//Inisialisasi pin
int ledPin = 13;
int ldrPin = A0;

void setup() {
  Serial.begin(9600);
  pinMode(ledPin, OUTPUT);
  pinMode(ldrPin, INPUT);
}

void loop() {
  //Membaca nilai input analog
  int ldrStatus = analogRead(ldrPin);

  //Pengujian kondisi
  if (ldrStatus <= 200){
    digitalWrite(ledPin, HIGH);
    Serial.print("Gelap, LED hidup : ");
    Serial.println(ldrStatus);
  }else{
    digitalWrite(ledPin, LOW);
    Serial.print("Terang, LED mati : ");
    Serial.println(ldrStatus);
  }
}