This is a plugin for Homebridge which shows up as an air quality sensor. The values are read from a file. Based on homebridge-temperature-file.
The plugin expects to get a list of readings in JSON form:
[
{"pm25": 1.3, "pm10": 2.9, "time": "12.03.2020 21:23:32"},
{"pm10": 2.1, "pm25": 1.1, "time": "12.03.2020 22:47:28"}
]
You can use this guide to setup a Python script to read values from a SDS011 sensor to a file.
Make sure to change line 137 (jsonrow) of aqi.py from the guide above. The
date format shoud be changed from %d.%m.%Y to %Y-%d-%m for the plugin to
work reliably.
Run npm install homebridge-air-quality-file
Add an accessory configuration into your Homebridge config.json:
{
"accessory": "AirQualityFile",
"name": "Air-quality-sensor",
"description": "Air quality sensor",
"file_path": "/home/pi/air-quality/aqi.json"
}
Point the file_path to a file containing the readings.
Run tests with Jest
npm run test