diff --git a/usermods/BH1750_v2/BH1750_v2.cpp b/usermods/BH1750_v2/BH1750_v2.cpp
index f033f39ed..3800e915d 100644
--- a/usermods/BH1750_v2/BH1750_v2.cpp
+++ b/usermods/BH1750_v2/BH1750_v2.cpp
@@ -2,244 +2,176 @@
 #warning **** Included USERMOD_BH1750 ****
 
 #include "wled.h"
-#include <BH1750.h>
+#include "BH1750_v2.h"
 
 #ifdef WLED_DISABLE_MQTT
 #error "This user mod requires MQTT to be enabled."
 #endif
 
-// the max frequency to check photoresistor, 10 seconds
-#ifndef USERMOD_BH1750_MAX_MEASUREMENT_INTERVAL
-#define USERMOD_BH1750_MAX_MEASUREMENT_INTERVAL 10000
-#endif
-
-// the min frequency to check photoresistor, 500 ms
-#ifndef USERMOD_BH1750_MIN_MEASUREMENT_INTERVAL
-#define USERMOD_BH1750_MIN_MEASUREMENT_INTERVAL 500
-#endif
-
-// how many seconds after boot to take first measurement, 10 seconds
-#ifndef USERMOD_BH1750_FIRST_MEASUREMENT_AT
-#define USERMOD_BH1750_FIRST_MEASUREMENT_AT 10000
-#endif
-
-// only report if difference grater than offset value
-#ifndef USERMOD_BH1750_OFFSET_VALUE
-#define USERMOD_BH1750_OFFSET_VALUE 1
-#endif
-
-class Usermod_BH1750 : public Usermod
+static bool checkBoundSensor(float newValue, float prevValue, float maxDiff)
 {
-private:
-  int8_t offset = USERMOD_BH1750_OFFSET_VALUE;
+  return isnan(prevValue) || newValue <= prevValue - maxDiff || newValue >= prevValue + maxDiff || (newValue == 0.0 && prevValue > 0.0);
+}
 
-  unsigned long maxReadingInterval = USERMOD_BH1750_MAX_MEASUREMENT_INTERVAL;
-  unsigned long minReadingInterval = USERMOD_BH1750_MIN_MEASUREMENT_INTERVAL;
-  unsigned long lastMeasurement = UINT32_MAX - (USERMOD_BH1750_MAX_MEASUREMENT_INTERVAL - USERMOD_BH1750_FIRST_MEASUREMENT_AT);
-  unsigned long lastSend = UINT32_MAX - (USERMOD_BH1750_MAX_MEASUREMENT_INTERVAL - USERMOD_BH1750_FIRST_MEASUREMENT_AT);
-  // flag to indicate we have finished the first readLightLevel call
-  // allows this library to report to the user how long until the first
-  // measurement
-  bool getLuminanceComplete = false;
+void Usermod_BH1750::_mqttInitialize()
+{
+  mqttLuminanceTopic = String(mqttDeviceTopic) + F("/brightness");
 
-  // flag set at startup
-  bool enabled = true;
+  if (HomeAssistantDiscovery) _createMqttSensor(F("Brightness"), mqttLuminanceTopic, F("Illuminance"), F(" lx"));
+}
 
-  // strings to reduce flash memory usage (used more than twice)
-  static const char _name[];
-  static const char _enabled[];
-  static const char _maxReadInterval[];
-  static const char _minReadInterval[];
-  static const char _offset[];
-  static const char _HomeAssistantDiscovery[];
-
-  bool initDone = false;
-  bool sensorFound = false;
-
-  // Home Assistant and MQTT  
-  String mqttLuminanceTopic;
-  bool mqttInitialized = false;
-  bool HomeAssistantDiscovery = true; // Publish Home Assistant Discovery messages
-
-  BH1750 lightMeter;
-  float lastLux = -1000;
-
-  bool checkBoundSensor(float newValue, float prevValue, float maxDiff)
-  {
-    return isnan(prevValue) || newValue <= prevValue - maxDiff || newValue >= prevValue + maxDiff || (newValue == 0.0 && prevValue > 0.0);
-  }
+// Create an MQTT Sensor for Home Assistant Discovery purposes, this includes a pointer to the topic that is published to in the Loop.
+void Usermod_BH1750::_createMqttSensor(const String &name, const String &topic, const String &deviceClass, const String &unitOfMeasurement)
+{
+  String t = String(F("homeassistant/sensor/")) + mqttClientID + F("/") + name + F("/config");
   
-  // set up Home Assistant discovery entries
-  void _mqttInitialize()
-  {
-    mqttLuminanceTopic = String(mqttDeviceTopic) + F("/brightness");
+  StaticJsonDocument<600> doc;
+  
+  doc[F("name")] = String(serverDescription) + " " + name;
+  doc[F("state_topic")] = topic;
+  doc[F("unique_id")] = String(mqttClientID) + name;
+  if (unitOfMeasurement != "")
+    doc[F("unit_of_measurement")] = unitOfMeasurement;
+  if (deviceClass != "")
+    doc[F("device_class")] = deviceClass;
+  doc[F("expire_after")] = 1800;
 
