_for(test_result_future, timeout=1.0)
+        except asyncio.TimeoutError:
+            pytest.fail("Test did not complete within timeout")
+
+        # Verify that only defer 10 was executed
+        assert executed_defer == 10, (
+            f"Expected defer 10 to execute, got {executed_defer}"
+        )
diff --git a/tests/integration/test_scheduler_defer_cancel_regular.py b/tests/integration/test_scheduler_defer_cancel_regular.py
new file mode 100644
index 0000000000..57b7134feb
--- /dev/null
+++ b/tests/integration/test_scheduler_defer_cancel_regular.py
@@ -0,0 +1,90 @@
+"""Test that a deferred timeout cancels a regular timeout with the same name."""
+
+import asyncio
+
+from aioesphomeapi import UserService
+import pytest
+
+from .types import APIClientConnectedFactory, RunCompiledFunction
+
+
+@pytest.mark.asyncio
+async def test_scheduler_defer_cancels_regular(
+    yaml_config: str,
+    run_compiled: RunCompiledFunction,
+    api_client_connected: APIClientConnectedFactory,
+) -> None:
+    """Test that set_timeout(name, 0) cancels a previously scheduled set_timeout(name, delay)."""
+
+    # Create a future to signal test completion
+    loop = asyncio.get_running_loop()
+    test_complete_future: asyncio.Future[None] = loop.create_future()
+
+    # Track log messages
+    log_messages: list[str] = []
+    error_detected = False
+
+    def on_log_line(line: str) -> None:
+        nonlocal error_detected
+        if "TEST" in line:
+            log_messages.append(line)
+
+        if "ERROR: Regular timeout executed" in line:
+            error_detected = True
+
+        if "Test complete" in line and not test_complete_future.done():
+            test_complete_future.set_result(None)
+
+    async with (
+        run_compiled(yaml_config, line_callback=on_log_line),
+        api_client_connected() as client,
+    ):
+        # Verify we can connect
+        device_info = await client.device_info()
+        assert device_info is not None
+        assert device_info.name == "scheduler-defer-cancel-regular"
+
+        # List services
+        _, services = await asyncio.wait_for(
+            client.list_entities_services(), timeout=5.0
+        )
+
+        # Find our test service
+        test_service: UserService | None = None
+        for service in services:
+            if service.name == "test_defer_cancels_regular":
+                test_service = service
+                break
+
+        assert test_service is not None, "test_defer_cancels_regular service not found"
+
+        # Execute the test
+        client.execute_service(test_service, {})
+
+        # Wait for test completion
+        try:
+            await asyncio.wait_for(test_complete_future, timeout=5.0)
+        except asyncio.TimeoutError:
+            pytest.fail(f"Test timed out. Log messages: {log_messages}")
+
+        # Verify results
+        assert not error_detected, (
+            f"Regular timeout should have been cancelled but it executed! Logs: {log_messages}"
+        )
+
+        # Verify the deferred timeout executed
+        assert any(
+            "SUCCESS: Deferred timeout executed" in msg for msg in log_messages
+        ), f"Deferred timeout should have executed. Logs: {log_messages}"
+
+        # Verify the expected sequence of events
+        assert any(
+            "Starting defer cancels regular timeout test" in msg for msg in log_messages
+        )
+        assert any(
+            "Scheduled regular timeout with 100ms delay" in msg for msg in log_messages
+        )
+        assert any(
+            "Scheduled deferred timeout - should cancel regular timeout" in msg
+            for msg in log_messages
+        )
diff --git a/tests/integration/test_defer_fifo_simple.py b/tests/integration/test_scheduler_defer_fifo_simple.py
similarity index 97%
rename from tests/integration/test_defer_fifo_simple.py
rename to tests/integration/test_scheduler_defer_fifo_simple.py
index 5a62a45786..eb4058fedd 100644
--- a/tests/integration/test_defer_fifo_simple.py
+++ b/tests/integration/test_scheduler_defer_fifo_simple.py
@@ -9,7 +9,7 @@ from .types import APIClientConnectedFactory, RunCompiledFunction
 
 
