from machine import Pin 
import utime
red=Pin(23,Pin.OUT)
green=Pin(22,Pin.OUT)
blue=Pin(21,Pin.OUT)
while True:
  #rojo
  red.value(1)
  green.value(1)
  blue.value(1)
  utime.sleep(2)
  #verde
  red.value(1)
  green.value(1)
  blue.value(1)
  utime.sleep(2)
  #azul  
  red.value(1)
  green.value(1)
  blue.value(1)
  utime.sleep(2)