void setup() {
  pinMode(13, OUTPUT);        // Set pin 13 as output
  Serial.begin(115200);         // Start serial communication at 9600 baud
}

void loop() {
  digitalWrite(13, HIGH);     // Turn the LED on
  Serial.println("LED ON");   // Print status
  delay(1000);                // Wait 1 second

  digitalWrite(13, LOW);      // Turn the LED off
  Serial.println("LED OFF");  // Print status
  delay(1000);                // Wait 1 second
}