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Colorduino plasma demo, matrix test and browser simulator

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- ColorduinoPlasma sketch and Colorduino library v1.2.6 (lincomatic @ fff7bd3)
- ColorduinoMatrixTest hardware test sketch
- web/index.html: bit-accurate port of the plasma with large resolutions
- prebuilt 16 MHz firmware (with and without Optiboot)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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mangavalkandClaude Opus 5.5 committed 2026-11-07 22:28:12 +01:00
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libraries/Colorduino/README
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Arduino Interface Library for ITeadStudio Colorduino and Colors Shield
Copyright (c) 2011-2016 Sam C. Lin <lincomatic@hotmail.com>
To install, copy libraries/Colorduino to your <arduino sketchbook folder>/libraries/Colorduino folder.
ColorduinoPlasma.pde is a sample program which uses the library. It displays an animated plasma on an 8x8 LED matrix
NOTE: Later versions of Arduino make the library run slowly. It's easy to see because ColorduinoPlasma runs slowly in a step-like version. I'm not sure which version triggers the slowdown, but my testing with Arduino 1.6.3 -> 1.8.1 all exhibit the slowdown. Arduino 1.0.2 runs full speed
Modified: Removed the inefficient digitalPinToBitMask() and digitalPinToPort(), which was causing the sketch to run very slow if compiled by later versions of Arduino.