// Dimmer Incremental y Decremental Led respira
 

  int LEDPWM = 3;
  int PWM = 0;

void setup() {
  Serial.begin (9600);
  pinMode (LEDPWM, OUTPUT);
}

void loop() {
  while (PWM<256){
    analogWrite (LEDPWM, PWM);
    Serial.println (PWM);
    Serial.print("\n");
    PWM ++;
    
    }
    //delay (2000);
  while (PWM>=0){
    analogWrite (LEDPWM, PWM);
    Serial.println (PWM);
    PWM --;
    }
    //delay (2000);
 }