This repository contains the Arduino code and documentation for interfacing an Arduino Uno with an MG811 CO2 sensor. The aim of this project is to measure the CO2 concentration in the air and display ...
MH-Z19 Tx to Arduino Digital Pin (Serial Rx pin) MH-Z19 Rx to Arduino Digital Pin (Serial Tx pin) other MH-Z19 pins are not used. This library is testing only ESP ...