 @pytest.mark.asyncio
-async def test_defer_fifo_simple(
+async def test_scheduler_defer_fifo_simple(
     yaml_config: str,
     run_compiled: RunCompiledFunction,
     api_client_connected: APIClientConnectedFactory,
@@ -20,7 +20,7 @@ async def test_defer_fifo_simple(
         # Verify we can connect
         device_info = await client.device_info()
         assert device_info is not None
-        assert device_info.name == "defer-fifo-simple"
+        assert device_info.name == "scheduler-defer-fifo-simple"
 
         # List entities and services
         entity_info, services = await asyncio.wait_for(
diff --git a/tests/integration/test_defer_stress.py b/tests/integration/test_scheduler_defer_stress.py
similarity index 97%
rename from tests/integration/test_defer_stress.py
rename to tests/integration/test_scheduler_defer_stress.py
index f63ec8d25f..d546b7132f 100644
--- a/tests/integration/test_defer_stress.py
+++ b/tests/integration/test_scheduler_defer_stress.py
@@ -11,7 +11,7 @@ from .types import APIClientConnectedFactory, RunCompiledFunction
 
 
 @pytest.mark.asyncio
-async def test_defer_stress(
+async def test_scheduler_defer_stress(
     yaml_config: str,
     run_compiled: RunCompiledFunction,
     api_client_connected: APIClientConnectedFactory,
@@ -75,7 +75,7 @@ async def test_defer_stress(
         # Verify we can connect
         device_info = await client.device_info()
         assert device_info is not None
-        assert device_info.name == "defer-stress-test"
+        assert device_info.name == "scheduler-defer-stress-test"
 
         # List entities and services
         entity_info, services = await asyncio.wait_for(
diff --git a/tests/integration/test_scheduler_heap_stress.py b/tests/integration/test_scheduler_heap_stress.py
new file mode 100644
index 0000000000..3c757bfc9d
--- /dev/null
+++ b/tests/integration/test_scheduler_heap_stress.py
@@ -0,0 +1,140 @@
+"""Stress test for heap scheduler thread safety with multiple threads."""
+
+import asyncio
+from pathlib import Path
+import re
+
+from aioesphomeapi import UserService
+import pytest
+
+from .types import APIClientConnectedFactory, RunCompiledFunction
+
+
+@pytest.mark.asyncio
+async def test_scheduler_heap_stress(
+    yaml_config: str,
+    run_compiled: RunCompiledFunction,
+    api_client_connected: APIClientConnectedFactory,
+) -> None:
+    """Test that set_timeout/set_interval doesn't crash when called rapidly from multiple threads."""
+
+    # Get the absolute path to the external components directory
+    external_components_path = str(
+        Path(__file__).parent / "fixtures" / "external_components"
+    )
+
+    # Replace the placeholder in the YAML config with the actual path
+    yaml_config = yaml_config.replace(
+        "EXTERNAL_COMPONENT_PATH", external_components_path
+    )
+
+    # Create a future to signal test completion
+    loop = asyncio.get_running_loop()
+    test_complete_future: asyncio.Future[None] = loop.create_future()
+
+    # Track executed timeouts/intervals and their order
+    executed_callbacks: set[int] = set()
+    thread_executions: dict[
+        int, list[int]
+    ] = {}  # thread_id -> list of indices in execution order
+    callback_types: dict[int, str] = {}  # callback_id -> "timeout" or "interval"
+
+    def on_log_line(line: str) -> None:
+        # Track all executed callbacks with thread and index info
+        match = re.search(
+            r"Executed (timeout|interval) (\d+) \(thread (\d+), index (\d+)\)", line
+        )
+        if not match:
+            # Also check for the completion message
+            if "All threads finished" in line and "Created 1000 callbacks" in line:
+                # Give scheduler some time to execute callbacks
+                pass
+            return
+
+        callback_type = match.group(1)
+        callback_id = int(match.group(2))
+        thread_id = int(match.group(3))
+        index = int(match.group(4))
+
+        # Only count each callback ID once (intervals might fire multiple times)
+        if callback_id not in executed_callbacks:
+            executed_callbacks.add(callback_id)
