import time
time.sleep(0.1) # Wait for USB to become ready

from machine import Pin
from neopixel import NeoPixel
pin = Pin(22, Pin.OUT)   # set GPIO0 to output to drive NeoPixels
np = NeoPixel(pin, 8)   # create NeoPixel driver on GPIO0 for 8 pixels
np[0] = (255, 255, 255) # set the first pixel to white
np.write()              # write data to all pixels

pattern=((1,1,0,0,0,0,0,0),(0,0,1,1,0,0,0,0),
         (0,0,0,0,1,1,0,0),(0,0,0,0,0,0,1,1))

while 1:
    for i in range(4):
        for j in range(4):
            for k in range(8):
                if pattern[j][k]==1:
                    np[k] = (0, 255, 255)     
                else:
                    np[k] = (0, 255, 0)   
            np.write()
            time.sleep(0.5)