-    if (HomeAssistantDiscovery) _createMqttSensor(F("Brightness"), mqttLuminanceTopic, F("Illuminance"), F(" lx"));
+  JsonObject device = doc.createNestedObject(F("device")); // attach the sensor to the same device
+  device[F("name")] = serverDescription;
+  device[F("identifiers")] = "wled-sensor-" + String(mqttClientID);
+  device[F("manufacturer")] = F(WLED_BRAND);
+  device[F("model")] = F(WLED_PRODUCT_NAME);
+  device[F("sw_version")] = versionString;
+
+  String temp;
+  serializeJson(doc, temp);
+  DEBUG_PRINTLN(t);
+  DEBUG_PRINTLN(temp);
+
+  mqtt->publish(t.c_str(), 0, true, temp.c_str());
+}
+
+void Usermod_BH1750::setup()
+{
+  if (i2c_scl<0 || i2c_sda<0) { enabled = false; return; }
+  sensorFound = lightMeter.begin();
+  initDone = true;
+}
+
+void Usermod_BH1750::loop()
+{
+  if ((!enabled) || strip.isUpdating())
+    return;
+
+  unsigned long now = millis();
+
+  // check to see if we are due for taking a measurement
+  // lastMeasurement will not be updated until the conversion
+  // is complete the the reading is finished
+  if (now - lastMeasurement < minReadingInterval)
+  {
+    return;
   }
 
-  // Create an MQTT Sensor for Home Assistant Discovery purposes, this includes a pointer to the topic that is published to in the Loop.
-  void _createMqttSensor(const String &name, const String &topic, const String &deviceClass, const String &unitOfMeasurement)
+  bool shouldUpdate = now - lastSend > maxReadingInterval;
+
+  float lux = lightMeter.readLightLevel();
+  lastMeasurement = millis();
+  getLuminanceComplete = true;
+
+  if (shouldUpdate || checkBoundSensor(lux, lastLux, offset))
   {
-    String t = String(F("homeassistant/sensor/")) + mqttClientID + F("/") + name + F("/config");
-    
-    StaticJsonDocument<600> doc;
-    
-    doc[F("name")] = String(serverDescription) + " " + name;
-    doc[F("state_topic")] = topic;
-    doc[F("unique_id")] = String(mqttClientID) + name;
-    if (unitOfMeasurement != "")
-      doc[F("unit_of_measurement")] = unitOfMeasurement;
-    if (deviceClass != "")
-      doc[F("device_class")] = deviceClass;
-    doc[F("expire_after")] = 1800;
+    lastLux = lux;
+    lastSend = millis();
 
-    JsonObject device = doc.createNestedObject(F("device")); // attach the sensor to the same device
-    device[F("name")] = serverDescription;
-    device[F("identifiers")] = "wled-sensor-" + String(mqttClientID);
-    device[F("manufacturer")] = F(WLED_BRAND);
-    device[F("model")] = F(WLED_PRODUCT_NAME);
-    device[F("sw_version")] = versionString;
-
-    String temp;
-    serializeJson(doc, temp);
-    DEBUG_PRINTLN(t);
-    DEBUG_PRINTLN(temp);
-
-    mqtt->publish(t.c_str(), 0, true, temp.c_str());
+    if (WLED_MQTT_CONNECTED)
+    {
+      if (!mqttInitialized)
+        {
+          _mqttInitialize();
+          mqttInitialized = true;
+        }
+      mqtt->publish(mqttLuminanceTopic.c_str(), 0, true, String(lux).c_str());
+      DEBUG_PRINTLN(F("Brightness: ") + String(lux) + F("lx"));
+    }
+    else
+    {
+      DEBUG_PRINTLN(F("Missing MQTT connection. Not publishing data"));
+    }
   }
+}
 
-public:
-  void setup()
-  {
-    if (i2c_scl<0 || i2c_sda<0) { enabled = false; return; }
-    sensorFound = lightMeter.begin();
-    initDone = true;
-  }
 
-  void loop()
-  {
-    if ((!enabled) || strip.isUpdating())
+void Usermod_BH1750::addToJsonInfo(JsonObject &root)
+{
+  JsonObject user = root[F("u")];
+  if (user.isNull())
+    user = root.createNestedObject(F("u"));
+
+  JsonArray lux_json = user.createNestedArray(F("Luminance"));
+  if (!enabled) {
+    lux_json.add(F("disabled"));
+  } else if (!sensorFound) {
+      // if no sensor 
+      lux_json.add(F("BH1750 "));
+      lux_json.add(F("Not Found"));
+  } else if (!getLuminanceComplete) {
+    // if we haven't read the sensor yet, let the user know
+      // that we are still waiting for the first measurement
+      lux_json.add((USERMOD_BH1750_FIRST_MEASUREMENT_AT - millis()) / 1000);
+      lux_json.add(F(" sec until read"));
       return;
-
-    unsigned long now = millis();
-
-    // check to see if we are due for taking a measurement
-    // lastMeasurement will not be updated until the conversion
-    // is complete the the reading is finished
-    if (now - lastMeasurement < minReadingInterval)
-    {
-      return;
-    }
-
-    bool shouldUpdate = now - lastSend > maxReadingInterval;
-
-    float lux = lightMeter.readLightLevel();
-    lastMeasurement = millis();
-    getLuminanceComplete = true;
-
-    if (shouldUpdate || checkBoundSensor(lux, lastLux, offset))
-    {
-      lastLux = lux;
-      lastSend = millis();
-#ifndef WLED_DISABLE_MQTT
-      if (WLED_MQTT_CONNECTED)
-      {
-        if (!mqttInitialized)
-          {
-            _mqttInitialize();
-            mqttInitialized = true;
-          }
-        mqtt->publish(mqttLuminanceTopic.c_str(), 0, true, String(lux).c_str());
-        DEBUG_PRINTLN(F("Brightness: ") + String(lux) + F("lx"));
-      }
-      else
-      {
-        DEBUG_PRINTLN(F("Missing MQTT connection. Not publishing data"));
-      }
-#endif
-    }
+  } else {
+    lux_json.add(lastLux);
+    lux_json.add(F(" lx"));
   }
+}
 
