31 lines
1.1 KiB
Python
Executable file
31 lines
1.1 KiB
Python
Executable file
""" Simple FancyLED example for Circuit Playground Express
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"""
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from adafruit_circuitplayground.express import cpx
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import adafruit_fancyled.adafruit_fancyled as fancy
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cpx.pixels.auto_write = False # Refresh pixels only when we say
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cpx.pixels.brightness = 1.0 # We'll use FancyLED's brightness controls
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# Declare a 4-element color palette, this one happens to be a
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# 'blackbody' palette -- good for heat maps and firey effects.
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palette = [
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fancy.CRGB(1.0, 1.0, 1.0), # White
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fancy.CRGB(1.0, 1.0, 0.0), # Yellow
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fancy.CRGB(1.0, 0.0, 0.0), # Red
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fancy.CRGB(0.0, 0.0, 0.0),
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] # Black
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offset = 0 # Positional offset into color palette to get it to 'spin'
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levels = (0.25, 0.3, 0.15) # Color balance / brightness for gamma function
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while True:
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for i in range(10):
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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 / 10)
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color = fancy.gamma_adjust(color, brightness=levels)
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cpx.pixels[i] = color.pack()
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cpx.pixels.show()
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offset += 0.033 # Bigger number = faster spin
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