Serial Communication Tutorial

500 italic">// LED Blink Example for Arduino
500 italic">// This code makes the built-in LED blink

void setup() {
  500 italic">// Initialize digital pin LED_BUILTIN as an output
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop() {
  digitalWrite(LED_BUILTIN, HIGH);  500 italic">// Turn the LED on
  delay(1000);                      500 italic">// Wait for a second
  digitalWrite(LED_BUILTIN, LOW);   500 italic">// Turn the LED off
  delay(1000);                      500 italic">// Wait for a second
}