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usermod_si7021_mqtt_ha.h |
Si7021 to MQTT (with Home Assistant Auto Discovery) usermod
This usermod implements support for Si7021 I²C temperature and humidity sensors.
As of this writing, the sensor data will not be shown on the WLED UI, but it is published via MQTT to WLED's "built-in" MQTT device topic.
temperature: $mqttDeviceTopic/si7021_temperature
humidity: $mqttDeviceTopic/si7021_humidity
The following sensors can also be published:
heat_index: $mqttDeviceTopic/si7021_heat_index
dew_point: $mqttDeviceTopic/si7021_dew_point
absolute_humidity: $mqttDeviceTopic/si7021_absolute_humidity
Sensor data will be updated/sent every 60 seconds.
This usermod also supports Home Assistant Auto Discovery.
Settings via Usermod Setup
enabled
: Enables this usermodSend Dew Point, Abs. Humidity and Heat Index
: Enables additional sensorsHome Assistant MQTT Auto-Discovery
: Enables Home Assistant Auto Discovery
Installation
Hardware
Attach the Si7021 sensor to the I²C interface.
Default PINs ESP32:
SCL_PIN = 22;
SDA_PIN = 21;
Default PINs ESP8266:
SCL_PIN = 5;
SDA_PIN = 4;
Software
Add to build_flags
in platformio.ini:
-D USERMOD_SI7021_MQTT_HA
Add to lib_deps
in platformio.ini:
adafruit/Adafruit Si7021 Library @ 1.4.0
BME280@~3.0.0
Credits
- Aircoookie for making WLED
- Other usermod creators for example code (
sensors_to_mqtt
andmulti_relay
especially) - You, for reading this