Case study

Ember Mug: decoding the on-device drink-log stream

The Ember Mug app decodes the undocumented fc540013 Bluetooth LE statistics stream from an Ember Mug 2 into a drink log. Its format notes describe notification fragments, record fields, timestamps, and the device's backlog behavior; the macOS menu-bar app combines decoded records with its own live readings.

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: 9
Last commit: 2026-09-15
Language: Python
License (GitHub): MIT

GitHub data as of 2026-11-10

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Evidence

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

How evidence classes are assigned

Requirements & limits

Prerequisites: An Ember mug previously set up through the Ember phone app, macOS 12+, and Python 3.11+.
Limits: The statistics-stream findings come from one Ember Mug 2 with firmware 406; some fields remain hypotheses.
License: MIT license.

Cite

BibTeX

@misc{ember-mug-drink-log-case,
  title = {{Ember Mug: decoding the on-device drink-log stream}},
  howpublished = {\url{https://github.com/gwhillhouse/ember-mug-app}},
  url = {https://github.com/gwhillhouse/ember-mug-app},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/ember-mug-drink-log-case/}}
}

Plain text

Ember Mug: decoding the on-device drink-log stream. https://github.com/gwhillhouse/ember-mug-app (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/ember-mug-drink-log-case/

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About this entry

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Primary sources

docs/statistics-stream.md GitHub · gwhillhouse/ember-mug-app · Revision 9700820
README.md GitHub · gwhillhouse/ember-mug-app · Revision 9700820