+            callback_types[callback_id] = callback_type
+
+        # Track execution order per thread
+        if thread_id not in thread_executions:
+            thread_executions[thread_id] = []
+
+        # Only append if this is a new execution for this thread
+        if index not in thread_executions[thread_id]:
+            thread_executions[thread_id].append(index)
+
+        # Check if we've executed all 1000 callbacks (0-999)
+        if len(executed_callbacks) >= 1000 and not test_complete_future.done():
+            test_complete_future.set_result(None)
+
+    async with (
+        run_compiled(yaml_config, line_callback=on_log_line),
+        api_client_connected() as client,
+    ):
+        # Verify we can connect
+        device_info = await client.device_info()
+        assert device_info is not None
+        assert device_info.name == "scheduler-heap-stress-test"
+
+        # List entities and services
+        _, services = await asyncio.wait_for(
+            client.list_entities_services(), timeout=5.0
+        )
+
+        # Find our test service
+        run_stress_test_service: UserService | None = None
+        for service in services:
+            if service.name == "run_heap_stress_test":
+                run_stress_test_service = service
+                break
+
+        assert run_stress_test_service is not None, (
+            "run_heap_stress_test service not found"
+        )
+
+        # Call the run_heap_stress_test service to start the test
+        client.execute_service(run_stress_test_service, {})
+
+        # Wait for all callbacks to execute (should be quick, but give more time for scheduling)
+        try:
+            await asyncio.wait_for(test_complete_future, timeout=60.0)
+        except asyncio.TimeoutError:
+            # Report how many we got
+            pytest.fail(
+                f"Stress test timed out. Only {len(executed_callbacks)} of "
+                f"1000 callbacks executed. Missing IDs: "
+                f"{sorted(set(range(1000)) - executed_callbacks)[:10]}..."
+            )
+
+        # Verify all callbacks executed
+        assert len(executed_callbacks) == 1000, (
+            f"Expected 1000 callbacks, got {len(executed_callbacks)}"
+        )
+
+        # Verify we have all IDs from 0-999
+        expected_ids = set(range(1000))
+        missing_ids = expected_ids - executed_callbacks
+        assert not missing_ids, f"Missing callback IDs: {sorted(missing_ids)}"
+
+        # Verify we have a mix of timeouts and intervals
+        timeout_count = sum(1 for t in callback_types.values() if t == "timeout")
+        interval_count = sum(1 for t in callback_types.values() if t == "interval")
+        assert timeout_count > 0, "No timeouts were executed"
+        assert interval_count > 0, "No intervals were executed"
+
+        # Verify each thread executed callbacks
+        for thread_id, indices in thread_executions.items():
+            assert len(indices) == 100, (
+                f"Thread {thread_id} executed {len(indices)} callbacks, expected 100"
+            )
+        # Total should be 1000 callbacks
+        total_callbacks = timeout_count + interval_count
+        assert total_callbacks == 1000, (
+            f"Expected 1000 total callbacks but got {total_callbacks}"
+        )
diff --git a/tests/integration/test_scheduler_rapid_cancellation.py b/tests/integration/test_scheduler_rapid_cancellation.py
new file mode 100644
index 0000000000..90577f36f1
--- /dev/null
+++ b/tests/integration/test_scheduler_rapid_cancellation.py
@@ -0,0 +1,142 @@
+"""Rapid cancellation test - schedule and immediately cancel timeouts with string names."""
+
+import asyncio
+from pathlib import Path
+import re
+
+from aioesphomeapi import UserService
+import pytest
+
+from .types import APIClientConnectedFactory, RunCompiledFunction
+
+
+@pytest.mark.asyncio
+async def test_scheduler_rapid_cancellation(
+    yaml_config: str,
+    run_compiled: RunCompiledFunction,
+    api_client_connected: APIClientConnectedFactory,
+) -> None:
+    """Test rapid schedule/cancel cycles that might expose race conditions."""
