Tesla Car API to MQTT bridge for controlling car charging. I'm publishing for reference by others, it's not currently ready for prime-time.
This is based on TeslaPy. Due to changes in the Tesla auth process, getting the initial login is a bit of a mess.
It is designed to work with Home Assistant, and will publish the required auto-discovery messages at startup.
Once downloaded, install the requirements (I would recommend a virtual env):
pip install -r requirements.txt
The next thing is to get a cache.json file, this is the messy bit. Download the latest TeslaPy, go to the directory, and then run python cli.py -e <your email>. This will then open a web browser, and ask you to login. Once logged in, you should get a "Page Not Found" error page - ignore that - copy the full URL, and paste it into the prompt. The program will then exit, but you'll have a cache.json file in the current directory. Copy this file to your teslacartomqtt directory, you're then ready to run the program.
Start the program as follows:
python teslacartomqtt.py --mqtthost=<mqtthost> --email=<tesla login email>
You will then start getting events on your MQTT server, you can then set charge level, eg:
mosquitto_pub -t tesla/car/charge-limit/set -m 80