from machine import pin
import time

led = pin(1, pin.OUT)
led2 = pin(9, pin.OUT)
led3 = pin(14, pin.OUT)

while True:
    led.value(1)
    time.sleep(2)

    led.value(0)
    time.sleep(2)
    led.value(1)
    time.sleep(2)
    led.value(0)
    time.sleep(2)
    led.value(1)
    time.sleep(2)
    led.value(0)
    time.sleep(2)