import neopixel
import time
from machine import Pin

led_num = 16
led_num_half = int(led_num/2)
p = Pin(0, Pin.OUT)
n = neopixel.NeoPixel(p, led_num)

while True:
    for i in range(led_num):
        n[i] = (0,255,255,)
        n[i-led_num_half] = (0,255,0)
        # n[i] = (255,255,0)
        # n[i] = (0,0,0)
        n.write()
        time.sleep(0.05)