-  inline float getIlluminance() {
-    return (float)lastLux;
-  }
+// (called from set.cpp) stores persistent properties to cfg.json
+void Usermod_BH1750::addToConfig(JsonObject &root)
+{
+  // we add JSON object.
+  JsonObject top = root.createNestedObject(FPSTR(_name)); // usermodname
+  top[FPSTR(_enabled)] = enabled;
+  top[FPSTR(_maxReadInterval)] = maxReadingInterval;
+  top[FPSTR(_minReadInterval)] = minReadingInterval;
+  top[FPSTR(_HomeAssistantDiscovery)] = HomeAssistantDiscovery;
+  top[FPSTR(_offset)] = offset;
 
-  void addToJsonInfo(JsonObject &root)
+  DEBUG_PRINTLN(F("BH1750 config saved."));
+}
+
+// called before setup() to populate properties from values stored in cfg.json
+bool Usermod_BH1750::readFromConfig(JsonObject &root)
+{
+  // we look for JSON object.
+  JsonObject top = root[FPSTR(_name)];
+  if (top.isNull())
   {
-    JsonObject user = root[F("u")];
-    if (user.isNull())
-      user = root.createNestedObject(F("u"));
-
-    JsonArray lux_json = user.createNestedArray(F("Luminance"));
-    if (!enabled) {
-      lux_json.add(F("disabled"));
-    } else if (!sensorFound) {
-        // if no sensor 
-        lux_json.add(F("BH1750 "));
-        lux_json.add(F("Not Found"));
-    } else if (!getLuminanceComplete) {
-      // if we haven't read the sensor yet, let the user know
-        // that we are still waiting for the first measurement
-        lux_json.add((USERMOD_BH1750_FIRST_MEASUREMENT_AT - millis()) / 1000);
-        lux_json.add(F(" sec until read"));
-        return;
-    } else {
-      lux_json.add(lastLux);
-      lux_json.add(F(" lx"));
-    }
-  }
-
-  // (called from set.cpp) stores persistent properties to cfg.json
-  void addToConfig(JsonObject &root)
-  {
-    // we add JSON object.
-    JsonObject top = root.createNestedObject(FPSTR(_name)); // usermodname
-    top[FPSTR(_enabled)] = enabled;
-    top[FPSTR(_maxReadInterval)] = maxReadingInterval;
-    top[FPSTR(_minReadInterval)] = minReadingInterval;
-    top[FPSTR(_HomeAssistantDiscovery)] = HomeAssistantDiscovery;
-    top[FPSTR(_offset)] = offset;
-
-    DEBUG_PRINTLN(F("BH1750 config saved."));
-  }
-
-  // called before setup() to populate properties from values stored in cfg.json
-  bool readFromConfig(JsonObject &root)
-  {
-    // we look for JSON object.
-    JsonObject top = root[FPSTR(_name)];
-    if (top.isNull())
-    {
-      DEBUG_PRINT(FPSTR(_name));
-      DEBUG_PRINT(F("BH1750"));
-      DEBUG_PRINTLN(F(": No config found. (Using defaults.)"));
-      return false;
-    }
-    bool configComplete = !top.isNull();
-
-    configComplete &= getJsonValue(top[FPSTR(_enabled)], enabled, false);
-    configComplete &= getJsonValue(top[FPSTR(_maxReadInterval)], maxReadingInterval, 10000); //ms
-    configComplete &= getJsonValue(top[FPSTR(_minReadInterval)], minReadingInterval, 500); //ms
-    configComplete &= getJsonValue(top[FPSTR(_HomeAssistantDiscovery)], HomeAssistantDiscovery, false);
-    configComplete &= getJsonValue(top[FPSTR(_offset)], offset, 1);
-
     DEBUG_PRINT(FPSTR(_name));
-    if (!initDone) {
-      DEBUG_PRINTLN(F(" config loaded."));
-    } else {
-      DEBUG_PRINTLN(F(" config (re)loaded."));
-    }
+    DEBUG_PRINT(F("BH1750"));
+    DEBUG_PRINTLN(F(": No config found. (Using defaults.)"));
+    return false;
+  }
+  bool configComplete = !top.isNull();
 
