int Pir = 20;
int statusPir = 0;
int ledYellow = 9;
int ledBlue = 4;

void setup() {
  // put your setup code here, to run once:
  Serial1.begin(115200);
  Serial1.println("Sistem pendeteksi gerak");
  pinMode(Pir, INPUT);
  pinMode(ledBlue, OUTPUT);
  pinMode(ledYellow, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  statusPir = digitalRead(Pir);
  if(statusPir == HIGH){
    digitalWrite(ledBlue, HIGH);
    digitalWrite(ledYellow, LOW);
    Serial1.println("Ada gerakan");
  }else{
    digitalWrite(ledBlue, LOW);
    digitalWrite(ledYellow, HIGH);
    Serial1.println("Tidak ada gerakan");
  }
  delay(3000); // this speeds up the simulation
}