Are you worried about your Home Safety??

This might be a perfect Project to get started with :)

This ible will explain how to receive sms when there is "GAS" Leakage at your home.

This project involves few components you don't need to be a nerd to make it.

List of components:

1) MQ-2 Gas Sensor

2)GSM Module

3) Arduino

4) Connecting Wires.

Step 1: Circuit Connection

You don't need to connect the way I did here, It just a explanation about which pin of arduino meets the GSM pin, all you have to do is place the GSM shield in the Arduino.

Connect the MQ-2 Gas sensor's Digital Outpin to the 7th pin of arduino or any other pin you'd like, but don't forget to change in the program (if you change the pin)

Step 2: Arduino Program

int PIN = 7;

int sensor = 0;

void setup() {

pinMode (PIN,INPUT);


delay(5000); }

void loop() {

sensor = digitalRead (PIN);

if (sensor == HIGH){





Serial.println("AT+CMGS=\"+919962*****\""); //CHANGE TO DESTINATION NUMBER


Serial.print("Gas Leakage at HOME (attention required)");


delay(300000); }


You can also download the program from this link: https://www.dropbox.com/s/q4vlcadygyn7giq/gsm_testing.ino?dl=0

Step 3: Add-on to the Project

You can also add a Flame sensor and other sensors to this project and modify the code for your Complete safe guard of your Home.

You can also check My other works in my blog: http://www.labviewarduino.in/

Please.. Ans me as soon as you can... I have very short duration:-(
Please.. Ans me as soon as you can... I have very short duration:-(
Can you give me the code to use both flame sensor and MQ2 gas sensor with this.
<p>Hello, does it works with SIM 800L also?? Thank you</p>
<p> Do you have code for SIM300</p><p>or will the same code works with SIM 300 GSM module?</p>
Does this work with human gas leakage?
<p>seriously??? :( </p>

About This Instructable




Bio: I make hobbyist stuffs and play with electronics follow me to know more https://www.facebook.com/arduinolabviewsolidworks https://twitter.com/learnrobotix
More by Magesh Jayakumar:Quick Start to Nodemcu (ESP8266) on Arduino IDE Course on MIT App Inventor and Arduino Hat for the Party 
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