# 5 LED Ping-Pong Motion
# ESP32 + MicroPython
# Custom Structured Version

from machine import Pin
import time

# Konfigurasi pin
pin_numbers = [23, 22, 21, 19, 18]
leds = [Pin(p, Pin.OUT) for p in pin_numbers]

total_led = len(leds)

position = 0
direction = 1   # 1 = maju, -1 = mundur
delay_time = 0.30  # detik

def turn_off_all():
    for led in leds:
        led.value(0)

while True:
    turn_off_all()
    leds[position].value(1)

    time.sleep(delay_time)

    position += direction

    # Jika sampai ujung, balik arah
    if position == total_led - 1 or position == 0:
        direction *= -1