#define PIR_PIN   13
#define BUZZER    12
#define LED_PIN   14

void setup() {
  pinMode(PIR_PIN, INPUT);
  pinMode(BUZZER, OUTPUT);
  pinMode(LED_PIN, OUTPUT);
  Serial.begin(115200);
}

void loop() {
  int motionState = digitalRead(PIR_PIN);

  if (motionState == HIGH) {
    Serial.println("Motion Detected!");
    digitalWrite(BUZZER, HIGH);
    digitalWrite(LED_PIN, HIGH);
    delay(3000);
  } 
  else {
    digitalWrite(BUZZER, LOW);
    digitalWrite(LED_PIN, LOW);
  }
}