Sahil

 #include <Servo.h>

// Pin definitions

const int mq2Pin 2; // Digital pin for MQ-2 sensor

const int buzzerPin = 3; // Digital pin for buzzer

const int relayPin 4; // Digital pin for relay module

const int servoPin 5; // Digital pin for servo motor

Servo myservo; // Create servo object

void setup() {

pinMode (mq2Pin, INPUT);

pinMode(buzzerPin, OUTPUT);

pinMode(relayPin, OUTPUT);

myservo.attach(servoPin); // Attaching the servo motor

// Set initial states

deactivateAlarm();

deactivateRelay();

myservo.write(8); // Start with servo at e degrees

}

void loop() {

// Reading from MQ-2 sensor

int gasValue digitalRead(mq2Pin);

// If gas is detected

if (gasValue == LOW) {

activateAlarm();

activateRelay();

// Activate alarm

// Activate relay module

turnServoTo90();

// Turn on servo motor to 90 degrees

} else {

deactivateAlarm();

deactivateRelay();

resetServo();

}

}void activateAlarm() {

// Deactivate alarm

//Deactivate relay module

// Reset servo motor to a degrees

digitalWrite(buzzerPin, HIGH); // Turn on buzzer

}

void deactivateAlarm() [

digitalWrite(buzzerPin, LOW); // Turn off buzzer

void activateRelay() (

digitalWrite(relayPin, LOW); // Activate relay module

void deactivateRelay() {

digitalWrite(relayPin, HIGH); // Deactivate relay module

void turnServoTo90() (

myservo.write(90); // Rotate servo motor to 90 degrees

delay(500);

}

// Allow some time for the servo to move

void resetServo() {

myservo.write(0); // Rotate servo motor to e degrees

delay(500);

}

// Allow some time for the serve to reset

}