Schlagwort-Archive: co2

CO2-Traffic-Light

eCO2-Traffic-Light A cheap Traffic-Light-style gas detector (ESP32 + CCS811 + 3 LEDs) that gives an indication of when to open the windows in a room with a lot of exhaled and thus possibly polluted air. The intention of this project was to have a simple device that gives an indication of when to open the […]