Case study

OsmoFresh Quella Pro: hardware and UART protocol investigation

An OsmoFresh Quella Pro investigation records reconstructed PCB schematics, identified components and a UART communication model for the water dispenser. The protocol notes distinguish main-to-display responses from display-to-main AA frames and give a SUM16 calculation, while leaving several payload meanings unresolved.

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: 1
Last commit: 2026-09-01
License (GitHub): MIT

GitHub data as of 2026-11-10

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Evidence

Observed: Code and documentation observed; no download method or demo found.
Checked: 2026-11-08

How evidence classes are assigned

Requirements & limits

Limits: The published schematics may contain errors or incomplete sections.
Limits: UART payload state discrimination and several field meanings remain unknown.
License: MIT license.

Cite

BibTeX

@misc{osmofresh-quella-pro-hardware-case,
  title = {{OsmoFresh Quella Pro: hardware and UART protocol investigation}},
  howpublished = {\url{https://github.com/LostCacher/osmofresh-quellapro-reverse-engineering}},
  url = {https://github.com/LostCacher/osmofresh-quellapro-reverse-engineering},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/osmofresh-quella-pro-hardware-case/}}
}

Plain text

OsmoFresh Quella Pro: hardware and UART protocol investigation. https://github.com/LostCacher/osmofresh-quellapro-reverse-engineering (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/osmofresh-quella-pro-hardware-case/

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About this entry

The description was reviewed against primary sources.

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Primary sources

Documentation/UART_Protocol_Model.md GitHub · LostCacher/osmofresh-quellapro-reverse-engineering · Revision 6a51b2b
README.md GitHub · LostCacher/osmofresh-quellapro-reverse-engineering · Revision 6a51b2b
Documentation/Componens.md GitHub · LostCacher/osmofresh-quellapro-reverse-engineering · Revision 6a51b2b