int led = 11;             // pin 11 is a PWM pin
int brightness = 0;
int fadeAmount = 5;
int thisisnew = 0;

void setup ()
{
  pinMode (led, OUTPUT);
}

void loop()
{
  analogWrite(led, brightness);
  brightness = brightness + fadeAmount;
  
  if (brightness <= 0 || brightness >= 255) 
  {
    fadeAmount = -fadeAmount;
  }

  delay(30);
}