Gas leakage Detector system

In case of gas leakage, buzzer gives alarm and the user will get a message on their phone. The LCD will be displaying gas value throughout.

Apr 7, 2021

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22059 views

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7 respects

smart appliances

internet of things

monitoring

Components and supplies

4.7 kohm

5 mm LED: Green

Breadboard (generic)

Gboard Pro 800 SIM800 GSM / GPRS Module 3.3v ATmega2560 Mainboard For Arduino Starter

5 mm LED: Red

Jumper wires (generic)

Grove - Gas Sensor(MQ2)

Arduino UNO

Alphanumeric LCD, 16 x 2

Resistor 100 ohm

Buzzer

Through Hole Resistor, 1 kohm

Apps and platforms

Arduino IDE

Project description

Code

code

arduino

1#include <LiquidCrystal.h>
2LiquidCrystal lcd(2,3,4,5,6,7);
3#include   <SoftwareSerial.h>
4 
5SoftwareSerial mySerial(9, 10);
6 
7int gasValue   = A0; // smoke / gas sensor connected with analog pin A1 of the arduino / mega.
8int   data = 0;
9int buzzer = 13;
10int G_led = 8; // choose the pin for the Green   LED
11int R_led = 9; // choose the pin for the Red Led
12
13
14 
15void setup()
16{
17   pinMode(buzzer,OUTPUT);
18  pinMode(R_led,OUTPUT); // declare Red LED as output
19   pinMode(G_led,OUTPUT); // declare Green LED as output
20randomSeed(analogRead(0));
21mySerial.begin(9600);   // Setting the baud rate of GSM Module
22Serial.begin(9600); // Setting the baud   rate of Serial Monitor (Arduino)
23lcd.begin(16,2);
24pinMode(gasValue, INPUT);
25lcd.print   (" Gas Leakage ");
26lcd.setCursor(0,1);
27lcd.print (" Detector Alarm ");
28delay(3000);
29lcd.clear();
30}
31   
32void loop()
33{
34 
35data = analogRead(gasValue);
36Serial.print("Gas   Level: ");
37Serial.println(data);
38lcd.print ("Gas Scan is ON");
39lcd.setCursor(0,1);
40lcd.print("Gas   Level: ");
41lcd.print(data);
42delay(1000);
43 
44if ( data > 90) //
45{
46   digitalWrite(buzzer, HIGH);
47  digitalWrite(R_led, HIGH); // Turn LED on.
48   digitalWrite(G_led, LOW); // Turn LED off.
49SendMessage();
50Serial.print("Gas   detect alarm");
51lcd.clear();
52lcd.setCursor(0,0);
53lcd.print("Gas Level   Exceed");
54lcd.setCursor(0,1);
55lcd.print("SMS Sent");
56
57delay(1000);
58   
59}
60else
61{
62  digitalWrite(buzzer, LOW);
63  digitalWrite(R_led, LOW);   // Turn LED off.
64  digitalWrite(G_led, HIGH); // Turn LED on.
65Serial.print("Gas   Level Low");
66lcd.clear();
67lcd.setCursor(0,0);
68lcd.print("Gas Level Normal");
69
70delay(1000);
71}
72   
73lcd.clear();
74}
75 
76void SendMessage()
77{
78Serial.println("I am in   send");
79mySerial.println("AT+CMGF=1"); //Sets the GSM Module in Text Mode
80delay(1000);   // Delay of 1000 milli seconds or 1 second
81mySerial.println("AT+CMGS=\\"+91xxxxxxxxxx\\"\
");   // Replace x with mobile number
82delay(1000);
83mySerial.println("Excess Gas   Detected.");// The SMS text you want to send
84mySerial.println(data);
85delay(100);
86mySerial.println((char)26);//   ASCII code of CTRL+Z
87delay(1000);
88}
89

#include <LiquidCrystal.h>
LiquidCrystal lcd(2,3,4,5,6,7);
#include   <SoftwareSerial.h>
 
