Jimmy
98fa4260d4
Mirror bundled-lib/ by keeping manifest.json at the bundle root and shipping sample .py files from a demo/ subdirectory. Co-authored-by: Cursor <cursoragent@cursor.com>
55 lines
1.1 KiB
Python
55 lines
1.1 KiB
Python
"""Twinkle NeoPixel demo — self-contained (stdlib + simulated hardware only)."""
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import random
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import time
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from machine import Pin
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import neopixel
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# --- helpers
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def _clamp(channel: int) -> int:
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return max(0, min(255, int(channel)))
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def twinkle_frame(
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led_count: int,
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frame: int,
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base=(0, 0, 8),
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sparkle=(255, 255, 180),
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sparkles: int = 3,
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seed: int = 1337,
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):
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if led_count <= 0:
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return []
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out = [tuple(_clamp(v) for v in base) for _ in range(led_count)]
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rng = random.Random(seed + frame)
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for _ in range(min(max(0, sparkles), led_count)):
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idx = rng.randrange(led_count)
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out[idx] = tuple(_clamp(v) for v in sparkle)
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return out
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# --- demo
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NUM_LEDS = 16
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np = neopixel.NeoPixel(Pin(4), NUM_LEDS)
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for frame in range(120):
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frame_colors = twinkle_frame(
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len(np),
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frame,
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base=(0, 0, 6),
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sparkle=(255, 210, 130),
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sparkles=3,
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)
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for i, color in enumerate(frame_colors):
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np[i] = color
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np.write()
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time.sleep(0.08)
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np.fill((0, 0, 0))
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np.write()
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