How to use MQ2 gas sensor with Arduino | Step by step instructions
Hello, welcome back to another tutorial from the STEMx NG. In this tutorial, we will learn what is the MQ2 sensor and how it works with an Arduino. We have already described the MQ3 sensor in a previous tutorial. This sensor also works in the same way as the MQ3 sensor. Also, this MQ2 sensor can measure the amount of LP gas, smoke, carbon monoxide, and methane in the air. This tutorial explains how to make an LP Gas Measurement Project with Arduino step by step. We can buy this sensor in the market at a very low price. The sensor is made of 6 pins with a stainless steel mesh cover on the outside. This mesh is designed so that only air particles can pass through. Also, this iron mesh connects to the sensor body using a stainless steel ring. These sensors belong to the metal oxide semiconductor type. That is, when a gas enters the sensor, the concentration of the gas is detected according to the degree to which the resistance of the sensor element changes. Okay, now let’s tal...