if you have a high-uptime PC, you can find USB-enabled SDS011 sensors for $30 on Amazon or anywhere else, and free software that creates a web dashboard that sh

if you have a high-uptime PC, you can find USB-enabled SDS011 sensors for $30 on Amazon or anywhere else, and free software that creates a web dashboard that shows VOC count by time. can’t remember if these devices measure CO2/NO2 specifically though. https://github.com/seandlg/sds011docker https://github.com/seandlg/sds011docker