Spin SemiconductorPedals & multi-FX
Pedals built around the Spin FV-1 DSP chip
This entry covers guitar pedals and DIY effect boards that use the Spin Semiconductor FV-1, a 28-pin digital signal processor chip for audio effects such as reverb, delay and modulation. The chip has a stereo ADC and DAC, three potentiometer inputs, eight built-in programs and room for eight more in an external EEPROM. Many commercial and hobbyist pedals use the FV-1, and the entries here are tools and program collections for it.
The FV-1 runs programs stored in an external EEPROM, so custom programs are burned to or loaded into that memory rather than flashed as a firmware image. The entries here are tools and program collections rather than a replacement OS.
Open-source Java visual patch builder with an audio simulator for the Spin FV-1 DSP chip. Requires Java 8 or later; runs on Windows, macOS and Linux.
by Gary Worsham (HolyCityAudio)
Community directory of FV-1 programs for DIY guitar pedals, published as a searchable website built from a programs list in the repository. Listed as a tool because it catalogues programs rather than shipping firmware.
| Version | Date | Notes |
|---|---|---|
| main @ 6feb327 | 2025-06-03 | No tagged releases; this is the latest commit. |