+
+    # Get the absolute path to the external components directory
+    external_components_path = str(
+        Path(__file__).parent / "fixtures" / "external_components"
+    )
+
+    # Replace the placeholder in the YAML config with the actual path
+    yaml_config = yaml_config.replace(
+        "EXTERNAL_COMPONENT_PATH", external_components_path
+    )
+
+    # Create a future to signal test completion
+    loop = asyncio.get_running_loop()
+    test_complete_future: asyncio.Future[None] = loop.create_future()
+
+    # Track test progress
+    test_stats = {
+        "log_count": 0,
+        "errors": [],
+        "summary_scheduled": None,
+        "final_scheduled": 0,
+        "final_executed": 0,
+        "final_implicit_cancellations": 0,
+    }
+
+    def on_log_line(line: str) -> None:
+        # Count log lines
+        test_stats["log_count"] += 1
+
+        # Check for errors (only ERROR level, not WARN)
+        if "ERROR" in line:
+            test_stats["errors"].append(line)
+
+        # Parse summary statistics
+        if "All threads completed. Scheduled:" in line:
+            # Extract the scheduled count from the summary
+            if match := re.search(r"Scheduled: (\d+)", line):
+                test_stats["summary_scheduled"] = int(match.group(1))
+        elif "Total scheduled:" in line:
+            if match := re.search(r"Total scheduled: (\d+)", line):
+                test_stats["final_scheduled"] = int(match.group(1))
+        elif "Total executed:" in line:
+            if match := re.search(r"Total executed: (\d+)", line):
+                test_stats["final_executed"] = int(match.group(1))
+        elif "Implicit cancellations (replaced):" in line:
+            if match := re.search(r"Implicit cancellations \(replaced\): (\d+)", line):
+                test_stats["final_implicit_cancellations"] = int(match.group(1))
+
+        # Check for crash indicators
+        if any(
+            indicator in line.lower()
+            for indicator in ["segfault", "abort", "assertion", "heap corruption"]
+        ):
+            if not test_complete_future.done():
+                test_complete_future.set_exception(Exception(f"Crash detected: {line}"))
+            return
+
+        # Check for completion - wait for final message after all stats are logged
+        if (
+            "Test finished - all statistics reported" in line
+            and not test_complete_future.done()
+        ):
+            test_complete_future.set_result(None)
+
+    async with (
+        run_compiled(yaml_config, line_callback=on_log_line),
+        api_client_connected() as client,
+    ):
+        # Verify we can connect
+        device_info = await client.device_info()
+        assert device_info is not None
+        assert device_info.name == "sched-rapid-cancel-test"
+
+        # List entities and services
+        _, services = await asyncio.wait_for(
+            client.list_entities_services(), timeout=5.0
+        )
+
+        # Find our test service
+        run_test_service: UserService | None = None
+        for service in services:
+            if service.name == "run_rapid_cancellation_test":
+                run_test_service = service
+                break
+
+        assert run_test_service is not None, (
+            "run_rapid_cancellation_test service not found"
+        )
+
+        # Call the service to start the test
+        client.execute_service(run_test_service, {})
+
+        # Wait for test to complete with timeout
+        try:
+            await asyncio.wait_for(test_complete_future, timeout=10.0)
+        except asyncio.TimeoutError:
+            pytest.fail(f"Test timed out. Stats: {test_stats}")
+
+        # Check for any errors
+        assert len(test_stats["errors"]) == 0, (
+            f"Errors detected: {test_stats['errors']}"
+        )
+
+        # Check that we received log messages
+        assert test_stats["log_count"] > 0, "No log messages received"
+
+        # Check the summary line to verify all threads scheduled their operations
+        assert test_stats["summary_scheduled"] == 400, (
+            f"Expected summary to show 400 scheduled operations but got {test_stats['summary_scheduled']}"
+        )
+
+        # Check final statistics
+        assert test_stats["final_scheduled"] == 400, (
+            f"Expected final stats to show 400 scheduled but got {test_stats['final_scheduled']}"
+        )
+
+        assert test_stats["final_executed"] == 10, (
+            f"Expected final stats to show 10 executed but got {test_stats['final_executed']}"
+        )
+
+        assert test_stats["final_implicit_cancellations"] == 390, (
+            f"Expected final stats to show 390 implicit cancellations but got {test_stats['final_implicit_cancellations']}"
+        )
diff --git a/tests/integration/test_scheduler_recursive_timeout.py b/tests/integration/test_scheduler_recursive_timeout.py
new file mode 100644
index 0000000000..c015978e15
--- /dev/null
+++ b/tests/integration/test_scheduler_recursive_timeout.py
@@ -0,0 +1,101 @@
+"""Test for recursive timeout scheduling - scheduling timeouts from within timeout callbacks."""
+
+import asyncio
+from pathlib import Path
+
+from aioesphomeapi import UserService
+import pytest
+
+from .types import APIClientConnectedFactory, RunCompiledFunction
+
+
+@pytest.mark.asyncio
+async def test_scheduler_recursive_timeout(
+    yaml_config: str,
+    run_compiled: RunCompiledFunction,
+    api_client_connected: APIClientConnectedFactory,
+) -> None:
+    """Test that scheduling timeouts from within timeout callbacks works correctly."""
