void setup() {
  Serial.begin(9600);
  pinMode(LED_BUILTIN, OUTPUT);  // Initialize the LED_BUILTIN pin as an output
  Serial.println("Setup complete");
}

void loop() {
  digitalWrite(LED_BUILTIN, HIGH);   // Turn the LED on
  Serial.println("LED ON");
  delay(100);                       // Wait for 1 second
  digitalWrite(LED_BUILTIN, LOW);    // Turn the LED off
  Serial.println("LED OFF");
  delay(100);                       // Wait for 1 second
}