int ldr =A0;
int led =13;
int led2 =12;

void setup() {
pinMode(ldr, INPUT);
pinMode(led, OUTPUT);
pinMode(led2, OUTPUT);
Serial.begin(9600);

}
void loop() {
int nilai = analogRead(ldr);
Serial.println("nilai sensor: ");
Serial.println(nilai);
delay(500);
if(nilai <500) {
digitalWrite(led, HIGH);
delay(500);
digitalWrite(led, LOW);
delay(500);
digitalWrite(led2, HIGH);
delay(500);
digitalWrite(led2, LOW);
delay(500);
Serial.println("lampu hidup");
}else{
digitalWrite(led, LOW);
Serial.println("lampu hidup");
}
}