ha-ledvance-tuya-resync-localkey

pyscript for homeassistant to resync local keys from private tuya API.

This also works for Sylvania devices by changing/uncommenting the keys in pyscript_modules/tuya/const.py.

This repository includes

• A script print-local-keys.py to print out local keys for your Ledvance devices (They must be already registered in the Ledvance app), which can be used in the LocalTuya integration for Home Assistant
• Setup via Pyscript Integration to automatically resync local keys

To just print out your local keys...

First, create a Python 3 environment - version 3.10 is confirmed as working.

Then install the dependencies and run the script:

pip install -r requirements.txt
python print-local-keys.py

If you want to run the script non-interactively, set the environment variables LEDVANCE_USERNAME and LEDVANCE_PASSWORD to your Ledvance account credentials.

How to resync local keys automatically (via service)

If you have many devices and reset them sometimes by accident, like me, you can create a service for resyncing the local keys. (New local keys are generated if you reset/re-register your devices).

Prerequisites

• Pyscript Integration
• Set allow_all_imports and hass_is_global to true. (Described here)
• Ledvance account with devices configured

Setup

• Replace placeholders in pyscript\sync_tuya_keys.py with your Ledvance account credentials.
• Copy pyscript_modules and pyscript to your Home Assistant config directory.
• In your Home Assistant dashboard should now be under Developer tools --> Services a service called Pyscript Python scripting: synctuyakeys that you can call. (You may have to restart before)
• (If you want Log output, you need to change the log level to INFO or use jupyter)

Credits

Credits for the python Tuya API client go to: https://github.com/rgsilva/homeassistant-positivo I also extracted the keys/secrets by following his guide: https://blog.rgsilva.com/reverse-engineering-positivos-smart-home-app/