#include "MQ135.h" void setup (){ Serial.begin (9600); } void loop() { MQ135 gasSensor = MQ135(A0); // Attach sensor to pin A0 float rzero = gasSensor.getRZero ...

The Aura of CO2 is a device that monitors the quantity of Carbon Dioxide,CO2 in your environment. It utilises a MQ135 gas sensor which has a Tin conductor that ...