+
+    # Get the absolute path to the external components directory
+    external_components_path = str(
+        Path(__file__).parent / "fixtures" / "external_components"
+    )
+
+    # Replace the placeholder in the YAML config with the actual path
+    yaml_config = yaml_config.replace(
+        "EXTERNAL_COMPONENT_PATH", external_components_path
+    )
+
+    # Create a future to signal test completion
+    loop = asyncio.get_running_loop()
+    test_complete_future: asyncio.Future[None] = loop.create_future()
+
+    # Track execution sequence
+    execution_sequence: list[str] = []
+    expected_sequence = [
+        "initial_timeout",
+        "nested_timeout_1",
+        "nested_timeout_2",
+        "test_complete",
+    ]
+
+    def on_log_line(line: str) -> None:
+        # Track execution sequence
+        if "Executing initial timeout" in line:
+            execution_sequence.append("initial_timeout")
+        elif "Executing nested timeout 1" in line:
+            execution_sequence.append("nested_timeout_1")
+        elif "Executing nested timeout 2" in line:
+            execution_sequence.append("nested_timeout_2")
+        elif "Recursive timeout test complete" in line:
+            execution_sequence.append("test_complete")
+            if not test_complete_future.done():
+                test_complete_future.set_result(None)
+
+    async with (
+        run_compiled(yaml_config, line_callback=on_log_line),
+        api_client_connected() as client,
+    ):
+        # Verify we can connect
+        device_info = await client.device_info()
+        assert device_info is not None
+        assert device_info.name == "sched-recursive-timeout"
+
+        # List entities and services
+        _, services = await asyncio.wait_for(
+            client.list_entities_services(), timeout=5.0
+        )
+
+        # Find our test service
+        run_test_service: UserService | None = None
+        for service in services:
+            if service.name == "run_recursive_timeout_test":
+                run_test_service = service
+                break
+
+        assert run_test_service is not None, (
+            "run_recursive_timeout_test service not found"
+        )
+
+        # Call the service to start the test
+        client.execute_service(run_test_service, {})
+
+        # Wait for test to complete
+        try:
+            await asyncio.wait_for(test_complete_future, timeout=10.0)
+        except asyncio.TimeoutError:
+            pytest.fail(
+                f"Recursive timeout test timed out. Got sequence: {execution_sequence}"
+            )
+
+        # Verify execution sequence
+        assert execution_sequence == expected_sequence, (
+            f"Execution sequence mismatch. Expected {expected_sequence}, "
+            f"got {execution_sequence}"
+        )
+
+        # Verify we got exactly 4 events (Initial + Level 1 + Level 2 + Complete)
+        assert len(execution_sequence) == 4, (
+            f"Expected 4 events but got {len(execution_sequence)}"
+        )
diff --git a/tests/integration/test_scheduler_simultaneous_callbacks.py b/tests/integration/test_scheduler_simultaneous_callbacks.py
new file mode 100644
index 0000000000..f5120ce4ce
--- /dev/null
+++ b/tests/integration/test_scheduler_simultaneous_callbacks.py
@@ -0,0 +1,123 @@
+"""Simultaneous callbacks test - schedule many callbacks for the same time from multiple threads."""
+
+import asyncio
+from pathlib import Path
+import re
+
+from aioesphomeapi import UserService
+import pytest
+
+from .types import APIClientConnectedFactory, RunCompiledFunction
+
+
+@pytest.mark.asyncio
+async def test_scheduler_simultaneous_callbacks(
+    yaml_config: str,
+    run_compiled: RunCompiledFunction,
+    api_client_connected: APIClientConnectedFactory,
+) -> None:
+    """Test scheduling many callbacks for the exact same time from multiple threads."""
