int buzzer = 2;
int inputPin = 15;
int pirState = LOW;
int val = 0;
int ledmerah = 4;
int ledhijau = 5; 

void setup() {
 pinMode(buzzer, OUTPUT);
 pinMode(inputPin, INPUT);
 pinMode(ledmerah, OUTPUT);     
 pinMode(ledhijau, OUTPUT);
 Serial.begin(9600);
}

void loop() {
  val = digitalRead(inputPin);  
  if (val == HIGH) {            
    digitalWrite(ledmerah, HIGH);
    //digitalWrite(ledhijau, LOW);
    digitalWrite(buzzer, HIGH);
    tone (buzzer, 1000, 100);
    delay (500);
    if (pirState == LOW) {
      Serial.println("Gerakan Asing Terdeteksi!");
      pirState = HIGH;
    }
  } else {
    if (pirState == HIGH) {
      digitalWrite(ledmerah, LOW);
      digitalWrite(ledhijau, HIGH);
      digitalWrite(buzzer, LOW);
      Serial.println("Aman !");
      pirState = LOW;
    }
  }
  // Memutar nada 1000Hz selama 0,100 detik dengan delay 1/2 detik
  //delay(500); 
  //memberikan jeda waktu untuk program selanjutnya selama 1/2 detik
}