const int pir = 5;
const int led = 4;
void setup() {
  // put your setup code here, to run once:
  pinMode(pir, INPUT);
  pinMode(led, OUTPUT);
}

void loop() {
  int PIRValue = digitalRead(pir);
  if(PIRValue==1){
    digitalWrite(led,HIGH);
    delay(1000);
  }
  else{
    digitalWrite(led,LOW);
    delay(1000);
  }
}