Use Arduino to drive MQ-5 gas sensor

1)Objective:

In this project, we will show how to use Arduino and MQ5 gas sensor to detect smoke and gas.

2)Parts and devices:

1 x ardunio UNO(or Arduino mega2560)

1 x USB cable

1 x MQ-5 Gas sensor

1 x LED

Jump wires

3)Circuit Graph:

MQ5_1_bb

4) Sample code download link as following:

MQ_5 Arduino test code download here

Unzip the downloaded file and upload it into Arduino.

5)Result:

When you put a gas lighter close to sensor,the LED will flash, serial window in arduino IDE will show “dangerous”;If you remove gas lighter from sensor,LED will turn off and serial window will show “NO dangerous”. See following pictures:

dangerous no dangerous

Posted in Arduino Parts & Projects

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