Case study

labelibre: direct SUPVAN T50M Pro printing over a reconstructed BLE protocol

labelibre implements direct Bluetooth printing to the SUPVAN T50M Pro using protocol knowledge from community analysis of the Katasymbol app. It parses Labelife AML labels into one-bit images, compresses print buffers with LZMA and sends data frames through a BLE transport from a macOS app or CLI.

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: 0
Last commit: 2026-11-03
Language: Python
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: 2026-11-09

How evidence classes are assigned

Requirements & limits

Prerequisites: macOS 12+, Python 3.13 and a SUPVAN T50M Pro printer with Bluetooth access.
Prerequisites: The printer must be on and disconnected from the phone app.
Limits: AML rendering supports Image elements; text and barcode elements are skipped.
License: MIT license.

Cite

BibTeX

@misc{labelibre-supvan-case,
  title = {{labelibre: direct SUPVAN T50M Pro printing over a reconstructed BLE protocol}},
  howpublished = {\url{https://github.com/louisalexander/labelibre}},
  url = {https://github.com/louisalexander/labelibre},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/labelibre-supvan-case/}}
}

Plain text

labelibre: direct SUPVAN T50M Pro printing over a reconstructed BLE protocol. https://github.com/louisalexander/labelibre (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/labelibre-supvan-case/

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Primary sources

README.md GitHub · louisalexander/labelibre · Revision ea908d4