Gas Leakage Detector with gsm

 

In this tutorial we will learn how to make a GAS LEAKAGE DETECTOR  to protect your home from a big explosion

USE OF THIS CIRCUIT

This is very usefull circuit to protect your home from a big explosion because when the gas leaks the sensor used in this circuit recognise it and make sound (if you are using buzzer)

THINGS NEEDED

* Arduino  : https://amzn.to/40m7UpN

* Gas Sensor (I am using MQ-6 Gas Sensor) : https://amzn.to/41n8Co2

*LED or Buzzer

* GSM900a : https://amzn.to/43Bs5Tg

CIRCUIT

Gas Sensor :    VCC to VCC

                           GND to GND

                           A0 to A0

LED :               Positive to Pin13

                         Negative to GND

GSM900a  :    5vt to D9

                        5vr to D10

                        Negative to GND

 

CODE

///https://dreamprojectsnow.blogspot.com/
//DREAM PROJECT MALAYALAM
#include 
#include <SoftwareSerial.h>


SoftwareSerial mySerial(9, 10);
char msg;
char call;

int buzzer = 13;
int smokeA0 = A0;//gas sensor pin number
int sensorThres = 600; // Your threshold value

void setup() {
  mySerial.begin(9600);   // Setting the baud rate of GSM Module  
  Serial.begin(9600); 
  pinMode(buzzer, OUTPUT);
  pinMode(smokeA0, INPUT);
  Serial.begin(9600);
}

void loop() {

  int analogSensor = analogRead(smokeA0);

  Serial.print("Pin A0: ");
  Serial.println(analogSensor);
  // Checks if it has reached the threshold value
  if (analogSensor > sensorThres)
  {
  digitalWrite(buzzer, HIGH);    
  mySerial.println("ATD+91xxxxxxxxxx;"); //calling AT command
  Serial.println("Calling  ");
  delay(1000);
  }
  else
  {
    digitalWrite(buzzer, LOW);
  }
  delay(100);
}

If your circuit is not working rotate the screw behind the sensor or change the value in 
the code according to your sensor output 

Detailed video  
 

 
Thank you