Case study

B3603: reconstructing control-board behavior for replacement firmware

B3603 investigates the buck converter's control board to support replacement STM8 firmware. The project maps MCU pins, display drivers and voltage and current control signals, includes board schematics, and provides firmware that the author reports is operational and serially controllable.

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

Stars: 67
Last commit: 2017-08-02
Language: C
License (GitHub): GPL-3.0

GitHub data as of 2026-11-09

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Requirements & limits

Prerequisites: A B3603 unit, CP2102 USB-to-TTL adapter and STLink V2 programmer are listed as required components.
Testing evidence: The author reports the replacement firmware is functioning and serially controllable.
License: GPL-3.0 license.

Cite

BibTeX

@misc{b3603-case,
  title = {{B3603: reconstructing control-board behavior for replacement firmware}},
  howpublished = {\url{https://github.com/baruch/b3603}},
  url = {https://github.com/baruch/b3603},
  urldate = {2026-11-08},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/b3603-case/}}
}

Plain text

B3603: reconstructing control-board behavior for replacement firmware. https://github.com/baruch/b3603 (accessed 2026-11-08). Awesome REA entry: https://awesomerea.org/resources/b3603-case/

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About this entry

The description was reviewed against primary sources.

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Primary sources

README.md GitHub · baruch/b3603 · Revision 1244057
stm8/PROTOCOL.md GitHub · baruch/b3603 · Revision 1244057