36 lines
1.4 KiB
Python
36 lines
1.4 KiB
Python
from rpi_ws281x import PixelStrip, Color
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import time
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# LED strip configuration:
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LED_COUNT = 8 # Number of LED pixels.
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LED_PIN = 16 # GPIO pin connected to the pixels (18 uses PWM!).
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# LED_PIN = 10 # GPIO pin connected to the pixels (10 uses SPI /dev/spidev0.0).
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LED_FREQ_HZ = 800000 # LED signal frequency in hertz (usually 800khz)
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LED_DMA = 10 # DMA channel to use for generating signal (try 10)
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LED_BRIGHTNESS = 255 # Set to 0 for darkest and 255 for brightest
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LED_INVERT = False # True to invert the signal (when using NPN transistor level shift)
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LED_CHANNEL = 0 # set to '1' for GPIOs 13, 19, 41, 45 or 53
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# Create NeoPixel object with appropriate configuration.
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strip = PixelStrip(LED_COUNT, LED_PIN, LED_FREQ_HZ, LED_DMA, LED_INVERT, LED_BRIGHTNESS, LED_CHANNEL)
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# Intialize the library (must be called once before other functions).
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strip.begin()
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def color_chase(color, wait):
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"""颜色追逐效果"""
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for i in range(strip.numPixels()):
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strip.setPixelColor(i, color)
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strip.show()
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time.sleep(wait)
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try:
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while True:
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# 渐变色追逐效果
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for j in range(3):
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color_chase(Color(255, 0, 0), 0.1) # 红色
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color_chase(Color(0, 255, 0), 0.1) # 绿色
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color_chase(Color(0, 0, 255), 0.1) # 蓝色
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except KeyboardInterrupt:
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color_chase(Color(0, 0, 0), 0.1) # 关闭时变为黑色
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exit(0) |