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Remove deprecated HTU21D(F) Sensor integration (#21816)
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Franck Nijhof
GitHub
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---
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title: HTU21D(F) Sensor
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description: Instructions on how to integrate a HTU21D Temperature and humidity sensor into Home Assistant.
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ha_category:
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- DIY
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ha_release: 0.48
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ha_iot_class: Local Push
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ha_domain: htu21d
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ha_platforms:
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- sensor
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---
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<div class='note warning'>
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This integration is deprecated and will be removed in Home Assistant Core 2022.4.
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For more information see: [Architectural Decision Record 0019](https://github.com/home-assistant/architecture/blob/master/adr/0019-GPIO.md).
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</div>
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The `htu21d` sensor platform allows you to read the temperature and humidity from a [HTU21D sensor](https://cdn-shop.adafruit.com/datasheets/1899_HTU21D.pdf) connected via [I2c](https://en.wikipedia.org/wiki/I²C) bus (SDA, SCL pins).
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Tested devices:
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- [Raspberry Pi](https://www.raspberrypi.org/)
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## Configuration
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To use your HTU21D sensor in your installation, add the following to your `configuration.yaml` file:
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```yaml
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# Example configuration.yaml entry
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sensor:
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- platform: htu21d
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```
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{% configuration %}
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name:
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description: The name of the sensor.
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required: false
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default: i2c_bus
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type: string
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i2c_bus:
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description: I2c bus where the sensor is.
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required: false
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default: 1 (for Raspberry Pi 2 and 3)
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type: integer
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{% endconfiguration %}
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## Customizing the sensor data
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Give the values friendly names and icons, add the following to your `customize:` section.
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```yaml
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# Example configuration.yaml entry
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customize:
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sensor.htu21d_sensor_temperature:
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icon: mdi:thermometer
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friendly_name: "Temperature"
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sensor.htu21d_sensor_humidity:
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icon: mdi:weather-rainy
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friendly_name: "Humidity"
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```
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To create a group, add the following to your `groups` section.
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```yaml
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# Example configuration.yaml entry
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group:
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ambient_sensor:
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name: HTU21D Environment sensor
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entities:
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- sensor.htu21d_sensor_temperature
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- sensor.htu21d_sensor_humidity
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```
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## Directions for installing smbus support on Raspberry Pi
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Enable I2c interface with the Raspberry Pi configuration utility:
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```bash
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# pi user environment: Enable i2c interface
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$ sudo raspi-config
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```
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Select `Interfacing options->I2C` choose `<Yes>` and hit `Enter`, then go to `Finish` and you'll be prompted to reboot.
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Install dependencies for use the `smbus-cffi` module and enable your `homeassistant` user to join the _i2c_ group:
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```bash
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# pi user environment: Install i2c dependencies and utilities
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$ sudo apt-get install build-essential libi2c-dev i2c-tools python-dev libffi-dev
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# pi user environment: Add homeassistant user to the i2c group
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$ sudo addgroup homeassistant i2c
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# pi user environment: Reboot Raspberry Pi to apply changes
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$ sudo reboot
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```
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### Check the i2c address of the sensor
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After installing `i2c-tools`, a new utility is available to scan the addresses of the connected sensors:
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```bash
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/usr/sbin/i2cdetect -y 1
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```
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It will output a table like this:
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```text
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0 1 2 3 4 5 6 7 8 9 a b c d e f
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00: -- -- -- -- -- -- -- -- -- -- -- -- --
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10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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20: -- -- -- 23 -- -- -- -- -- -- -- -- -- -- -- --
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30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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40: 40 -- -- -- -- -- UU -- -- -- -- -- -- -- -- --
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50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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70: -- -- -- -- -- -- -- 77
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```
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So you can see the sensor is present at the **0x40** address (there are more i2c sensors in that Raspberry Pi).
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@ -718,7 +718,6 @@
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/components/sensor.homematicip_cloud /integrations/homematicip_cloud
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/components/sensor.hp_ilo /integrations/hp_ilo
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/components/sensor.http /integrations/http#sensor
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/components/sensor.htu21d /integrations/htu21d
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/components/sensor.huawei_lte /integrations/huawei_lte#sensor
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/components/sensor.hydrawise /integrations/hydrawise#sensor
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/components/sensor.ihc /integrations/ihc#sensor
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@ -1382,7 +1381,6 @@
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/components/hp_ilo /integrations/hp_ilo
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/components/html5 /integrations/html5
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/components/http /integrations/http
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/components/htu21d /integrations/htu21d
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/components/huawei_lte /integrations/huawei_lte
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/components/hue /integrations/hue
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/components/hunterdouglas_powerview /integrations/hunterdouglas_powerview
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@ -2361,6 +2359,9 @@
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/components/light.piglow /more-info/removed-integration 301
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/components/piglow /more-info/removed-integration 301
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/integrations/piglow /more-info/removed-integration 301
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/components/htu21d /more-info/removed-integration 301
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/components/sensor.htu21d /more-info/removed-integration 301
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/integrations/htu21d /more-info/removed-integration 301
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/components/envirophat /more-info/removed-integration 301
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/components/sensor.envirophat /more-info/removed-integration 301
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/integrations/envirophat /more-info/removed-integration 301
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