from machine import Pin
import utime

ledverde=Pin(5,Pin.OUT)
ledamarillo=Pin(9,Pin.OUT)
ledrojo=Pin(13,Pin.OUT)
lverde=Pin(28,Pin.OUT)
lamarillo=Pin(22,Pin.OUT)
lrojo=Pin(18,Pin.OUT)

while True:
    lrojo.on()
    ledverde.on()
    utime.sleep(3)
    ledverde.off()
    ledamarillo.on()
    utime.sleep(3)
    ledamarillo.off()
    lrojo.off()


    ledrojo.on()
    lverde.on()
    utime.sleep(3)
    lverde.off()
    lamarillo.on()
    utime.sleep(3)
    lamarillo.off()
    ledrojo.off()