from machine import *
from utime import sleep

lred = Pin(1, Pin.OUT)
lgreen = Pin(5, Pin.OUT)
lblue = Pin(9, Pin.OUT)

while True:
    lred.on()
    sleep(1)
    lred.off()
    
    lgreen.on()
    sleep(1)
    lred.off()

    lblue.on()
    sleep(1)
    lgreen.off()