IdeaWell

Project ideas from Hacker News discussions.

CHOMPI portable sampler instrument is now open-source (hardware and software)

Original Article

Hacker News Discussion

📝 Discussion Summary (Click to expand)

1. Strong enthusiasm for owning/trying the Chompi sampler
- “I've had my eye on one of these little musical wonder boxes for a long time! … I'm still hoping to try one soon. Maybe this is my time!” – ElijahLynn
- “I liked this instrument but could never get one.” – onemoresoop

2. Open‑source release spurs DIY/build‑it‑yourself options, but trademark rules limit branding
- “Open source but production of the hardware was discontinued so you would either need to buy used or build one from the specs.” – blltprfmnk
- “Now that it's OSS, I'm sure plenty of people will build and sell it. Hell, you might be able to just get it off Ali, as well.” – stavros
- “The main thing would be how you market it since one of the provisions is that you can’t use that trademarked name… ” – blltprfmnk

3. Challenges of obtaining a legitimate unit: scarce used market, pricing concerns, and scams
- “I was bombarded by scam accounts on Facebook (no longer a user) pretending to be Chompy.” – onemoresoop
- “They're going about retail second‑hand on Reverb, with thin supply.” – adw
- “Thanks. What's a good price for these used?” – onemoresoop

🚀 Project Ideas

Chompi Build Kit Service

Summary

  • Provide a verified bill-of-materials, PCB, and optional component kit for DIY assembly of the Chompi sampler, eliminating sourcing guesswork and scam risk.
  • Core value: Enables musicians to obtain a legitimate, open-source Chompi-compatible hardware at a predictable cost with community-supported build guides.

Details

Key Value
Target Audience DIY synth hobbyists, electronic musicians seeking affordable Chompi hardware
Core Feature One-click kit purchase (PCB + sourced components) with step‑by‑step assembly guide and firmware flashing instructions
Tech Stack KiCad for PCB design, Shopify/WooCommerce storefront, GitHub for documentation, optional PCB fab API
Difficulty Medium
Monetization Revenue-ready: Kit sales with markup (e.g., $150 per kit)

Notes

  • HN users expressed frustration over scams and thin supply; a trusted kit source would be welcomed (see onemoresoop's scam comment).
  • Potential for community contributions to improve BOM, firmware, and spawn discussion on open-source hardware cloning.

Chompi Software Emulator (VST/AU)

Summary

  • A cross-platform VST/AU plugin that faithfully emulates the Chompi sampler's sound engine, workflow, and UI, letting users access its unique character without hardware.
  • Core value: Low-cost, instantly accessible alternative for producers hindered by discontinued hardware and high second‑hand prices.

Details

Key Value
Target Audience Music producers, beat makers, and synth enthusiasts using DAWs
Core Feature Accurate emulation of Chompi's sampling, pitch-shifting, lo-fi filters, and preset management within a plugin interface
Tech Stack JUCE framework (C++), Rust audio DSP optional, VST3/AU formats, cross-platform build (Windows/macOS/Linux)
Difficulty High
Monetization Revenue-ready: One‑time license fee ($49) or freemium with paid preset packs

Notes

  • Commenters lamented the inability to find a unit and the risk of scams; a software version removes both barriers (see onemoresoop's wish to try one).
  • Could spark discussion on open‑source audio emulation and serve as a teaching tool for DSP techniques.

Chompi Trusted Marketplace

Summary

  • A moderated escrow‑protected marketplace for buying and selling used Chompi samplers, with seller verification and authenticity checks to combat fraud.
  • Core value: Provides a safe, transparent venue for the community to trade hardware, reducing scam risk and price uncertainty.

Details

Key Value
Target Audience Owners and seekers of used Chompi hardware looking for secure transactions
Core Feature Escrow payments via Stripe Connect, seller reputation system, optional third‑party inspection service, and integrated shipping labels
Tech Stack React frontend, Node.js/NestJS backend, PostgreSQL, Stripe Connect for escrow, AWS hosting
Difficulty Medium
Monetization Revenue-ready: Transaction fee (5% of sale) paid by seller

Notes

  • HN users reported scam accounts on Facebook and difficulty verifying legitimacy (onemoresoop's scam comment); a trusted platform directly addresses this pain point.
  • Could foster community discussion on fair pricing, hardware maintenance, and inspire similar marketplaces for other discontinued open‑source gear.

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