/*
  Blink Onboard LED every second (toggles every 500ms)
*/


void setup() {
  
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(LED_BUILTIN, OUTPUT);

}

void loop() {
  digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)
  delay(500); // wait for a 500 ms

  digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW
  delay(500); // wait for a 500 ms
}