const int pirPin = 14;
const int buzzerPin = 27;
const int ledPin = 26;

bool motionDetected = false;

void setup() {
  // Set up the pins
  pinMode(pirPin, INPUT);
  pinMode(buzzerPin, OUTPUT);
  pinMode(ledPin, OUTPUT);
  
  // Start with everything off
  digitalWrite(buzzerPin, LOW);
  digitalWrite(ledPin, LOW);
}

void loop() {
  // Read the PIR sensor
  motionDetected = digitalRead(pirPin);
  
  if (motionDetected) {
    for (int i = 0; i < 10; i++) {
      // Activate the buzzer with alternating tones
      ledFlashTone(1000, 100); // 1000 Hz tone for 100 ms with LED flashing
      ledFlashTone(1500, 100); // 1500 Hz tone for 100 ms with LED flashing
    }
  }
  
  delay(100);  // Small delay to prevent bouncing
}

void ledFlashTone(int frequency, int duration) {
  tone(buzzerPin, frequency);  // Set buzzer frequency
  digitalWrite(ledPin, HIGH);  // LED on
  delay(duration);
  noTone(buzzerPin);           // Turn off buzzer
  digitalWrite(ledPin, LOW);   // LED off
  delay(duration);
}