"""Rainbow pattern demo using led_patterns helpers."""

from machine import Pin
import neopixel
import time

from led_patterns import rainbow_frame


np = neopixel.NeoPixel(Pin(4), 256)

for frame in range(120):
    frame_colors = rainbow_frame(len(np), frame, step=5)
    for i, color in enumerate(frame_colors):
        np[i] = color
    np.write()
    time.sleep(0.05)

np.fill((0, 0, 0))
np.write()