Monitoring CO2 levels, and temperature with an ESP8266 D1 Mini microcontroller and a Sensirion SCD40 CO2 sensor.
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Updated
May 28, 2024 - C++
Monitoring CO2 levels, and temperature with an ESP8266 D1 Mini microcontroller and a Sensirion SCD40 CO2 sensor.
Connect Honeywell Resideo CO2 meter to Home Assistant
Yet another CO2-Ampel with web interface for configuration and live sensor readings, logging, RESTful api, MQTT and optional LoRaWAN support
Monitor and show CO2, temperature, humidity and pressure with M5StickC+ENV II Unit+MH-Z19C (Arduino)
Simple, self-contained CO2 monitor with a built-in display
DIY Frugal CO₂ Sensor: Arduino & inexpensive parts to build a sub-$100 system to track and evaluate COVID-19 risk using CO₂ levels to estimate ventilation and occupancy.
Measures the CO2 level in the room and gives a warning when to ventilate. All values are also distributed via MQTT.
Simple CO2 meter using Arduino UNO-Mega board and popular CO2 sensors (SenseAir S8, Sensirion SCD30, Winsen MH-Z14 or 19 and Cubic CM1106). Operation modes: Normal, Calibration 400ppm, Alarm adjust and Altitud compensation adjust
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