To preface, this project requires a user to use DNS overrides to have cync devices talk to a local host running CyncLAN. Another hard requirement is that there must be at least 1 non-battery powered wifi device.
This project allows you to have local only control of most Cync devices using MQTT JSON payloads. It was designed to be used with HASS and uses the MQTT auto discovery feature.
The mains powered wifi cync device acts as a TCP ↔ Bluetooth bridge allowing control of Bluetooth only devices. Bulbs, plugs and basic switches have been confirmed to work.
There is decent documentation linked in the repos README and detailed install/DNS overrides instructions. Please feel free to ask questions here or in the linked repo.
Enjoy!