Hacking the #IKEA #VINDRIKTING also solves the granularity problem. The sensor itself is accurate enough considering the cost, but "green", "yellow", and "red" don't really give you enough to go on when it comes to air quality. https://airgradient.com/blog/ikea-vindriktning-accuracy/

I keep on meaning to pick up a
#IKEA #VINDSTYRKA smart sensor — their high end version of the #VINDRIKTING. But honestly the VINDRIKTING does what I need after hacking it with the #RP2040, and for a bunch less money. https://ikea.com/us/en/p/vindstyrka-air-quality-sensor-smart-30498239/.

There are a couple of other custom PCBs for the #IKEA
#VINDRIKTING kicking around, for instance https://github.com/LaskaKit/ESP-Vindriktning, but it'll be awesome to see one from @adafruit and @blitzcitydiy.

I had a look at the #IKEA #VINDRIKTING myself and a much more hacked together build using the @[email protected]'s #RP2040, https://www.raspberrypi.com/news/hacking-ikea/.