int led = 13;

void setup() {
  pinMode(led, OUTPUT);
  Serial.begin(9600); // Aktifkan komunikasi serial
}

void loop() {
  digitalWrite(led, HIGH);         // LED ON
  Serial.println("Hello Nanda");   // Kirim data ke Serial Monitor
  delay(1000);                     // Tunggu 1 detik

  digitalWrite(led, LOW);            // LED OFF
  delay(1000);                       // Tunggu 1 detik
}