Case study

orba-protocol: reconstructing Artiphon Orba 2 control messages

orba-protocol reconstructs the Artiphon Orba 2 control protocol across USB-MIDI and BLE-MIDI. Its specification maps SysEx framing, codec, CRC and device registers, while Python and JavaScript libraries decode messages and build commands for device settings. The author reports comparing the implementation with captured traffic and live responses.

Targets: Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06
Evidence class: C2 code & docs, no demo or download

Stars: 19
Last commit: 2026-07-15
Language: JavaScript

GitHub data as of 2026-11-10

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Evidence

Observed: Code and documentation observed; no download method or demo found.
Checked: 2026-11-09

How evidence classes are assigned

Requirements & limits

Prerequisites: An Artiphon Orba 2 is required for live device control.
Prerequisites: The Python reference requires Python 3.8 or later; the JavaScript module runs in a browser or Node.
Limits: Some specification items marked snoop still require an in-app capture to determine exact enum bytes.
License: Code is MIT licensed; the specification is additionally CC BY 4.0 licensed.

Cite

BibTeX

@misc{orba-protocol-artiphon-orba-2-case,
  title = {{orba-protocol: reconstructing Artiphon Orba 2 control messages}},
  howpublished = {\url{https://github.com/holofermes/orba-protocol}},
  url = {https://github.com/holofermes/orba-protocol},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/orba-protocol-artiphon-orba-2-case/}}
}

Plain text

orba-protocol: reconstructing Artiphon Orba 2 control messages. https://github.com/holofermes/orba-protocol (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/orba-protocol-artiphon-orba-2-case/

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About this entry

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Primary sources

spec/SPEC.md GitHub · holofermes/orba-protocol · Revision 055610b
README.md GitHub · holofermes/orba-protocol · Revision 055610b