SoftwareSerial mySerial(9, 10);
 
int gasValue   = A0; // smoke / gas sensor connected with analog pin A1 of the arduino / mega.
int   data = 0;
int buzzer = 13;
int G_led = 8; // choose the pin for the Green   LED
int R_led = 9; // choose the pin for the Red Led


 
void setup()
{
   pinMode(buzzer,OUTPUT);
  pinMode(R_led,OUTPUT); // declare Red LED as output
   pinMode(G_led,OUTPUT); // declare Green LED as output
randomSeed(analogRead(0));
mySerial.begin(9600);   // Setting the baud rate of GSM Module
Serial.begin(9600); // Setting the baud   rate of Serial Monitor (Arduino)
lcd.begin(16,2);
pinMode(gasValue, INPUT);
lcd.print   (" Gas Leakage ");
lcd.setCursor(0,1);
lcd.print (" Detector Alarm ");
delay(3000);
lcd.clear();
}
   
void loop()
{
 
data = analogRead(gasValue);
Serial.print("Gas   Level: ");
Serial.println(data);
lcd.print ("Gas Scan is ON");
lcd.setCursor(0,1);
lcd.print("Gas   Level: ");
lcd.print(data);
delay(1000);
 
if ( data > 90) //
{
   digitalWrite(buzzer, HIGH);
  digitalWrite(R_led, HIGH); // Turn LED on.
   digitalWrite(G_led, LOW); // Turn LED off.
SendMessage();
Serial.print("Gas   detect alarm");
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Gas Level   Exceed");
lcd.setCursor(0,1);
lcd.print("SMS Sent");

delay(1000);
   
}
else
{
  digitalWrite(buzzer, LOW);
  digitalWrite(R_led, LOW);   // Turn LED off.
  digitalWrite(G_led, HIGH); // Turn LED on.
Serial.print("Gas   Level Low");
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Gas Level Normal");

delay(1000);
}
   
lcd.clear();
}
 
void SendMessage()
{
Serial.println("I am in   send");
mySerial.println("AT+CMGF=1"); //Sets the GSM Module in Text Mode
delay(1000);   // Delay of 1000 milli seconds or 1 second
mySerial.println("AT+CMGS=\\"+91xxxxxxxxxx\\"\
");   // Replace x with mobile number
delay(1000);
mySerial.println("Excess Gas   Detected.");// The SMS text you want to send
mySerial.println(data);
delay(100);
mySerial.println((char)26);//   ASCII code of CTRL+Z
delay(1000);
}

code

arduino

1#include <LiquidCrystal.h>
2LiquidCrystal lcd(2,3,4,5,6,7);
3#include  <SoftwareSerial.h>
4 
5SoftwareSerial mySerial(9, 10);
6 
7int gasValue  = A0; // smoke / gas sensor connected with analog pin A1 of the arduino / mega.
8int  data = 0;
9int buzzer = 13;
10int G_led = 8; // choose the pin for the Green  LED
11int R_led = 9; // choose the pin for the Red Led
12
13
14 
15void setup()
16{
17  pinMode(buzzer,OUTPUT);
18  pinMode(R_led,OUTPUT); // declare Red LED as output
19  pinMode(G_led,OUTPUT); // declare Green LED as output
20randomSeed(analogRead(0));
21mySerial.begin(9600);  // Setting the baud rate of GSM Module
22Serial.begin(9600); // Setting the baud  rate of Serial Monitor (Arduino)
23lcd.begin(16,2);
24pinMode(gasValue, INPUT);
25lcd.print  (" Gas Leakage ");
26lcd.setCursor(0,1);
27lcd.print (" Detector Alarm ");
28delay(3000);
29lcd.clear();
30}
31  
32void loop()
33{
34 
35data = analogRead(gasValue);
36Serial.print("Gas  Level: ");
37Serial.println(data);
38lcd.print ("Gas Scan is ON");
39lcd.setCursor(0,1);
40lcd.print("Gas  Level: ");
41lcd.print(data);
42delay(1000);
43 
44if ( data > 90) //
45{
46  digitalWrite(buzzer, HIGH);
47  digitalWrite(R_led, HIGH); // Turn LED on.
48  digitalWrite(G_led, LOW); // Turn LED off.
49SendMessage();
50Serial.print("Gas  detect alarm");
51lcd.clear();
52lcd.setCursor(0,0);
53lcd.print("Gas Level  Exceed");
54lcd.setCursor(0,1);
55lcd.print("SMS Sent");
56
57delay(1000);
58  
59}
60else
61{
62  digitalWrite(buzzer, LOW);
63  digitalWrite(R_led, LOW);  // Turn LED off.
64  digitalWrite(G_led, HIGH); // Turn LED on.
65Serial.print("Gas  Level Low");
66lcd.clear();
67lcd.setCursor(0,0);
68lcd.print("Gas Level Normal");
69
70delay(1000);
71}
72  
73lcd.clear();
74}
75 
76void SendMessage()
77{
78Serial.println("I am in  send");
79mySerial.println("AT+CMGF=1"); //Sets the GSM Module in Text Mode
80delay(1000);  // Delay of 1000 milli seconds or 1 second
81mySerial.println("AT+CMGS=\\"+91xxxxxxxxxx\\"\
");  // Replace x with mobile number
82delay(1000);
83mySerial.println("Excess Gas  Detected.");// The SMS text you want to send
84mySerial.println(data);
85delay(100);
86mySerial.println((char)26);//  ASCII code of CTRL+Z
87delay(1000);
88}
89

