Jeff Epler
267aca57e0
This shows a phase shifted chase animation on each strip, each in a different color.
65 lines
1.7 KiB
Python
65 lines
1.7 KiB
Python
# SPDX-FileCopyrightText: 2022 Jeff Epler
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#
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# SPDX-License-Identifier: Unlicense
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import board
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import rainbowio
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import adafruit_ticks
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from adafruit_led_animation.animation.comet import Comet
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from adafruit_led_animation.group import AnimationGroup
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from adafruit_led_animation.helper import PixelMap
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from adafruit_neopxl8 import NeoPxl8
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# Customize for your strands here
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num_strands = 8
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strand_length = 30
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first_led_pin = board.NEOPIXEL0
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num_pixels = num_strands * strand_length
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# Make the object to control the pixels
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pixels = NeoPxl8(
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first_led_pin,
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num_pixels,
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num_strands=num_strands,
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auto_write=False,
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brightness=0.50,
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)
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def strand(n):
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return PixelMap(
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pixels,
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range(n * strand_length, (n + 1) * strand_length),
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individual_pixels=True,
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)
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# Create the 8 virtual strands
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strands = [strand(i) for i in range(num_strands)]
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# For each strand, create a comet animation of a different color
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animations = [
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Comet(strand, 0.02, rainbowio.colorwheel(3 * 32 * i), ring=True)
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for i, strand in enumerate(strands)
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]
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# Advance the animations by varying amounts so that they become staggered
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for i, animation in enumerate(animations):
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animation._tail_start = 30 * 5 * i // 8 # pylint: disable=protected-access
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# Group them so we can run them all at once
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animations = AnimationGroup(*animations)
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# Run the animations and report on the speed in frame per secodn
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t0 = adafruit_ticks.ticks_ms()
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frame_count = 0
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while True:
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animations.animate()
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frame_count += 1
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t1 = adafruit_ticks.ticks_ms()
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dt = adafruit_ticks.ticks_diff(t1, t0)
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if dt > 1000:
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print(f"{frame_count * 1000/dt:.1f}fps")
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t0 = t1
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frame_count = 0
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