dbus-TeslaWallConnector

Integrate Tesla Wall Connector into Victron Energies Venus OS

Status

Reading data from Tesla Wall Connector works. Writing data to Tesla Wall Connector is currently not possible due to a missing API. Use the car api with node red contrib instead if you need to change the values.

There still might be some issues

Purpose

This repo enable visualizing data of one Tesla Wall Connector VenusOS and GX devices from Victron. Idea is inspired on @fabian-lauer, @viktorm and @trixing project linked below, many thanks for sharing the knowledge:

• https://github.com/fabian-lauer/dbus-shelly-3em-smartmeter
• https://github.com/trixing/venus.dbus-twc3
• https://github.com/vikt0rm/dbus-goecharger

How it works

My setup (only relevant for this script)

• 3-Phase installation
• Venus OS on Cerbo GX - Firmware v3.30
• Tesla Wall Connector hardware version 3
  • needs to be in the same network as the cerbo (a static ip needs to be condigured if you can not reach the Wall Connector via "TeslaWallConnector.local")

Details / Process

What is the script doing:

• Running as a service

• connecting to DBus of the Venus OS com.victronenergy.evcharger.http_{DeviceInstanceID_from_config}

• After successful DBus connection the Tesla Wall Connector is accessed via REST-API

  • http://ip_of_connector/api/1/vitals
  • http://ip_of_connector/api/1/lifetime
  • http://ip_of_connector/api/1/version

  currently not used

  • http://ip_of_connector/api/1/wifi_status

• Serial/MAC is taken from the response as device serial

• Paths are added to the DBus with default value 0 - including some settings like name, etc

• After that a "loop" is started which pulls Tesla Wall Connector data every 2.5s from the REST-API and updates the values in the DBus

Restrictions

This script until now supports reading values from the Tesla Wall Connector. Writing values is not supported as there is currently no known API. Control of Tesla Wall Connector by the victron system in "Mode" "Auto" is not supported for now and changing the value will have no effect.

Pictures

Install & Configuration

Get the code

Log into your GX device via ssh and run the following scripts:

wget https://github.com/Sonny13/dbus-TeslaWallConnector/archive/refs/heads/main.zip
unzip main.zip "dbus-TeslaWallConnector-main/*" -d /data
mv /data/dbus-TeslaWallConnector-main /data/dbus-teslawallconnector
chmod a+x /data/dbus-teslawallconnector/install.sh
rm main.zip

Change config.ini

Within the project there is a file /data/dbus-teslawallconnector/config.ini - just change the values - most important is the deviceinstance under "DEFAULT" and host in section "ONPREMISE". More details below:

Section	Config vlaue	Explanation
DEFAULT	AccessType	Fixed value 'OnPremise'
DEFAULT	SignOfLifeLog	Time in minutes how often a status is added to the log-file current.log with log-level INFO
DEFAULT	Deviceinstance	Unique ID identifying the shelly 1pm in Venus OS
ONPREMISE	Host	IP or hostname of Tesla Wall Connector

nano /data/dbus-teslawallconnector/config.ini

Start the Service

/data/dbus-teslawallconnector/install.sh

⚠️ Check configuration after that - because service is already installed an running and with wrong connection data (host) you will spam the log-file

Debugging

Check if the script is running

svstat /service/dbus-teslawallconnector show if the service (our script) is running. If the number of seconds shown is low, it is probably restarting and you should look into cat /data/dbus-teslawallconnector/current.log.

Restart

you can restart the service after a config change with

/data/dbus-teslawallconnector/restart.sh

Stop / Uninstall

you can stop the service

/data/dbus-teslawallconnector/uninstall.sh