import neopixel
from machine import Pin
import random
import time

NUM_LED = 24 
leds = neopixel.NeoPixel(Pin(15), NUM_LED)

while True:
  
    selected_led = random.randint(0, NUM_LED - 1)
    
   
    for i in range(NUM_LED):
        leds.fill((0, 0, 0))  
        leds[selected_led] = (28, 123, 172)  
        leds.write()
        selected_led = (selected_led + 1) % NUM_LED
        time.sleep(0.001)
    
 
    time.sleep(2)
    leds.fill((0, 0, 0))  
    leds.write()
    
  
    time.sleep(0)