int pirpin = 4;
int PIRstatus = 0;
int Pinbuzzer = 13;

void setup() {
  // put your setup code here, to run once: 
  pinMode(4, INPUT);
  pinMode(13, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly: 
PIRstatus = digitalRead(pirpin);
if(PIRstatus == HIGH){
  Serial.println("Gerakan terdeteksi");
  tone(Pinbuzzer, 1000, 500); 
}
else {
  Serial.println("tidak ada gerakan");
}
delay(500);
}