from machine import Pin        # Akses pin GPIO
from time import sleep         # Fungsi sleep untuk memberi jeda waktu

# Inisialisasi pin untuk masing-masing LED
ledControl1 = Pin(13, Pin.OUT)  # LED pertama
ledControl2 = Pin(14, Pin.OUT)  # LED kedua
ledControl3 = Pin(27, Pin.OUT)  # LED ketiga
ledControl4 = Pin(16, Pin.OUT)  # LED keempat
ledControl5 = Pin(17, Pin.OUT)  # LED kelima

# Simpan LED dalam list agar lebih mudah diakses
leds = [ledControl1, ledControl2, ledControl3, ledControl4, ledControl5]

# Loop utama
while True:
    # Gerak maju: LED 1 → 5
    for i in range(5):  # index 0,1,2,3,4
        for led in leds:
            led.off()
        leds[i].on()
        sleep(0.25)

    # Gerak mundur: LED 4 → 1
    for i in range(3, -1, -1):  # index 3,2,1,0 (tanpa 4 agar tidak nyala dua kali)
        for led in leds:
            led.off()
        leds[i].on()
        sleep(0.25)