OpenCO2 Mini

Portable open-source indoor CO2 and air-quality monitor using the Sensirion STCC4 sensor.

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A portable open-source indoor CO2 and air-quality monitor that uses the Sensirion STCC4 sensor. It helps people track indoor CO2 to know when to ventilate and serves as an open, portable alternative to pricier closed commercial monitors for health-conscious individuals, makers, and office-based settings.

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