const int pirPin = 2;
const int relayPin = 15;
const int pirState = LOW;

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

void loop() {
  // put your main code here, to run repeatedly:
  int pirState = digitalRead (pirPin);
  if (pirState == HIGH){
    digitalWrite(relayPin, HIGH);
    Serial.println ("gerakan terdekteksi");
}

else {
  digitalWrite (relayPin, LOW);
  Serial.println ("gerakan tidak terdeteksi");
}
delay (1000);
}