import board
import neopixel
import time
import analogio
cadena = neopixel.NeoPixel(board.D8, 1, brightness=0.3)
sensor = analogio.AnalogIn(board.A1)
while True:
    lectura = sensor.value
    color = lectura//256
    print(lectura)
    cadena[0] = (color, 0, 255-color)
    time.sleep(1)