Case study

haylou-rt-tools: reconstructing Haylou RT BLE and watch-face formats

haylou-rt-tools reconstructs selected Haylou RT LS05S watch interactions and the .tbwf watch-face format from device observation and study of the Hello Haylou app. Its Python tools query firmware and battery status, pair with the watch, show a text alert during pairing, build and check faces, and preview main text elements. The protocol notes specify BLE services, frame checksums, and command IDs.

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: 2026-11-05
Language: Python
License (GitHub): MIT

GitHub data as of 2026-11-10

Copy as Markdown View JSON Cite

Evidence

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

How evidence classes are assigned

Requirements & limits

Prerequisites: Python 3.10 or newer and a Haylou RT LS05S watch for device operations.
Testing evidence: Documented device tests use firmware V21.01.004.2.1.1.3.51 and Hello Haylou 3.7.19; other versions are untested.
Limits: Generated faces and previews have not been confirmed against a real watch screen; direct upload and firmware update code are absent.
License: MIT License.

Cite

BibTeX

@misc{haylou-rt-tools-case,
  title = {{haylou-rt-tools: reconstructing Haylou RT BLE and watch-face formats}},
  howpublished = {\url{https://github.com/jvitorcosta/haylou-rt-tools}},
  url = {https://github.com/jvitorcosta/haylou-rt-tools},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/haylou-rt-tools-case/}}
}

Plain text

haylou-rt-tools: reconstructing Haylou RT BLE and watch-face formats. https://github.com/jvitorcosta/haylou-rt-tools (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/haylou-rt-tools-case/

Useful? Star Awesome REA on GitHub2.4k

About this entry

The description was reviewed against primary sources.

Report an outdated entry Suggest a translation fix

Primary sources

README.md GitHub · jvitorcosta/haylou-rt-tools · Revision cfb4c22
docs/protocol.md GitHub · jvitorcosta/haylou-rt-tools · Revision cfb4c22
docs/reverse-engineering.md GitHub · jvitorcosta/haylou-rt-tools · Revision cfb4c22