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Arduino CO2 Monitor

Super simple battery powered and aruino based CO2 Monitor which you can e.g. take with you in a meeting room.

Most of the code for the scd41 was taken from the official example: github.comSensirion/arduino-i2c-scd4x

Parts

  • Arduino Nano
  • Sensirion SCD40
  • short strip of WS2812B LEDs
  • 2x 18650 Li-Ion cells
  • TC4056 charging board with USB-C
  • power switch