from machine import Pin
import time

# กำหนด GPIO 2 ขาจ่าย OUTPUT
led2 = Pin (2 , Pin.OUT)
led4 = Pin (4 , Pin.OUT)
led4.value(1)
while True:
    led2.value(1)
    time.sleep(1)
    led2.value(0)
    time.sleep(1)