-    return configComplete;
-    
+  configComplete &= getJsonValue(top[FPSTR(_enabled)], enabled, false);
+  configComplete &= getJsonValue(top[FPSTR(_maxReadInterval)], maxReadingInterval, 10000); //ms
+  configComplete &= getJsonValue(top[FPSTR(_minReadInterval)], minReadingInterval, 500); //ms
+  configComplete &= getJsonValue(top[FPSTR(_HomeAssistantDiscovery)], HomeAssistantDiscovery, false);
+  configComplete &= getJsonValue(top[FPSTR(_offset)], offset, 1);
+
+  DEBUG_PRINT(FPSTR(_name));
+  if (!initDone) {
+    DEBUG_PRINTLN(F(" config loaded."));
+  } else {
+    DEBUG_PRINTLN(F(" config (re)loaded."));
   }
 
-  uint16_t getId()
-  {
-    return USERMOD_ID_BH1750;
-  }
+  return configComplete;
+  
+}
 
-};
 
 // strings to reduce flash memory usage (used more than twice)
 const char Usermod_BH1750::_name[] PROGMEM = "BH1750";
diff --git a/usermods/BH1750_v2/BH1750_v2.h b/usermods/BH1750_v2/BH1750_v2.h
new file mode 100644
index 000000000..22f51ce9b
--- /dev/null
+++ b/usermods/BH1750_v2/BH1750_v2.h
@@ -0,0 +1,92 @@
+
+#pragma once
+#include "wled.h"
+#include <BH1750.h>
+
+#ifdef WLED_DISABLE_MQTT
+#error "This user mod requires MQTT to be enabled."
+#endif
+
+// the max frequency to check photoresistor, 10 seconds
+#ifndef USERMOD_BH1750_MAX_MEASUREMENT_INTERVAL
+#define USERMOD_BH1750_MAX_MEASUREMENT_INTERVAL 10000
+#endif
+
+// the min frequency to check photoresistor, 500 ms
+#ifndef USERMOD_BH1750_MIN_MEASUREMENT_INTERVAL
+#define USERMOD_BH1750_MIN_MEASUREMENT_INTERVAL 500
+#endif
+
+// how many seconds after boot to take first measurement, 10 seconds
+#ifndef USERMOD_BH1750_FIRST_MEASUREMENT_AT
+#define USERMOD_BH1750_FIRST_MEASUREMENT_AT 10000
+#endif
+
+// only report if difference grater than offset value
+#ifndef USERMOD_BH1750_OFFSET_VALUE
+#define USERMOD_BH1750_OFFSET_VALUE 1
+#endif
+
+class Usermod_BH1750 : public Usermod
+{
+private:
+  int8_t offset = USERMOD_BH1750_OFFSET_VALUE;
+
+  unsigned long maxReadingInterval = USERMOD_BH1750_MAX_MEASUREMENT_INTERVAL;
+  unsigned long minReadingInterval = USERMOD_BH1750_MIN_MEASUREMENT_INTERVAL;
+  unsigned long lastMeasurement = UINT32_MAX - (USERMOD_BH1750_MAX_MEASUREMENT_INTERVAL - USERMOD_BH1750_FIRST_MEASUREMENT_AT);
+  unsigned long lastSend = UINT32_MAX - (USERMOD_BH1750_MAX_MEASUREMENT_INTERVAL - USERMOD_BH1750_FIRST_MEASUREMENT_AT);
+  // flag to indicate we have finished the first readLightLevel call
+  // allows this library to report to the user how long until the first
+  // measurement
+  bool getLuminanceComplete = false;
+
+  // flag set at startup
+  bool enabled = true;
+
+  // strings to reduce flash memory usage (used more than twice)
+  static const char _name[];
+  static const char _enabled[];
+  static const char _maxReadInterval[];
+  static const char _minReadInterval[];
+  static const char _offset[];
+  static const char _HomeAssistantDiscovery[];
+
+  bool initDone = false;
+  bool sensorFound = false;
+
+  // Home Assistant and MQTT  
+  String mqttLuminanceTopic;
+  bool mqttInitialized = false;
+  bool HomeAssistantDiscovery = true; // Publish Home Assistant Discovery messages
+
+  BH1750 lightMeter;
+  float lastLux = -1000;
+
+  // set up Home Assistant discovery entries
+  void _mqttInitialize();
+
+  // Create an MQTT Sensor for Home Assistant Discovery purposes, this includes a pointer to the topic that is published to in the Loop.
+  void _createMqttSensor(const String &name, const String &topic, const String &deviceClass, const String &unitOfMeasurement);
+
+public:
+  void setup();
+  void loop();
+  inline float getIlluminance()  {
+    return (float)lastLux;
+  }
+
+  void addToJsonInfo(JsonObject &root);
+
+  // (called from set.cpp) stores persistent properties to cfg.json
+  void addToConfig(JsonObject &root);
+
+  // called before setup() to populate properties from values stored in cfg.json
+  bool readFromConfig(JsonObject &root);
+
+  inline uint16_t getId()
+  {
+    return USERMOD_ID_BH1750;
+  }
+
+};
diff --git a/usermods/SN_Photoresistor/SN_Photoresistor.cpp b/usermods/SN_Photoresistor/SN_Photoresistor.cpp
index 97f865a97..ffd78c0f6 100644
--- a/usermods/SN_Photoresistor/SN_Photoresistor.cpp
+++ b/usermods/SN_Photoresistor/SN_Photoresistor.cpp
@@ -1,204 +1,137 @@
 #include "wled.h"
+#include "SN_Photoresistor.h"
 
