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66 lines
2.0 KiB
66 lines
2.0 KiB
import urandom
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import neopixel
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class BlinkenRing:
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def __init__(self, pin, pixel_count, pixel_spacer):
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self.party_mode = False
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self.pixel_off = (0, 0, 0)
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self.offset = 0
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# Pin where the NeoPixel ring is located:
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self.pin = pin
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# Number of pixels on the ring:
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self.pixel_count = pixel_count
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# Space between pixels to light:
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self.pixel_spacer = pixel_spacer
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self.randomize_color()
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# https://github.com/adafruit/Adafruit_CircuitPython_NeoPixel
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self.pixels = neopixel.NeoPixel(pin, pixel_count, auto_write=False)
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self.pixels.brightness = 0.35
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def randomize_color(self):
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self.set_color((urandom.randrange(0, 127, 1),
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urandom.randrange(0, 127, 1),
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urandom.randrange(0, 127, 1)))
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def set_color(self, color):
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self.red = color[0]
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self.green = color[1]
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self.blue = color[2]
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def get_color(self):
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return (self.red, self.green, self.blue)
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def go_blank(self):
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self.pixels.fill((0, 0, 0))
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self.pixels.show()
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# Advance one frame of animation:
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def animate(self):
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if self.party_mode:
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self.randomize_color()
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# Kill previous trailing pixels:
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for target_pixel in range(self.offset - 1, self.pixel_count, self.pixel_spacer):
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self.pixels[target_pixel] = self.pixel_off
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# Light trailing pixels:
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for target_pixel in range(self.offset, self.pixel_count, self.pixel_spacer):
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self.pixels[target_pixel] = (int(self.red / 4), int(self.green / 4), int(self.blue / 4))
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# Increase pixel offset until it hits 6, then roll back to 0:
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self.offset += 1
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if self.offset == self.pixel_spacer:
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self.offset = 0;
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# Light new pixels:
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color = (self.red, self.green, self.blue)
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for target_pixel in range(self.offset, self.pixel_count, self.pixel_spacer):
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self.pixels[target_pixel] = color
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self.pixels.show()
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