M5Stack CO2 Unit with Temperature and Humidity Sensor (SCD40)

The UNIT CO2 from M5Stack is a photoacoustic Carbon Dioxide (CO2) Unit that will tell you the CO2 PPM (parts-per-million) composition of ambient air.

The unit has a built-in Sensirion SCD40 sensor powered by buck converter circuitry and communication handled via I2C. It has a range of 400~2000 ppm with an accuracy of ±(50 ppm + 5% of reading).

It supports temperature and humidity measurements too – perfect for environmental sensing, scientific experiments, air quality and ventilation studies, and more.

Features

• CO2 concentration detection
• Temperature and humidity measurement
• I2C communication (Add: 0x62)
• Integrated 5V -> 3.3V Buck converter
• 2x Brick holes
• HY2.0 4-pin interface

Specifications

Resources

• Product Documentation
• Schematic
• SCD40 datasheet
• SY8089AAAC datasheet
• Arduino Examples
  • M5Unit-CO2 with M5Core
  • M5Unit-CO2 with M5Atom
  • M5Unit-CO2 with M5StickC
  • M5Unit-CO2 with M5StickCPlus

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