led.py

#-*- coding: UTF-8 -*-   
import time
import board
import neopixel

pixel_pin = board.D18 #�������
num_pixels = 1 #����LED����
ORDER = neopixel.GRB

pixels = neopixel.NeoPixel(pixel_pin, num_pixels, brightness=1, auto_write=False,
pixel_order=ORDER)

def wheel(pos):
# Input a value 0 to 255 to get a color value.
# The colours are a transition r - g - b - back to r.
    if pos < 0 or pos > 255:
        r = g = b = 0
    elif pos < 85:
         r = int(pos * 3)
         g = int(255 - pos3)
         b = 0
    elif pos < 170:
         pos -= 85
         r = int(255 - pos*3)
         g = 0
         b = int(pos*3)
    else:
         pos -= 170
         r = 0
         g = int(pos*3)
         b = int(255 - pos*3)
    return (r, g, b) if ORDER == neopixel.RGB or ORDER == neopixel.GRB else (r, g, b, 0)

def rainbow_cycle(wait):
    for j in range(255):
        for i in range(num_pixels):
            pixel_index = (i * 256 // num_pixels) + j
            pixels[i] = wheel(pixel_index & 255)
            pixels.show()
            time.sleep(wait)

while True:

    pixels.fill((255, 0, 0))
    pixels.show()
    time.sleep(1)
    pixels.fill((0, 255, 0))
    pixels.show()
    time.sleep(1)
    pixels.fill((0, 0, 255))
    pixels.show()
    time.sleep(1)
    pixels.fill((255, 255, 255))
    pixels.show()
    time.sleep(1)
    #rainbow_cycle(0.001)