CO₂ Monitor Sale It uses an ultra-capacitor to

It uses an ultra-capacitor to store the solar energy

The github repository for the design files and instructions is available here:

Rising or falling edge trigger

Know when to ventilate your room

com/curiouselectric/ISL28022_breakout

CO₂ Monitor Sale It uses an ultra-capacitor toKnow when to ventilate your room! Keep the air fresh and circulating with this carbon dioxide monitor. There has been quite a lot of discussion about using carbon dioxide as an indicator of stale, non moving, air which could cause the build up of covid 19. A really interesting discussion from Make magazine is here: https: makezine. com 2021 04 22 plan c02 live . The concept is: if there are lots of people breathing out CO and the room is not well