byte ldr = A5;
byte led = 9;
int nilai;

void loop() {
  // put your main code here, to run repeatedly:
  Serial.begin(9600);
  Serial.println(nilai);

}

void loop() {
  // put your main code here, to run repeatedly:
  nilai = analogRead(ldr)
  Serial.print("Nilai LDR : ");
  Serial. println(nilai);

 if(nilai < 500){
   digitalWrite(led, HIGH);
   Serial.println("keadaan gelap, lampu menyala");
 } else{
    digitalWrite(led, LOW);
    Serial.println("keadaan terang, lampu mati");
 }
}