CO2 Sensor for Schools
![erco](https://forums.parallax.com/uploads/userpics/032/nK79TF2YS9C2I.jpg)
Dad helps daughter make a CO2 monitor to take to school to check for proper ventilation. Awesome project, even if Arduino!
Dad helps daughter make a CO2 monitor to take to school to check for proper ventilation. Awesome project, even if Arduino!