void setup() {
  pinMode(2, OUTPUT);  // Initialize the built-in LED pin (GPIO 2) as an output
  Serial.begin(115200);  // Start serial communication
}

void loop() {
  digitalWrite(2, HIGH);  // Turn the LED on
  delay(1000);             // Wait for a second
  digitalWrite(2, LOW);   // Turn the LED off
  delay(1000);             // Wait for a second
  Serial.println("LED is blinking!");  // Debug message
}