from machine import Pin
from time import sleep
led1 = Pin(5, Pin.OUT)
led2 = Pin(4, Pin.OUT)
led3 = Pin(2, Pin.OUT)
while True :
    led1.value(1)
    sleep(0.5)
    led1.value(0)
    led2.value(1)
    sleep(0.5)
    led2.value(0)
    led3.value(1)
    sleep(0.5)
    led3.value(0)


# print(("* " * 5 + "\n") * 5)