from machine import Pin
import time

led = Pin(27,Pin.OUT)
led2 = Pin(28,Pin.OUT)
led3 = Pin(26,Pin.OUT)


while True:
    led.value(1)
    time.sleep(1)

    led.value(0)
    time.sleep(1)

    led2.value(1)
    time.sleep(1)

    led2.value(0)
    time.sleep(1)

    led3.value(1)
    time.sleep(1)

    led3.value(0)
    time.sleep(1)