A collection of modules for VCV Rack by duddex.
Note: These modules were created as an experiment in how GitHub Copilot and LLMs can assist in software development. The entire workflow — from setting up the build environment (downloading and configuring MSYS2/MinGW and the Rack SDK), to writing module code, designing panel layouts, and authoring this very README — was done with significant LLM support using GitHub Copilot with Claude Opus 4.6.
A polyphonic oscillator based on Tropical Additive Synthesis, combining five cosine oscillators using the minimum operator (tropical addition in min-plus algebra) instead of summation. This produces complex, angular waveforms rich in harmonics, with controls for per-oscillator frequency multipliers, detuning, and amplitude offsets (tropical VCAs), plus polyphonic V/OCT input and a DC offset knob.
For full documentation, see TropicalOscillator.md.
A simple utility module with a blinking LED. A knob controls the blink frequency from 0.1 Hz to 5 Hz (default 1 Hz), and a button cycles the LED color through red, yellow, and green. Useful for visual tempo reference or just for fun.
| Control | Type | Range | Default | Description |
|---|---|---|---|---|
| FREQ | Knob | 0.1 – 5 Hz | 1 Hz | Blink frequency |
| COLOR | Button | — | Red | Cycles LED color: red → yellow → green |
An extended visual utility module that demonstrates illuminated Rack UI components. It blinks a light bezel and a light slider in sync. The slider controls blink frequency, and a color knob sweeps through a continuous RGB palette.
| Control | Type | Range | Default | Description |
|---|---|---|---|---|
| COLOR | Knob | 0 – 255 | 36.5 | Continuous RGB color control (left = black, right = white). Default maps to red. |
| BEZEL | Light Bezel | — | — | Illuminated bezel element, blinking with the selected color. |
| FREQ | Light Slider | 0.1 – 5 Hz | 2.55 Hz | Blink frequency control for both illuminated elements. |
Color transitions follow this path:
black → red → yellow → green → cyan → blue → magenta → white