const int LDRPin=A0;//Pin analog untuk LDR
const int LEDPin=5;//Pin digital untuk LED
void setup() {
  // put your setup code here, to run once:
pinMode( LEDPin,OUTPUT);
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
int nilaiLDR=analogRead( LDRPin);
Serial.println(nilaiLDR);
//Sesuaikan ambang batas cahaya sesuai kebutuhan
if (nilaiLDR < 500){digitalWrite(LEDPin, HIGH); //LED menyala
} else{digitalWrite(LEDPin, LOW);//LED mati
}
delay(1000); //delay 1 detik
}