#include <LiquidCrystal.h>
LiquidCrystal lcd(2,3,4,5,6,7);
#include  <SoftwareSerial.h>
 
SoftwareSerial mySerial(9, 10);
 
int gasValue  = A0; // smoke / gas sensor connected with analog pin A1 of the arduino / mega.
int  data = 0;
int buzzer = 13;
int G_led = 8; // choose the pin for the Green  LED
int R_led = 9; // choose the pin for the Red Led


 
void setup()
{
  pinMode(buzzer,OUTPUT);
  pinMode(R_led,OUTPUT); // declare Red LED as output
  pinMode(G_led,OUTPUT); // declare Green LED as output
randomSeed(analogRead(0));
mySerial.begin(9600);  // Setting the baud rate of GSM Module
Serial.begin(9600); // Setting the baud  rate of Serial Monitor (Arduino)
lcd.begin(16,2);
pinMode(gasValue, INPUT);
lcd.print  (" Gas Leakage ");
lcd.setCursor(0,1);
lcd.print (" Detector Alarm ");
delay(3000);
lcd.clear();
}
  
void loop()
{
 
data = analogRead(gasValue);
Serial.print("Gas  Level: ");
Serial.println(data);
lcd.print ("Gas Scan is ON");
lcd.setCursor(0,1);
lcd.print("Gas  Level: ");
lcd.print(data);
delay(1000);
 
if ( data > 90) //
{
  digitalWrite(buzzer, HIGH);
  digitalWrite(R_led, HIGH); // Turn LED on.
  digitalWrite(G_led, LOW); // Turn LED off.
SendMessage();
Serial.print("Gas  detect alarm");
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Gas Level  Exceed");
lcd.setCursor(0,1);
lcd.print("SMS Sent");

delay(1000);
  
}
else
{
  digitalWrite(buzzer, LOW);
  digitalWrite(R_led, LOW);  // Turn LED off.
  digitalWrite(G_led, HIGH); // Turn LED on.
Serial.print("Gas  Level Low");
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Gas Level Normal");

delay(1000);
}
  
lcd.clear();
}
 
void SendMessage()
{
Serial.println("I am in  send");
mySerial.println("AT+CMGF=1"); //Sets the GSM Module in Text Mode
delay(1000);  // Delay of 1000 milli seconds or 1 second
mySerial.println("AT+CMGS=\\"+91xxxxxxxxxx\\"\
");  // Replace x with mobile number
delay(1000);
mySerial.println("Excess Gas  Detected.");// The SMS text you want to send
mySerial.println(data);
delay(100);
mySerial.println((char)26);//  ASCII code of CTRL+Z
delay(1000);
}

Downloadable files

block diagram

circuit diagram

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