Arduino Gas Leakage and Flame Detection With Alert System

1#include <Servo.h>
2
3Servo servoMotor;
4
5#define LEFT_FLAME 2
6#define RIGHT_FLAME 3
7#define SERVO_PIN 9
8
9void setup() {
10  pinMode(LEFT_FLAME, INPUT);
11  pinMode(RIGHT_FLAME, INPUT);
12  
13  servoMotor.attach(SERVO_PIN);
14  servoMotor.write(90);  // start centered
15  delay(500);
16}
17
18void loop() {
19  int leftState = digitalRead(LEFT_FLAME);
20  int rightState = digitalRead(RIGHT_FLAME);
21
22  // Note: LOW = Flame detected, HIGH = No flame
23  if (leftState == LOW && rightState == HIGH) {
24    // Left flame detected
25    servoMotor.write(0);   // Move extreme left
26  }
27  else if (rightState == LOW && leftState == HIGH) {
28    // Right flame detected
29    servoMotor.write(180); // Move extreme right
30  }
31  else if (leftState == LOW && rightState == LOW) {
32    // Flame detected on both sides (center)
33    servoMotor.write(90);
34  }
35  else {
36    // No flame
37    servoMotor.write(90);
38  }
39
40  delay(100);
41}