42 lines
1.4 KiB
Python
42 lines
1.4 KiB
Python
# SPDX-FileCopyrightText: 2019 Erin St Blaine for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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""" Simple FancyLED example for NeoPixel strip
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"""
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import board
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import neopixel
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import adafruit_fancyled.adafruit_fancyled as fancy
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num_leds = 17
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# Declare a Water Colors palette
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palette = [fancy.CRGB(0, 214, 214), # blues and cyans
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fancy.CRGB(0, 92, 160),
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fancy.CRGB(0, 123, 255),
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fancy.CRGB(0, 68, 214)]
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# Declare a Fire Colors palette
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#palette = [fancy.CRGB(0, 0, 0), # Black
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# fancy.CHSV(1.0), # Red
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# fancy.CRGB(1.0, 1.0, 0.0), # Yellow
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# 0xFFFFFF] # White
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# Declare a NeoPixel object on pin D6 with num_leds pixels, no auto-write.
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# Set brightness to max because we'll be using FancyLED's brightness control.
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pixels = neopixel.NeoPixel(board.D1, num_leds, brightness=1.0,
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auto_write=False)
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offset = 0 # Positional offset into color palette to get it to 'spin'
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while True:
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for i in range(num_leds):
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# Load each pixel's color from the palette using an offset, run it
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# through the gamma function, pack RGB value and assign to pixel.
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color = fancy.palette_lookup(palette, offset + i / num_leds)
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color = fancy.gamma_adjust(color, brightness=0.25)
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pixels[i] = color.pack()
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pixels.show()
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offset += 0.02 # Bigger number = faster spin
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