[plett]

I attached a cheap IKEA Vindriktning PM2.5 sensor to esphome to get air cleanliness data into Home Assistant [1]. That's also very simple to do - solder some wires and write a few lines of yaml and it shows up in the web UI. I bought two of them and they are accurate to each other, so the sensors appear to be acceptable.

[1] https://plett.uk/posts/ikea-air-sensor/

[jve]

They are extremely inaccurate. But relative measurement is OK - you can see rising or falling pollution. When I put one in kitchen it "died" pretty fast - I think the cooking oil grease got onto the sensor and it is game over for me. Shows MAX PM2.5 all the time.

[noja]

Do you know if the new ikea air quality sensor has the same fan as the first one? The original had a fan that would turn on and off every ten seconds.

[joecool1029]

It does but it's a different sensor and doesn't pulse as frequently (I think it has a weekly pulse to clean it... SENS54 is the sensor if you want to look it up)