from machine import Pin
import time
import neopixel

PIN  =       13
NUMPIXELS =  64          # NeoPixel ring size
pixDELAY  =  100         # Delay for pixel persistence


def function(AA, NN, BB):
  x = AA * NN + BB
  pixels[x-1] = (255, 0, 0)

# Start Function
if __name__ == '__main__':
  pixels = neopixel.NeoPixel(Pin(PIN), NUMPIXELS)

  for n in range(0,8):
    a=8
    b=0
    function(a, n, b)

    a=8
    b=1
    function(a, n, b)

    a=9
    b=1
    function(a, n, b)

    pixels.write()
    time.sleep_ms(pixDELAY)