 //Pin defaults for QuinLed Dig-Uno (A0)
 #ifndef PHOTORESISTOR_PIN
 #define PHOTORESISTOR_PIN A0
 #endif
 
-// the frequency to check photoresistor, 10 seconds
-#ifndef USERMOD_SN_PHOTORESISTOR_MEASUREMENT_INTERVAL
-#define USERMOD_SN_PHOTORESISTOR_MEASUREMENT_INTERVAL 10000
-#endif
-
-// how many seconds after boot to take first measurement, 10 seconds
-#ifndef USERMOD_SN_PHOTORESISTOR_FIRST_MEASUREMENT_AT
-#define USERMOD_SN_PHOTORESISTOR_FIRST_MEASUREMENT_AT 10000
-#endif
-
-// supplied voltage
-#ifndef USERMOD_SN_PHOTORESISTOR_REFERENCE_VOLTAGE
-#define USERMOD_SN_PHOTORESISTOR_REFERENCE_VOLTAGE 5
-#endif
-
-// 10 bits
-#ifndef USERMOD_SN_PHOTORESISTOR_ADC_PRECISION
-#define USERMOD_SN_PHOTORESISTOR_ADC_PRECISION 1024.0f
-#endif
-
-// resistor size 10K hms
-#ifndef USERMOD_SN_PHOTORESISTOR_RESISTOR_VALUE
-#define USERMOD_SN_PHOTORESISTOR_RESISTOR_VALUE 10000.0f
-#endif
-
-// only report if difference grater than offset value
-#ifndef USERMOD_SN_PHOTORESISTOR_OFFSET_VALUE
-#define USERMOD_SN_PHOTORESISTOR_OFFSET_VALUE 5
-#endif
-
-class Usermod_SN_Photoresistor : public Usermod
+static bool checkBoundSensor(float newValue, float prevValue, float maxDiff)
 {
-private:
-  float referenceVoltage = USERMOD_SN_PHOTORESISTOR_REFERENCE_VOLTAGE;
-  float resistorValue = USERMOD_SN_PHOTORESISTOR_RESISTOR_VALUE;
-  float adcPrecision = USERMOD_SN_PHOTORESISTOR_ADC_PRECISION;
-  int8_t offset = USERMOD_SN_PHOTORESISTOR_OFFSET_VALUE;
+  return isnan(prevValue) || newValue <= prevValue - maxDiff || newValue >= prevValue + maxDiff;
+}
 
-  unsigned long readingInterval = USERMOD_SN_PHOTORESISTOR_MEASUREMENT_INTERVAL;
-  // set last reading as "40 sec before boot", so first reading is taken after 20 sec
-  unsigned long lastMeasurement = UINT32_MAX - (USERMOD_SN_PHOTORESISTOR_MEASUREMENT_INTERVAL - USERMOD_SN_PHOTORESISTOR_FIRST_MEASUREMENT_AT);
-  // flag to indicate we have finished the first getTemperature call
-  // allows this library to report to the user how long until the first
-  // measurement
-  bool getLuminanceComplete = false;
-  uint16_t lastLDRValue = -1000;
+uint16_t Usermod_SN_Photoresistor::getLuminance()
+{
+  // http://forum.arduino.cc/index.php?topic=37555.0
+  // https://forum.arduino.cc/index.php?topic=185158.0
+  float volts = analogRead(PHOTORESISTOR_PIN) * (referenceVoltage / adcPrecision);
+  float amps = volts / resistorValue;
+  float lux = amps * 1000000 * 2.0;
 
-  // flag set at startup
-  bool disabled = false;
+  lastMeasurement = millis();
+  getLuminanceComplete = true;
+  return uint16_t(lux);
+}
 
-  // strings to reduce flash memory usage (used more than twice)
-  static const char _name[];
-  static const char _enabled[];
-  static const char _readInterval[];
-  static const char _referenceVoltage[];
-  static const char _resistorValue[];
-  static const char _adcPrecision[];
-  static const char _offset[];
+void Usermod_SN_Photoresistor::setup()
+{
+  // set pinmode
+  pinMode(PHOTORESISTOR_PIN, INPUT);
+}
 
-  bool checkBoundSensor(float newValue, float prevValue, float maxDiff)
+void Usermod_SN_Photoresistor::loop()
+{
+  if (disabled || strip.isUpdating())
+    return;
+
+  unsigned long now = millis();
+
+  // check to see if we are due for taking a measurement
+  // lastMeasurement will not be updated until the conversion
+  // is complete the the reading is finished
+  if (now - lastMeasurement < readingInterval)
   {
-    return isnan(prevValue) || newValue <= prevValue - maxDiff || newValue >= prevValue + maxDiff;
+    return;
   }
 
