Case study

open-cardi: reconstructing Cardi lighting control over BLE

open-cardi reconstructs BLE control of Cardi K3 and K4 Active Ultra lighting kits in Android and web clients. The author derived GATT services, packet framing, and command behavior from decompiled vendor apps and HCI snoop replay, including color, zone, pattern, and reset operations.

Targets: App · Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06
Evidence class: C1 partial scope or analysis entry

Stars: 1
Last commit: 2026-10-19
Language: Kotlin
License (GitHub): MIT

GitHub data as of 2026-11-10

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Evidence

Demo screenshot from the project's public documentation

Observed: Download and demo observed; the case covers part of the target software.
Scope: Partial
Checked: 2026-11-08

How evidence classes are assigned

Requirements & limits

Scope: Cardi K3 or K4 Active Ultra, or another named ConSmart-family kit, is the documented hardware scope.
Limits: The web client can leave a resetting kit blinking until power cycling and vendor-app color setting; the Android client uses the default 23-byte MTU.
Limits: Lock and unlock effects on neighboring controllers remain inferred.
License: MIT license.

Cite

BibTeX

@misc{open-cardi-case,
  title = {{open-cardi: reconstructing Cardi lighting control over BLE}},
  howpublished = {\url{https://github.com/harshmandan/open-cardi}},
  url = {https://github.com/harshmandan/open-cardi},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/open-cardi-case/}}
}

Plain text

open-cardi: reconstructing Cardi lighting control over BLE. https://github.com/harshmandan/open-cardi (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/open-cardi-case/

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About this entry

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Primary sources

README.md GitHub · harshmandan/open-cardi · Revision d8eaf5b
debug/README.md GitHub · harshmandan/open-cardi · Revision d8eaf5b