#define LDR_PIN A0        
#define GAS_PIN A1         
#define FLAME_PIN 6        
#define LED_PIN 3          
#define BUZZER_PIN 4       // Alarm

void setup() {
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(FLAME_PIN, INPUT);
  Serial.begin(9600);
}

void loop() {
  int lightLevel = analogRead(LDR_PIN);      
  int gasLevel = analogRead(GAS_PIN);        
  int flameState = digitalRead(FLAME_PIN);   
  if (lightLevel < 400) {
    digitalWrite(LED_PIN, HIGH);
  } else {
    digitalWrite(LED_PIN, LOW);
  }

  
  if (gasLevel > 400 || flameState == LOW) {
    digitalWrite(BUZZER_PIN, HIGH);
  } else {
    digitalWrite(BUZZER_PIN, LOW);
  }

  delay(300); // Small delay to keep simulation stable
}