While the Ikea Vindriktning might not be accurate, I have found it incredibly consistent and reliable. I bought a handful of them and hacked them with ESPs (th

While the Ikea Vindriktning might not be accurate, I have found it incredibly consistent and reliable. I bought a handful of them and hacked them with ESPs (thanks Hypfer) to push data into Home Assistant. They're sensitive enough that I can track if/when our cat boxes get cleaned. We have a 3 story house and have observed air quality changes in our bedroom and office that are immediately above our stove in the kitchen. https://i.imgur.com/Mjk65pL.png https://i.imgur.com/Mjk65pL.png There isn't a lot people can do to affect the baseline air quality in their homes, but having a sensor that can identify negative change is significantly better than nothing. A precise and accurate sensor is nice but doesn't offer much benefits above or beyond that.