import board
import time
import analogio
import random
import neopixel
led = neopixel.NeoPixel(board.D8, 1, brightness=0.3)
ruido = analogio.AnalogIn(board.A3)
random.seed(ruido.value)
while True:
    aleat = random.randint(0, 255)
    led[0] = (aleat, 0, 0)
    time.sleep(0.5)