import machine
from neopixel import NeoPixel
from time import sleep_ms

#Crea un objeto led de la clase NeoPixel en el pin 16
led = NeoPixel(machine.Pin (13),16)

while True:
    for i in range (len(led)):
        led[i]=(255, 0, 0)
        led.write()
        sleep_ms(50)
        led[i]=(0, 0, 0)
        led.write()