- Measurement every 5 seconds of the CO2 rate in the air, the temperature and the humidity rate
- Two display modes, navigation with buttons
- Display of instantaneous values with an RGB color code proportional to the CO2 level
- Display of a graph with the last 200 measurements
- Calibration (long press on button 2)
- Standby (Deep Sleep) (long press on button 1)
- Battery level monitoring
- Automatic shutdown if battery low
- TTGO T-Display (ESP32 + 1.14" screen)
- Sensirion SCD30 CO2 sensor
- (Optional) 3.7V Lithium Battery
ESP32 T-Display | SCD30 |
---|---|
3V3 | VIN |
GND | GND |
GPIO-22/SCL | SCL |
GPIO21/SDA | SDA |
- https://github.com/fvanderbiest/arduino-sketches/tree/main/sketch_scd30_ssd1306_neopixel
- http://nousaerons.fr/makersco2/
Published under MIT License