#define pinPIR 2
#define pinRelay 3

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

void loop() {
  // put your main code here, to run repeatedly:
int nilaiPIR = digitalRead(pinPIR);
if (nilaiPIR == 1){
  digitalWrite(pinRelay, HIGH);
  Serial.print("Ada Gerakan : ");
  Serial.println(nilaiPIR);
} else {
  digitalWrite(pinRelay, LOW);
  Serial.println("Tidak ada gerakan");
  }
  delay(100);
}