Case study

PetKit Eversweet Max 2 UVC: reconstructing fountain BLE telemetry

PetKit Eversweet Max 2 UVC BLE Gateway uses a local Python or ESP32-C3 client in place of the Wi-Fi PetKit device that relays the fountain’s data. It reads state and drinking history and sends Telegram alerts. Its protocol notes document BLE framing, authentication, a 42-byte state map and history flow control derived from device observations.

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: 2026-08-30
Language: C
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

Prerequisites: PetKit Eversweet Max 2 UVC CTW3UV and its six-byte authentication secret.
Prerequisites: An Android phone with the PetKit app and adb to obtain the secret by the documented method.
Limits: Only one fountain of the named model was tested.
License: MIT license.

Cite

BibTeX

@misc{petkit-eversweet-ble-gateway-case,
  title = {{PetKit Eversweet Max 2 UVC: reconstructing fountain BLE telemetry}},
  howpublished = {\url{https://github.com/sakirsek/petkit-eversweet-ble-gateway}},
  url = {https://github.com/sakirsek/petkit-eversweet-ble-gateway},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/petkit-eversweet-ble-gateway-case/}}
}

Plain text

PetKit Eversweet Max 2 UVC: reconstructing fountain BLE telemetry. https://github.com/sakirsek/petkit-eversweet-ble-gateway (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/petkit-eversweet-ble-gateway-case/

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About this entry

The description was reviewed against primary sources.

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Primary sources

docs/protocol.md GitHub · sakirsek/petkit-eversweet-ble-gateway · Revision 7e9b0ea
README.md GitHub · sakirsek/petkit-eversweet-ble-gateway · Revision 7e9b0ea