【Micropython】RP2040驱动WS2812灯带不同效果

【Micropython】RP2040驱动WS2812灯带不同效果

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• 相关篇《【MicroPython】RP2040 MicroPython固件烧录以及Thonny 开发初探》
• 驱动库：https://github.com/JanBednarik/micropython-ws2812

• 该库仅支持RP2040.

✨该库提供了5种不同效果的驱动示例。灯珠数量可以根据实际数量自定义，如果灯带足够长的话，效果还是比较很炫的。

• 使用例程前，需要导入neopixel.py库文件。

驱动效果示例一

• 七彩流光效果

# Example showing how functions, that accept tuples of rgb values,
# simplify working with gradients

import time
from neopixel import Neopixel

numpix = 8
strip = Neopixel(numpix, 1, 1, "GRB")# 灯珠数量 PIO状态机ID 连接的引脚 颜色值的位模式和顺序
# strip = Neopixel(numpix, 0, 0, "GRBW")

red = (255, 0, 0)
orange = (255, 50, 0)
yellow = (255, 100, 0)
green = (0, 255, 0)
blue = (0, 0, 255)
indigo = (100, 0, 90)
violet = (200, 0, 100)
colors_rgb = [red, orange, yellow, green, blue, indigo, violet]

# same colors as normaln rgb, just 0 added at the end
colors_rgbw = [color+tuple([0]) for color in colors_rgb]
colors_rgbw.append((0, 0, 0, 255))

# uncomment colors_rgbw if you have RGBW strip
colors = colors_rgb
# colors = colors_rgbw


step = round(numpix / len(colors))
current_pixel = 0
strip.brightness(50)

for color1, color2 in zip(colors, colors[1:]):
    strip.set_pixel_line_gradient(current_pixel, current_pixel + step, color1, color2)
    current_pixel += step

strip.set_pixel_line_gradient(current_pixel, numpix - 1, violet, red)

while True:
    strip.rotate_right(1)
    time.sleep(0.042)
    strip.show()

驱动效果示例二

• ✨七彩快闪效果

import time
from neopixel import Neopixel

numpix = 8
strip = Neopixel(numpix, 1, 1, "RGBW")

red = (255, 0, 0)
orange = (255, 165, 0)
yellow = (255, 150, 0)
green = (0, 255, 0)
blue = (0, 0, 255)
indigo = (75, 0, 130)
violet = (138, 43, 226)
colors_rgb = (red, orange, yellow, green, blue, indigo, violet)

# same colors as normaln rgb, just 0 added at the end
colors_rgbw = [color+tuple([0]) for color in colors_rgb]
colors_rgbw.append((0, 0, 0, 255))

# uncomment colors_rgb if you have RGB strip
# colors = colors_rgb
colors = colors_rgbw

strip.brightness(42)

while True:
    for color in colors:
        for i in range(numpix):
            strip.set_pixel(i, color)
            time.sleep(0.01)
            strip.show()