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Authored by Peter-Bernd Otte

MH-Z19 Readout

Infrared CO2 Sensor

Usage:

  • install the necessary module: pip install pyserial
Edited
mhz19.py 646 Bytes
  • cable assignment:

    • red = +5V
    • black = GND
    • green = TX, 3.3V TTL level (connect to RX on MCU side)
    • blue = RX, 3.3V TTL level (connect to TX on MCU side)
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