// Simple Blink Example for Arduino

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);   // Set the built-in LED pin as OUTPUT
}

void loop() {
  digitalWrite(LED_BUILTIN, HIGH); // Turn the LED on
  delay(1000);                     // Wait 1 second (1000 ms)

  digitalWrite(LED_BUILTIN, LOW);  // Turn the LED off
  delay(1000);                     // Wait 1 second
}