+
+    # Get the absolute path to the external components directory
+    external_components_path = str(
+        Path(__file__).parent / "fixtures" / "external_components"
+    )
+
+    # Replace the placeholder in the YAML config with the actual path
+    yaml_config = yaml_config.replace(
+        "EXTERNAL_COMPONENT_PATH", external_components_path
+    )
+
+    # Create a future to signal test completion
+    loop = asyncio.get_running_loop()
+    test_complete_future: asyncio.Future[None] = loop.create_future()
+
+    # Track test progress
+    test_stats = {
+        "scheduled": 0,
+        "executed": 0,
+        "expected": 1000,  # 10 threads * 100 callbacks
+        "errors": [],
+    }
+
+    def on_log_line(line: str) -> None:
+        # Track operations
+        if "Scheduled callback" in line:
+            test_stats["scheduled"] += 1
+        elif "Callback executed" in line:
+            test_stats["executed"] += 1
+        elif "ERROR" in line:
+            test_stats["errors"].append(line)
+
+        # Check for crash indicators
+        if any(
+            indicator in line.lower()
+            for indicator in ["segfault", "abort", "assertion", "heap corruption"]
+        ):
+            if not test_complete_future.done():
+                test_complete_future.set_exception(Exception(f"Crash detected: {line}"))
+            return
+
+        # Check for completion with final count
+        if "Final executed count:" in line:
+            # Extract number from log line like: "[07:59:47][I][simultaneous_callbacks:093]: Simultaneous callbacks test complete. Final executed count: 1000"
+            match = re.search(r"Final executed count:\s*(\d+)", line)
+            if match:
+                test_stats["final_count"] = int(match.group(1))
+
+        # Check for completion
+        if (
+            "Simultaneous callbacks test complete" in line
+            and not test_complete_future.done()
+        ):
+            test_complete_future.set_result(None)
+
+    async with (
+        run_compiled(yaml_config, line_callback=on_log_line),
+        api_client_connected() as client,
+    ):
+        # Verify we can connect
+        device_info = await client.device_info()
+        assert device_info is not None
+        assert device_info.name == "sched-simul-callbacks-test"
+
+        # List entities and services
+        _, services = await asyncio.wait_for(
+            client.list_entities_services(), timeout=5.0
+        )
+
+        # Find our test service
+        run_test_service: UserService | None = None
+        for service in services:
+            if service.name == "run_simultaneous_callbacks_test":
+                run_test_service = service
+                break
+
+        assert run_test_service is not None, (
+            "run_simultaneous_callbacks_test service not found"
+        )
+
+        # Call the service to start the test
+        client.execute_service(run_test_service, {})
+
+        # Wait for test to complete
+        try:
+            await asyncio.wait_for(test_complete_future, timeout=30.0)
+        except asyncio.TimeoutError:
+            pytest.fail(f"Simultaneous callbacks test timed out. Stats: {test_stats}")
+
+        # Check for any errors
+        assert len(test_stats["errors"]) == 0, (
+            f"Errors detected: {test_stats['errors']}"
+        )
+
+        # Verify all callbacks executed using the final count from C++
+        final_count = test_stats.get("final_count", 0)
+        assert final_count == test_stats["expected"], (
+            f"Expected {test_stats['expected']} callbacks, but only {final_count} executed"
+        )
+
+        # The final_count is the authoritative count from the C++ component
+        assert final_count == 1000, (
+            f"Expected 1000 executed callbacks but got {final_count}"
+        )
diff --git a/tests/integration/test_scheduler_string_lifetime.py b/tests/integration/test_scheduler_string_lifetime.py
new file mode 100644
index 0000000000..4d77abd954
--- /dev/null
+++ b/tests/integration/test_scheduler_string_lifetime.py
@@ -0,0 +1,169 @@
+"""String lifetime test - verify scheduler handles string destruction correctly."""
+
+import asyncio
+from pathlib import Path
+import re
+
+import pytest
+
+from .types import APIClientConnectedFactory, RunCompiledFunction
+
+
+@pytest.mark.asyncio
+async def test_scheduler_string_lifetime(
+    yaml_config: str,
+    run_compiled: RunCompiledFunction,
+    api_client_connected: APIClientConnectedFactory,
+) -> None:
+    """Test that scheduler correctly handles string lifetimes when strings go out of scope."""
