I had a good play with MH-Z19 Co2 sensors and some basic python, here's some photos (and some old crappy code): https://github.com/sammcj/CO2-Logger#photos http

I had a good play with MH-Z19 Co2 sensors and some basic python, here's some photos (and some old crappy code): https://github.com/sammcj/CO2-Logger#photos https://github.com/sammcj/CO2-Logger#photos