const int pinled = 13;
void setup() {
  Serial.begin(9600);
  pinMode(pinled, OUTPUT);
  Serial.println("akan mulai bekerja");

  // put your setup code here, to run once:

}

void loop() {
  digitalWrite(pinled, HIGH);
  Serial.println("lampu menyala");
  delay(100);
  digitalWrite(pinled, LOW);
  Serial.print("lampu mati");
  delay(100);
  // put your main code here, to run repeatedly:

}