Daemon for BME280 sensor reporting through MQTT to Home Assistant
This code uses the Pimoroni bme280-python code to scan the BME280 sensor attached to a raspberry pi and report the results over MQTT.
The daemon uses configparser() to read an .ini style file to get information on the MQTT server to contact. It is also possible to set the i2c address for the sensor, and provide measurement offsets. If elevation is provided (in meters), a sealevel pressure value is calculated and provided in the MQTT feed.
I am currently running this code on a raspberry pi zero W.
A systemd service file is also included and is part of the install process in the Makefile.
You can install these using:
sudo poetry installInstall the requirements in the root enviroment, or whichever enviroment make sense for you. Currently I run the daemon as root for easy access to /dev/i2c
When the MQTT integration is added to Home Assistant, the sensors will be added automatically through MQTT Discovery. The prefix for the discovery topic (default homeassistant, see this repo's config file) can be changed.