Recently I’ve been working on a small craft project: extending an IKEA Vindriktning air quality sensor with a D1 Mini to read the data and forward it to a server via MQTT.
See also Sören Beye’s Github repository for the conversion. However, instead of this firmware, I use Tasmota based on these instructions from Blakadder, which is much more convenient to set up and configure. See also the Tasmotizer on Github.
When I was looking for a suitable server, I quickly ended up at Home Assistant. This is a free software solution for integrating numerous smart home devices and can also be used on a Raspberry Pi 3 or 4. In my case this is a Raspberry Pi 4.
Update 2022-08-14: In the meantime I have expanded this with another sensor for CO2, relative humidity and temperature, see the article here.
