int PirPin = 13;
int ledbilu = 12;

void setup() {
pinMode(PirPin, INPUT);
Serial.begin(9600);
pinMode(ledbilu, OUTPUT);
digitalWrite(ledbilu, LOW);}

void loop() 
{
 digitalWrite(ledbilu, HIGH);
 delay(1000);
 int PirNilai = digitalRead(PirPin);
 if(PirNilai == 0)
{ Serial.println("Objek Terdeteksi!");
  delay(1000); } 
else
{ digitalWrite(ledbilu, LOW);
  delay(1000);
  Serial.println("Objek Tidak Terdeteksi!");
  delay(1000); }
}