from machine import Pin
import time

# Definisi 10 pin LED (GP2 - GP11)
led_pins = [2, 3, 4, 5, 6, 7, 8, 9, 10, 11]
leds = [Pin(p, Pin.OUT) for p in led_pins]

def all_off():
    for led in leds:
        led.low()

def running_forward(delay=0.1):
    for i in range(len(leds)):
        all_off()
        leds[i].high()
        time.sleep(delay)

def running_backward(delay=0.1):
    for i in range(len(leds) - 1, -1, -1):
        all_off()
        leds[i].high()
        time.sleep(delay)

def running_bounce(delay=0.1):
    running_forward(delay)
    running_backward(delay)

while True:
    running_bounce(0.1)   # Maju mundur