Hello everyone, this repository contains all the resource files for basic Arduino Tutorials on Circuit Digest. If you are interested to know more about Arduino, then You can visit the following links.

> MQ135 is mainly used to detect the concentration of carbon dioxide, alcohol, benzene, NOx, ammonia and other gases in the air.

The pulse sensor comes with a flat ribbon cable with three male header connectors. The Pinout of the Pulse sensor is given below: S(Signal) is the Analog output pin of the Sensor Module that will give ...