#define LED_PIN 18

int brightness = 0;
int fadeAmount = 5;

void setup() {
  // put your setup code here, to run once:
  pinMode(LED_PIN, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  // Blink 
  // digitalWrite(18, HIGH); // turn the LED on
  // delay(500);             // wait for 500 milliseconds
  // digitalWrite(18, LOW);  // turn the LED off
  // delay(500);             // wait for 500 milliseconds

  // Fade
  // analogWrite(LED_PIN, brightness);

  // brightness += fadeAmount;

  // if(brightness <= 0 || brightness >= 255)
  // {
  //   fadeAmount = -fadeAmount;
  // }

  // delay(30);

}