-  uint16_t getLuminance()
+  uint16_t currentLDRValue = getLuminance();
+  if (checkBoundSensor(currentLDRValue, lastLDRValue, offset))
   {
-    // http://forum.arduino.cc/index.php?topic=37555.0
-    // https://forum.arduino.cc/index.php?topic=185158.0
-    float volts = analogRead(PHOTORESISTOR_PIN) * (referenceVoltage / adcPrecision);
-    float amps = volts / resistorValue;
-    float lux = amps * 1000000 * 2.0;
-
-    lastMeasurement = millis();
-    getLuminanceComplete = true;
-    return uint16_t(lux);
-  }
-
-public:
-  void setup()
-  {
-    // set pinmode
-    pinMode(PHOTORESISTOR_PIN, INPUT);
-  }
-
-  void loop()
-  {
-    if (disabled || strip.isUpdating())
-      return;
-
-    unsigned long now = millis();
-
-    // check to see if we are due for taking a measurement
-    // lastMeasurement will not be updated until the conversion
-    // is complete the the reading is finished
-    if (now - lastMeasurement < readingInterval)
-    {
-      return;
-    }
-
-    uint16_t currentLDRValue = getLuminance();
-    if (checkBoundSensor(currentLDRValue, lastLDRValue, offset))
-    {
-      lastLDRValue = currentLDRValue;
+    lastLDRValue = currentLDRValue;
 
 #ifndef WLED_DISABLE_MQTT
-      if (WLED_MQTT_CONNECTED)
-      {
-        char subuf[45];
-        strcpy(subuf, mqttDeviceTopic);
-        strcat_P(subuf, PSTR("/luminance"));
-        mqtt->publish(subuf, 0, true, String(lastLDRValue).c_str());
-      }
-      else
-      {
-        DEBUG_PRINTLN(F("Missing MQTT connection. Not publishing data"));
-      }
-    }
-#endif
-  }
-
-  uint16_t getLastLDRValue()
-  {
-    return lastLDRValue;
-  }
-
-  void addToJsonInfo(JsonObject &root)
-  {
-    JsonObject user = root[F("u")];
-    if (user.isNull())
-      user = root.createNestedObject(F("u"));
-
-    JsonArray lux = user.createNestedArray(F("Luminance"));
-
-    if (!getLuminanceComplete)
+    if (WLED_MQTT_CONNECTED)
     {
-      // if we haven't read the sensor yet, let the user know
-      // that we are still waiting for the first measurement
-      lux.add((USERMOD_SN_PHOTORESISTOR_FIRST_MEASUREMENT_AT - millis()) / 1000);
-      lux.add(F(" sec until read"));
-      return;
+      char subuf[45];
+      strcpy(subuf, mqttDeviceTopic);
+      strcat_P(subuf, PSTR("/luminance"));
+      mqtt->publish(subuf, 0, true, String(lastLDRValue).c_str());
     }
-
-    lux.add(lastLDRValue);
-    lux.add(F(" lux"));
-  }
-
-  uint16_t getId()
-  {
-    return USERMOD_ID_SN_PHOTORESISTOR;
-  }
-
-  /**
-     * addToConfig() (called from set.cpp) stores persistent properties to cfg.json
-     */
-  void addToConfig(JsonObject &root)
-  {
-    // we add JSON object.
-    JsonObject top = root.createNestedObject(FPSTR(_name)); // usermodname
-    top[FPSTR(_enabled)] = !disabled;
-    top[FPSTR(_readInterval)] = readingInterval / 1000;
-    top[FPSTR(_referenceVoltage)] = referenceVoltage;
-    top[FPSTR(_resistorValue)] = resistorValue;
-    top[FPSTR(_adcPrecision)] = adcPrecision;
-    top[FPSTR(_offset)] = offset;
-
-    DEBUG_PRINTLN(F("Photoresistor config saved."));
-  }
-
-  /**
-  * readFromConfig() is called before setup() to populate properties from values stored in cfg.json
-  */
-  bool readFromConfig(JsonObject &root)
-  {
-    // we look for JSON object.
-    JsonObject top = root[FPSTR(_name)];
-    if (top.isNull()) {
-      DEBUG_PRINT(FPSTR(_name));
-      DEBUG_PRINTLN(F(": No config found. (Using defaults.)"));
-      return false;
+    else
+    {
+      DEBUG_PRINTLN(F("Missing MQTT connection. Not publishing data"));
     }
+  }
+#endif
+}
 
