from machine import Pin, PWM
from utime import sleep

class LED:
    def __init__(self,pin_led):
        self.pin_led=PWM(Pin(pin_led,Pin.OUT))
        self.pin_led.freq(1000)
        
    def brillo (self,tiempo):
            for duty in range (0,65535,256):
                self.pin_led.duty_u16(duty)
                sleep(tiempo)
            
            for duty in range (65535,0,-256):
                self.pin_led.duty_u16(duty)
                sleep(tiempo)

ROJO = LED(12)
AZUL = LED(14)
VERDE = LED(27)
AMARILLO = LED(26)

while True :
    ROJO.brillo(0.003)