Methods and explanation can be found in /src/MH-Z14A.h In case of communication issues with the sensor, please first check for sufficient power supply (the sensor needs at least 150 mA peek). MH-Z14A ...
Using MH-Z19B CO2 Sensor, DHT22, OLED Display, and ESP32 with Arduino This project combines the MH-Z19B CO2 sensor, DHT22 temperature and humidity sensor, and an OLED display with the ESP32 to measure ...