-    disabled         = !(top[FPSTR(_enabled)] | !disabled);
-    readingInterval  = (top[FPSTR(_readInterval)] | readingInterval/1000) * 1000; // convert to ms
-    referenceVoltage = top[FPSTR(_referenceVoltage)] | referenceVoltage;
-    resistorValue    = top[FPSTR(_resistorValue)] | resistorValue;
-    adcPrecision     = top[FPSTR(_adcPrecision)] | adcPrecision;
-    offset           = top[FPSTR(_offset)] | offset;
+
+void Usermod_SN_Photoresistor::addToJsonInfo(JsonObject &root)
+{
+  JsonObject user = root[F("u")];
+  if (user.isNull())
+    user = root.createNestedObject(F("u"));
+
+  JsonArray lux = user.createNestedArray(F("Luminance"));
+
+  if (!getLuminanceComplete)
+  {
+    // if we haven't read the sensor yet, let the user know
+    // that we are still waiting for the first measurement
+    lux.add((USERMOD_SN_PHOTORESISTOR_FIRST_MEASUREMENT_AT - millis()) / 1000);
+    lux.add(F(" sec until read"));
+    return;
+  }
+
+  lux.add(lastLDRValue);
+  lux.add(F(" lux"));
+}
+
+
+/**
+   * addToConfig() (called from set.cpp) stores persistent properties to cfg.json
+   */
+void Usermod_SN_Photoresistor::addToConfig(JsonObject &root)
+{
+  // we add JSON object.
+  JsonObject top = root.createNestedObject(FPSTR(_name)); // usermodname
+  top[FPSTR(_enabled)] = !disabled;
+  top[FPSTR(_readInterval)] = readingInterval / 1000;
+  top[FPSTR(_referenceVoltage)] = referenceVoltage;
+  top[FPSTR(_resistorValue)] = resistorValue;
+  top[FPSTR(_adcPrecision)] = adcPrecision;
+  top[FPSTR(_offset)] = offset;
+
+  DEBUG_PRINTLN(F("Photoresistor config saved."));
+}
+
+/**
+* readFromConfig() is called before setup() to populate properties from values stored in cfg.json
+*/
+bool Usermod_SN_Photoresistor::readFromConfig(JsonObject &root)
+{
+  // we look for JSON object.
+  JsonObject top = root[FPSTR(_name)];
+  if (top.isNull()) {
     DEBUG_PRINT(FPSTR(_name));
-    DEBUG_PRINTLN(F(" config (re)loaded."));
-
-    // use "return !top["newestParameter"].isNull();" when updating Usermod with new features
-    return true;
+    DEBUG_PRINTLN(F(": No config found. (Using defaults.)"));
+    return false;
   }
-};
+
+  disabled         = !(top[FPSTR(_enabled)] | !disabled);
+  readingInterval  = (top[FPSTR(_readInterval)] | readingInterval/1000) * 1000; // convert to ms
+  referenceVoltage = top[FPSTR(_referenceVoltage)] | referenceVoltage;
+  resistorValue    = top[FPSTR(_resistorValue)] | resistorValue;
+  adcPrecision     = top[FPSTR(_adcPrecision)] | adcPrecision;
+  offset           = top[FPSTR(_offset)] | offset;
+  DEBUG_PRINT(FPSTR(_name));
+  DEBUG_PRINTLN(F(" config (re)loaded."));
+
+  // use "return !top["newestParameter"].isNull();" when updating Usermod with new features
+  return true;
+}
+
 
 // strings to reduce flash memory usage (used more than twice)
 const char Usermod_SN_Photoresistor::_name[] PROGMEM = "Photoresistor";
@@ -209,6 +142,5 @@ const char Usermod_SN_Photoresistor::_resistorValue[] PROGMEM = "resistor-value"
 const char Usermod_SN_Photoresistor::_adcPrecision[] PROGMEM = "adc-precision";
 const char Usermod_SN_Photoresistor::_offset[] PROGMEM = "offset";
 
