import time 전체 led동시에 깜빡이기
from machine import Pin


# 핀 개별 설정
led1 = Pin(16, Pin.OUT)
led2 = Pin(17, Pin.OUT)
led3 = Pin(18, Pin.OUT)
led4 = Pin(19, Pin.OUT)
led5 = Pin(20, Pin.OUT)

leds = [led1, led2, led3, led4, led5]

while True:
    # 왼쪽 → 오른쪽
    for led in leds:
        led.value(1)   # LED 켜기
        time.sleep(0.1)
        led.value(0)   # LED 끄기
        time.sleep(0.1)

    # 오른쪽 → 왼쪽
    for led in reversed(leds):
        led.value(1)
        time.sleep(0.1)
        led.value(0)
        time.sleep(0.1)

      for _ in range(2):
        for led in leds:
            led.value(1) 
        time.sleep(0.2)
        all_off(0)        
        time.sleep(0.2)
        
    time.sleep(0.5)