#define pinPir 2
#define pinRelay 3
int PirState = LOW;
int val = 0;
void setup(){
  pinMode(pinPir, INPUT);
  pinMode(pinRelay, OUTPUT);

  Serial.begin(9600);
}

void loop(){
  val = digitalRead(pinPir);
  if(val == HIGH){
    digitalWrite(pinRelay, HIGH);
    if (PirState == LOW){
      Serial.println("Ada Gerakan!");
      PirState = HIGH;
    }
  }
  else{
    digitalWrite(pinRelay, LOW);
    if(PirState == HIGH){
      Serial.println("Tidak ada Gerakan!");
      PirState = LOW;
    }
  }
}