-
 static Usermod_SN_Photoresistor sn_photoresistor;
 REGISTER_USERMOD(sn_photoresistor);
\ No newline at end of file
diff --git a/usermods/SN_Photoresistor/SN_Photoresistor.h b/usermods/SN_Photoresistor/SN_Photoresistor.h
new file mode 100644
index 000000000..3c3dc68e6
--- /dev/null
+++ b/usermods/SN_Photoresistor/SN_Photoresistor.h
@@ -0,0 +1,90 @@
+#pragma once
+#include "wled.h"
+
+// the frequency to check photoresistor, 10 seconds
+#ifndef USERMOD_SN_PHOTORESISTOR_MEASUREMENT_INTERVAL
+#define USERMOD_SN_PHOTORESISTOR_MEASUREMENT_INTERVAL 10000
+#endif
+
+// how many seconds after boot to take first measurement, 10 seconds
+#ifndef USERMOD_SN_PHOTORESISTOR_FIRST_MEASUREMENT_AT
+#define USERMOD_SN_PHOTORESISTOR_FIRST_MEASUREMENT_AT 10000
+#endif
+
+// supplied voltage
+#ifndef USERMOD_SN_PHOTORESISTOR_REFERENCE_VOLTAGE
+#define USERMOD_SN_PHOTORESISTOR_REFERENCE_VOLTAGE 5
+#endif
+
+// 10 bits
+#ifndef USERMOD_SN_PHOTORESISTOR_ADC_PRECISION
+#define USERMOD_SN_PHOTORESISTOR_ADC_PRECISION 1024.0f
+#endif
+
+// resistor size 10K hms
+#ifndef USERMOD_SN_PHOTORESISTOR_RESISTOR_VALUE
+#define USERMOD_SN_PHOTORESISTOR_RESISTOR_VALUE 10000.0f
+#endif
+
+// only report if difference grater than offset value
+#ifndef USERMOD_SN_PHOTORESISTOR_OFFSET_VALUE
+#define USERMOD_SN_PHOTORESISTOR_OFFSET_VALUE 5
+#endif
+
+class Usermod_SN_Photoresistor : public Usermod
+{
+private:
+  float referenceVoltage = USERMOD_SN_PHOTORESISTOR_REFERENCE_VOLTAGE;
+  float resistorValue = USERMOD_SN_PHOTORESISTOR_RESISTOR_VALUE;
+  float adcPrecision = USERMOD_SN_PHOTORESISTOR_ADC_PRECISION;
+  int8_t offset = USERMOD_SN_PHOTORESISTOR_OFFSET_VALUE;
+
+  unsigned long readingInterval = USERMOD_SN_PHOTORESISTOR_MEASUREMENT_INTERVAL;
+  // set last reading as "40 sec before boot", so first reading is taken after 20 sec
+  unsigned long lastMeasurement = UINT32_MAX - (USERMOD_SN_PHOTORESISTOR_MEASUREMENT_INTERVAL - USERMOD_SN_PHOTORESISTOR_FIRST_MEASUREMENT_AT);
+  // flag to indicate we have finished the first getTemperature call
+  // allows this library to report to the user how long until the first
+  // measurement
+  bool getLuminanceComplete = false;
+  uint16_t lastLDRValue = -1000;
+
+  // flag set at startup
+  bool disabled = false;
+
+  // strings to reduce flash memory usage (used more than twice)
+  static const char _name[];
+  static const char _enabled[];
+  static const char _readInterval[];
+  static const char _referenceVoltage[];
+  static const char _resistorValue[];
+  static const char _adcPrecision[];
+  static const char _offset[];
+
+  uint16_t getLuminance();
+
+public:
+  void setup();
+  void loop();
+
+  uint16_t getLastLDRValue()
+  {
+    return lastLDRValue;
+  }
+
+  void addToJsonInfo(JsonObject &root);
+
+  uint16_t getId()
+  {
+    return USERMOD_ID_SN_PHOTORESISTOR;
+  }
+
+  /**
+     * addToConfig() (called from set.cpp) stores persistent properties to cfg.json
+     */
+  void addToConfig(JsonObject &root);
+
+  /**
+  * readFromConfig() is called before setup() to populate properties from values stored in cfg.json
+  */
+  bool readFromConfig(JsonObject &root);
+};
diff --git a/usermods/SN_Photoresistor/usermods_list.cpp b/usermods/SN_Photoresistor/usermods_list.cpp
deleted file mode 100644
index a2c6ca165..000000000
--- a/usermods/SN_Photoresistor/usermods_list.cpp
+++ /dev/null
@@ -1,14 +0,0 @@
-#include "wled.h"
-/*
- * Register your v2 usermods here!
- */
-#ifdef USERMOD_SN_PHOTORESISTOR
-#include "../usermods/SN_Photoresistor/usermod_sn_photoresistor.h"
-#endif
-
-void registerUsermods()
-{
-#ifdef USERMOD_SN_PHOTORESISTOR
-  UsermodManager::add(new Usermod_SN_Photoresistor());
-#endif
-}
\ No newline at end of file
diff --git a/usermods/seven_segment_display_reloaded/library.json b/usermods/seven_segment_display_reloaded/library.json
index fdce8b536..4e84e38ed 100644
--- a/usermods/seven_segment_display_reloaded/library.json
+++ b/usermods/seven_segment_display_reloaded/library.json
@@ -1,3 +1,6 @@
 {
-  "name:": "seven_segment_display_reloaded"
+  "name": "seven_segment_display_reloaded",
+  "build": {
+    "extraScript": "setup_deps.py"
+  }  
 }
\ No newline at end of file
diff --git a/usermods/seven_segment_display_reloaded/setup_deps.py b/usermods/seven_segment_display_reloaded/setup_deps.py
new file mode 100644
index 000000000..0c663d824
--- /dev/null
+++ b/usermods/seven_segment_display_reloaded/setup_deps.py
@@ -0,0 +1,9 @@
+Import('env')
+
+
+usermods = env.GetProjectOption("custom_usermods","").split()
+# Check for partner usermods
+if "SN_Photoresistor" in usermods:
+    env.Append(CPPDEFINES=[("USERMOD_SN_PHOTORESISTOR")])
+if "BH1750_v2" in usermods:
+    env.Append(CPPDEFINES=[("USERMOD_BH1750")])
diff --git a/usermods/seven_segment_display_reloaded/seven_segment_display_reloaded.cpp b/usermods/seven_segment_display_reloaded/seven_segment_display_reloaded.cpp
index 971a80c8d..893e061bc 100644
--- a/usermods/seven_segment_display_reloaded/seven_segment_display_reloaded.cpp
+++ b/usermods/seven_segment_display_reloaded/seven_segment_display_reloaded.cpp
@@ -1,4 +1,10 @@
 #include "wled.h"
+#ifdef USERMOD_SN_PHOTORESISTOR
+  #include "SN_Photoresistor.h"
+#endif
+#ifdef USERMOD_BH1750
+  #include "BH1750_v2.h"
+#endif
 
 #ifdef WLED_DISABLE_MQTT
 #error "This user mod requires MQTT to be enabled."