I do. I just got started because it looked like a fun project to build, I went with the Airgradient DIY solution[0]. At first I used a combination of Prometheus

I do. I just got started because it looked like a fun project to build, I went with the Airgradient DIY solution[0]. At first I used a combination of Prometheus and Grafana, then I integrated the solution with an MQTT server and Home Assistant[1] instead. I live in a duplex, which means there's _a lot_ of air volume and mostly just me, so CO2 levels don't skyrocket and won't even reach 1000ppm after the whole day. I usually blast the windows open for a few minutes first thing in the morning and that does the trick, bringing levels down to ~500ppm. What's worth mentioning is the massive temperature difference in between the top and the bottom floor, which is from 3 to 5 degrees Celsius higher upstairs. CO2 is also higher upstairs, about 150ppm, and P2.5 is usually higher downstairs (do they fall to the ground?) I'm taking one of the sensors to my parent's this week, since they use a closed log burner to heat the house and I'm curious what the levels are going to be. Last anecdotal point, I was fitting a Bosch Athlete upright vacuum cleaner with new VTC6 batteries for extended battery life and increased suction power this weekend, which requires a lot of soldering iron and tin, and I was amazed at how the PM2.5 would go crypto-style _to the Moon_ [0] https://www.airgradient.com/open-airgradient/instructions/diy/ https://www.airgradient.com/open-airgradient/instructions/di... [1] https://github.com/nsbk/airgradient_mqtt https://github.com/nsbk/airgradient_mqtt