+
+    # Get the absolute path to the external components directory
+    external_components_path = str(
+        Path(__file__).parent / "fixtures" / "external_components"
+    )
+
+    # Replace the placeholder in the YAML config with the actual path
+    yaml_config = yaml_config.replace(
+        "EXTERNAL_COMPONENT_PATH", external_components_path
+    )
+
+    # Create events for synchronization
+    test1_complete = asyncio.Event()
+    test2_complete = asyncio.Event()
+    test3_complete = asyncio.Event()
+    test4_complete = asyncio.Event()
+    test5_complete = asyncio.Event()
+    all_tests_complete = asyncio.Event()
+
+    # Track test progress
+    test_stats = {
+        "tests_passed": 0,
+        "tests_failed": 0,
+        "errors": [],
+        "current_test": None,
+        "test_callbacks_executed": {},
+    }
+
+    def on_log_line(line: str) -> None:
+        # Track test-specific events
+        if "Test 1 complete" in line:
+            test1_complete.set()
+        elif "Test 2 complete" in line:
+            test2_complete.set()
+        elif "Test 3 complete" in line:
+            test3_complete.set()
+        elif "Test 4 complete" in line:
+            test4_complete.set()
+        elif "Test 5 complete" in line:
+            test5_complete.set()
+
+        # Track individual callback executions
+        callback_match = re.search(r"Callback '(.+?)' executed", line)
+        if callback_match:
+            callback_name = callback_match.group(1)
+            test_stats["test_callbacks_executed"][callback_name] = True
+
+        # Track test results from the C++ test output
+        if "Tests passed:" in line and "string_lifetime" in line:
+            # Extract the number from "Tests passed: 32"
+            match = re.search(r"Tests passed:\s*(\d+)", line)
+            if match:
+                test_stats["tests_passed"] = int(match.group(1))
+        elif "Tests failed:" in line and "string_lifetime" in line:
+            match = re.search(r"Tests failed:\s*(\d+)", line)
+            if match:
+                test_stats["tests_failed"] = int(match.group(1))
+        elif "ERROR" in line and "string_lifetime" in line:
+            test_stats["errors"].append(line)
+
+        # Check for memory corruption indicators
+        if any(
+            indicator in line.lower()
+            for indicator in [
+                "use after free",
+                "heap corruption",
+                "segfault",
+                "abort",
+                "assertion",
+                "sanitizer",
+                "bad memory",
+                "invalid pointer",
+            ]
+        ):
+            pytest.fail(f"Memory corruption detected: {line}")
+
+        # Check for completion
+        if "String lifetime tests complete" in line:
+            all_tests_complete.set()
+
+    async with (
+        run_compiled(yaml_config, line_callback=on_log_line),
+        api_client_connected() as client,
+    ):
+        # Verify we can connect
+        device_info = await client.device_info()
+        assert device_info is not None
+        assert device_info.name == "scheduler-string-lifetime-test"
+
+        # List entities and services
+        _, services = await asyncio.wait_for(
+            client.list_entities_services(), timeout=5.0
+        )
+
+        # Find our test services
+        test_services = {}
+        for service in services:
+            if service.name == "run_test1":
+                test_services["test1"] = service
+            elif service.name == "run_test2":
+                test_services["test2"] = service
+            elif service.name == "run_test3":
+                test_services["test3"] = service
+            elif service.name == "run_test4":
+                test_services["test4"] = service
+            elif service.name == "run_test5":
+                test_services["test5"] = service
+            elif service.name == "run_final_check":
+                test_services["final"] = service
+
+        # Ensure all services are found
+        required_services = ["test1", "test2", "test3", "test4", "test5", "final"]
+        for service_name in required_services:
+            assert service_name in test_services, f"{service_name} service not found"
+
+        # Run tests sequentially, waiting for each to complete
+        try:
+            # Test 1
+            client.execute_service(test_services["test1"], {})
+            await asyncio.wait_for(test1_complete.wait(), timeout=5.0)
+
+            # Test 2
+            client.execute_service(test_services["test2"], {})
+            await asyncio.wait_for(test2_complete.wait(), timeout=5.0)
+
+            # Test 3
+            client.execute_service(test_services["test3"], {})
+            await asyncio.wait_for(test3_complete.wait(), timeout=5.0)
+
+            # Test 4
+            client.execute_service(test_services["test4"], {})
+            await asyncio.wait_for(test4_complete.wait(), timeout=5.0)
+
+            # Test 5
+            client.execute_service(test_services["test5"], {})
+            await asyncio.wait_for(test5_complete.wait(), timeout=5.0)
+
+            # Final check
+            client.execute_service(test_services["final"], {})
+            await asyncio.wait_for(all_tests_complete.wait(), timeout=5.0)
+
+        except asyncio.TimeoutError:
+            pytest.fail(f"String lifetime test timed out. Stats: {test_stats}")
+
+        # Check for any errors
+        assert test_stats["tests_failed"] == 0, f"Tests failed: {test_stats['errors']}"
+
+        # Verify we had the expected number of passing tests
+        assert test_stats["tests_passed"] == 30, (
+            f"Expected exactly 30 tests to pass, but got {test_stats['tests_passed']}"
+        )
diff --git a/tests/integration/test_scheduler_string_name_stress.py b/tests/integration/test_scheduler_string_name_stress.py
new file mode 100644
index 0000000000..3045842223
--- /dev/null
+++ b/tests/integration/test_scheduler_string_name_stress.py
@@ -0,0 +1,116 @@
+"""Stress test for heap scheduler with std::string names from multiple threads."""
