kopia lustrzana https://github.com/pimoroni/pimoroni-pico
40 wiersze
1.1 KiB
Python
40 wiersze
1.1 KiB
Python
import plasma
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from plasma import plasma_stick
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from math import sin
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"""
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Simple pulsing effect generated using a sine wave.
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"""
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# Set how many LEDs you have
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NUM_LEDS = 50
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# we're using HSV colours in this example - find more at https://colorpicker.me/
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# to convert a hue that's in degrees, divide it by 360
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COLOUR = 0.5
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# set up the WS2812 / NeoPixel™ LEDs
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led_strip = plasma.WS2812(NUM_LEDS, 0, 0, plasma_stick.DAT, color_order=plasma.COLOR_ORDER_RGB)
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# start updating the LED strip
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led_strip.start()
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offset = 0
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while True:
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# use a sine wave to set the brightness
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for i in range(NUM_LEDS):
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led_strip.set_hsv(i, COLOUR, 1.0, sin(offset))
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offset += 0.002
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# # our sine wave goes between -1.0 and 1.0 - this means the LEDs will be off half the time
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# # this formula forces the brightness to be between 0.0 and 1.0
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# for i in range(NUM_LEDS):
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# led_strip.set_hsv(i, COLOUR, 1.0, (1 + sin(offset)) / 2)
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# offset += 0.002
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# # adjust the saturation instead of the brightness/value
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# for i in range(NUM_LEDS):
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# led_strip.set_hsv(i, COLOUR, (1 + sin(offset)) / 2, 0.8)
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# offset += 0.002
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