Case study

Bose-Reverse-Engineering: investigating the 321GS Series III SmartSpeaker link

Bose-Reverse-Engineering investigates the SmartSpeaker link between a Bose 321GS Series III console and bass module. The author documents connector pinouts, probes a 4800-baud half-duplex UART exchange, and provides Arduino firmware and KiCad hardware for a replacement console.

Targets: Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-08

Stars: 6
Last commit: 2022-07-25
Language: C++
License (GitHub): GPL-3.0

GitHub data as of 2026-11-09

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Requirements & limits

Prerequisites: Bose 321GS Series III hardware is the investigated system.
Limits: The investigation stopped after a functioning audio system was restored; some protocol questions remain unanswered.
License: GPL-3.0.

Cite

BibTeX

@misc{bose-321gs-smartspeaker-case,
  title = {{Bose-Reverse-Engineering: investigating the 321GS Series III SmartSpeaker link}},
  howpublished = {\url{https://github.com/Kenneract/Bose-Reverse-Engineering}},
  url = {https://github.com/Kenneract/Bose-Reverse-Engineering},
  urldate = {2026-11-08},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/bose-321gs-smartspeaker-case/}}
}

Plain text

Bose-Reverse-Engineering: investigating the 321GS Series III SmartSpeaker link. https://github.com/Kenneract/Bose-Reverse-Engineering (accessed 2026-11-08). Awesome REA entry: https://awesomerea.org/resources/bose-321gs-smartspeaker-case/

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About this entry

The description was reviewed against primary sources.

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Primary sources

SmartSpeakerProtocol.md GitHub · Kenneract/Bose-Reverse-Engineering · Revision 76774cc
README.md GitHub · Kenneract/Bose-Reverse-Engineering · Revision 76774cc
ReplacementUnit/README.md GitHub · Kenneract/Bose-Reverse-Engineering · Revision 76774cc