int led = 11;
int brillo1 = 0;
int brillo2 = 63;
int brillo3 = 85;
int brillo4 = 125;
int brillo5 = 255;
int tiempo = 600;
void setup() {
  // put your setup code here, to run once:
pinMode(led, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
analogWrite(led, brillo1);
delay(tiempo);
analogWrite(led, brillo2);
delay(tiempo);
analogWrite(led, brillo3);
delay(tiempo);
analogWrite(led, brillo4);
delay(tiempo);
analogWrite(led, brillo5);
delay(tiempo);
}