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Project ideas from Hacker News discussions.

What I learned selling 2,500 MIDI recorders: Hardware is not so hard

Original Article

Hacker News Discussion

📝 Discussion Summary (Click to expand)

1. Massive Codebase & Reliance on Existing Frameworks

"There’s a lot required to make a full‑featured product." — chipweinberger

The project uses ~85 K lines of application code and ~110 K lines of firmware code, and the developer notes that these figures *do not include ESP‑IDF* and involve extensive connectivity, MIDI, OTA, and security modules.

2. Anti‑Counterfeit & Secure Provisioning

"I'm using an STSAFE chip... Random 128‑bit per‑device IDs / product‑keys." — chipweinberger

Security is achieved with dedicated secure elements, random device‑specific IDs, and pre‑programmed keys, mirroring approaches used in high‑value products like StarLink terminals.

3. Practical Manufacturing & Compliance Realities

"I chose to do FCC only and CE self‑certify... $5K should be plenty." — chipweinberger

The team opted for limited certification (FCC + CE self‑certification) and emphasizes that early testing costs are modest ($5 K) if the design is done correctly, while also navigating scale‑related shipping logistics.

🚀 Project Ideas

Generating project ideas…

QuickFlash Cloud

Summary

  • [Cloud IDE and emulator for ESP32 firmware that removes the 2‑minute compile‑flash delay]
  • [Core value proposition: Accelerates development 5×, enabling rapid iteration for makers]

Details

Key Value
Target Audience Embedded hobbyists and music‑tech developers building MIDI devices
Core Feature Real‑time firmware sandbox with hot‑reload preview and one‑click OTA flashing
Tech Stack WebAssembly front‑end, Node.js/Express backend, Docker containers wrapping ESP‑IDF
Difficulty Medium
Monetization Revenue-ready: $9/mo subscription

Notes

  • [Directly solves chipweinberger’s complaint about long compile‑flash loops]
  • [Would be a time‑saving tool for teachers and prototypers alike]

MIDI-Toolkit Open Framework

Summary

  • [Modular, open‑source firmware skeleton for ESP32‑based MIDI hardware that trims the codebase to <10K lines]
  • [Core value proposition: Provides reusable libraries for connectivity, OTA, and anti‑counterfeit]

Details

Key Value
Target Audience Hobbyist musicians, educators, open‑source hardware communities
Core Feature Plug‑and‑play components for MIDI I/O, USB/BT/Wi‑Fi, OTA updates, secure IDs
Tech Stack C (ESP‑IDF), optional Zephyr RTOS, Python tooling scripts
Difficulty Low
Monetization Hobby

Notes

  • [Answers swizcakes’ question about open‑source versions and anti‑counterfeit strategies]
  • [Gives users like fw a concrete starting point without building from scratch]

CertifyIoT Compliance Hub

Summary

  • [Online platform that bundles FCC/CE certification checklists, pre‑certified radio modules, and testing coordination]
  • [Core value proposition: Reduces certification cost and effort from $5K+ to under $1K for small batches]

Details

Key Value
Target Audience Start‑ups and makers publishing hardware on Hacker News
Core Feature Automated test‑plan generator, marketplace for certified radios, documentation templates
Tech Stack React front‑end, Python back‑end, APIs to UL and accredited labs
Difficulty Medium
Monetization Revenue-ready: $200 per device batch certification package

Notes

  • [Solves bgnn’s and chipweinberger’s frustration with costly compliance paperwork]
  • [Potential to spark discussion and provide practical utility for the community]

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