#define PIR_SENSOR_PIN 34 
#define PUSH_BUTTON_PIN_1 2 
#define PUSH_BUTTON_PIN_2 3 
#define BUZZER_PIN 26 

void setup() {
  Serial.begin(115200);

  // Initialize sensor pins
  pinMode(PIR_SENSOR_PIN, INPUT);
  pinMode(PUSH_BUTTON_PIN_1, INPUT_PULLUP); // Using internal pull-up resistor
  pinMode(PUSH_BUTTON_PIN_2, INPUT_PULLUP); // Using internal pull-up resistor
  // Initialize buzzer pin
  pinMode(BUZZER_PIN, OUTPUT);
  digitalWrite(BUZZER_PIN, LOW); // Turn off buzzer initially
}

void loop() {
  // Read sensor inputs
  int motionDetected = digitalRead(PIR_SENSOR_PIN);
  int doorOpened = digitalRead(PUSH_BUTTON_PIN_1) == LOW || digitalRead(PUSH_BUTTON_PIN_2) == LOW;

  
  if (motionDetected == HIGH || doorOpened) {
    Serial.println("Intrusion detected! Activating alarm...");

    //  turn on buzzer
    digitalWrite(BUZZER_PIN, HIGH);
    
    delay(5000); // Alarm duration 
    
    // Turn off buzzer after alarm duration
    digitalWrite(BUZZER_PIN, LOW);
    
    Serial.println("Alarm deactivated.");
  } else {
    Serial.println("No intrusion detected.");
    digitalWrite(BUZZER_PIN, LOW); // Turn off buzzer
  }

  delay(1000); // Delay before next sensor check
}