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CHOMPI-Club

CHOMPI-Club/CHOMPI

All of the production files, hardware and firmware, that make up the CHOMPI Sampler.

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Created Sep 29, 2026Updated Sep 29, 2026

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README

CHOMPI — Open Source

CHOMPI is a quirky chromatic sampler and tape-music instrument by CHOMPI Club.

This repo contains all of the production files, both hardware and firmware, that make up the CHOMPI Sampler.

What's here
Firmware — Start Here Quick instructions for setting up your development environment, building the firmware, and loading it onto your CHOMPI.
firmware/chompi-wave WAVE 1.0, a wavetable synth firmware that doubles as a starting point for anyone writing their own firmware.
firmware/chompi-tempo TEMPO 1.0, a pattern generator firmware — the counterpart to TAPE.
firmware/chompi-tape TAPE 2.0, the sampler firmware every CHOMPI ships with.
firmware/chompi-bootloader-v6.4-beta This bootloader never shipped on units, but was created to improve stability of the Daisy Seed's integration with CHOMPI's hardware as well as repair edge-case issues related to bugs inherited from older versions of the Electrosmith bootloader.
firmware/card-profiles The factory microSD card contents for TAPE, TEMPO and WAVE — firmware, samples and settings.
hardware/hardware-pcb Schematic, BOM, EAGLE PCB files, and the full fabrication package.
hardware/hardware-enclosure The six pcb panel enclosure files, as well as laser cutting files for diy panels.

Each folder contains its own README, so check those out for more details.

What's not here

The panel artwork. The graphic set and CHOMPI logos have all been removed for copyright purposes. If you choose to create your own hardware, we ask that you name it something else to avoid trademark infringement.

Support Guidelines

This is a discontinuation open-source release. As such, this repo is intended to be a permanent source for files and documentation, and will likely not be receiving updates in the future. If you wish to customize your own project, we recommend cloning this repo into your own GitHub.

Community

Even though this version of CHOMPI is now discontinued, the CLUB is expanding. If you want to discuss this project, share your creations, see what other users have made on their CHOMPI, feel free to check out the CHOMPI Open Source channel on the Chase Bliss Discord.

License

Everything here is MIT — see LICENSE. THIRD_PARTY.md lists the work this builds on and the notices that come with it. The CHOMPI name, logo and artwork are not covered by the license — see TRADEMARKS.md.

HAPPY CHOMPIN'