+
+import asyncio
+from pathlib import Path
+import re
+
+from aioesphomeapi import UserService
+import pytest
+
+from .types import APIClientConnectedFactory, RunCompiledFunction
+
+
+@pytest.mark.asyncio
+async def test_scheduler_string_name_stress(
+    yaml_config: str,
+    run_compiled: RunCompiledFunction,
+    api_client_connected: APIClientConnectedFactory,
+) -> None:
+    """Test that set_timeout/set_interval with std::string names doesn't crash when called from multiple threads."""
+
+    # Get the absolute path to the external components directory
+    external_components_path = str(
+        Path(__file__).parent / "fixtures" / "external_components"
+    )
+
+    # Replace the placeholder in the YAML config with the actual path
+    yaml_config = yaml_config.replace(
+        "EXTERNAL_COMPONENT_PATH", external_components_path
+    )
+
+    # Create a future to signal test completion
+    loop = asyncio.get_running_loop()
+    test_complete_future: asyncio.Future[None] = loop.create_future()
+
+    # Track executed callbacks and any crashes
+    executed_callbacks: set[int] = set()
+    error_messages: list[str] = []
+
+    def on_log_line(line: str) -> None:
+        # Check for crash indicators
+        if any(
+            indicator in line.lower()
+            for indicator in [
+                "segfault",
+                "abort",
+                "assertion",
+                "heap corruption",
+                "use after free",
+            ]
+        ):
+            error_messages.append(line)
+            if not test_complete_future.done():
+                test_complete_future.set_exception(Exception(f"Crash detected: {line}"))
+            return
+
+        # Track executed callbacks
+        match = re.search(r"Executed string-named callback (\d+)", line)
+        if match:
+            callback_id = int(match.group(1))
+            executed_callbacks.add(callback_id)
+
+        # Check for completion
+        if (
+            "String name stress test complete" in line
+            and not test_complete_future.done()
+        ):
+            test_complete_future.set_result(None)
+
+    async with (
+        run_compiled(yaml_config, line_callback=on_log_line),
+        api_client_connected() as client,
+    ):
+        # Verify we can connect
+        device_info = await client.device_info()
+        assert device_info is not None
+        assert device_info.name == "sched-string-name-stress"
+
+        # List entities and services
+        _, services = await asyncio.wait_for(
+            client.list_entities_services(), timeout=5.0
+        )
+
+        # Find our test service
+        run_stress_test_service: UserService | None = None
+        for service in services:
+            if service.name == "run_string_name_stress_test":
+                run_stress_test_service = service
+                break
+
+        assert run_stress_test_service is not None, (
+            "run_string_name_stress_test service not found"
+        )
+
+        # Call the service to start the test
+        client.execute_service(run_stress_test_service, {})
+
+        # Wait for test to complete or crash
+        try:
+            await asyncio.wait_for(test_complete_future, timeout=30.0)
+        except asyncio.TimeoutError:
+            pytest.fail(
+                f"String name stress test timed out. Executed {len(executed_callbacks)} callbacks. "
+                f"This might indicate a deadlock."
+            )
+
+        # Verify no errors occurred (crashes already handled by exception)
+        assert not error_messages, f"Errors detected during test: {error_messages}"
+
+        # Verify we executed all 1000 callbacks (10 threads × 100 callbacks each)
+        assert len(executed_callbacks) == 1000, (
+            f"Expected 1000 callbacks but got {len(executed_callbacks)}"
+        )
+
+        # Verify each callback ID was executed exactly once
+        for i in range(1000):
+            assert i in executed_callbacks, f"Callback {i} was not executed"