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Top 2 co2-ampel open source projects

coro2sens
Build a simple device that warns if CO₂ concentration in a room becomes a risk for COVID-19 aerosol infections.
CO2-Ampel
CO2-Ampel / CO2-Traffic-Light to measure and show the carbon dioxide concentration in a room, based on Sensirion SCD30/SCD4x sensor and Microchip SAMD21 microcontroller
1-2 of 2 co2-ampel projects