#! /usr/bin/env python3
import board
import neopixel
import time


def main():
    pixels = neopixel.NeoPixel(board.D21, 30, brightness=0.2, auto_write=False)
    for i in range(0, 300):
        pixels[i] = (100, 0, 0)
        pixels.show()
        time.sleep(2)
        print("ok\n")


if __name__ == "__main__":
	main()