Funny this popped up on HN. I just went down this rabbit hole a week or two ago and settled on a Nettigo DIY kit. You solder a few of these sensors together, fl

Funny this popped up on HN. I just went down this rabbit hole a week or two ago and settled on a Nettigo DIY kit. You solder a few of these sensors together, flash an opensource firmware on the Wemos D1 running the thing and you're good to go. Works out of the box with Homeassistant as well. Looks very similar to this airgradient one. The unit I got has a heating element to combat condensation and the like for outdoor use, humidity and temp sensors, air pressure, and PM2.5 + PM10 https://nettigo.eu/products/nettigo-air-monitor-0-3-base-kit https://nettigo.eu/products/nettigo-air-monitor-0-3-base-kit