In the search for a more reliable sensor, he built this project which uses CO2 to help gauge air quality. Most of the reason that CO2 sensors aren’t used as air quality sensors is cost.

Its MH-Z14A NDIR CO2 sensor and GP2Y1010AU0F optical dust detector are read by a WiFi-enabled microcontroller, this time the Arduino Nano RP2040 Connect, which ultimately reports its findings to ...

WHAT SETS IT APART. The Arduino-based system is not only affordable but also customisable. Its compact design includes an Arduino board, a CO2 sensor, an SD-card module for data logging, and a ...