Simple CO2 logger written in MicroPython that broadcasts CO2, temperature and humidity measurements over mqtt (e.g. to HomeAssistant). It also features a display to show the measurments and a buzzer to signal acoustically when a CO2 threshold ist exceeded.
| Qty | Name / Description |
|---|---|
| 1 | LOLIN D1 mini (or similar esp8266 MCU) |
| 1 | Sensirion SCD30 CO2 sensor |
| 1 | 0.66" OLED display (64x48 pixel) |
| 1 | 5V active buzzer |
| 1 | 4 pin micro push button |