dbus-goecharger
Integrate go-eCharger into Victron Energies Venus OS
Purpose
With the scripts in this repo it should be easy possible to install, uninstall, restart a service that connects the go-eCharger to the VenusOS and GX devices from Victron. Idea is inspired on @fabian-lauer 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
How it works
My setup (only relevant for this script)
- 3-Phase installation
- Venus OS on Raspberry PI 4 4GB version 1.1 - Firmware v2.84
- No other devices from Victron connected
- Connected to Wifi netowrk "A"
- go-eCharger hardware version 2
- Make sure in your go-eCharger app that api v1 is activated
- Connected to Wifi network "A" with a known IP
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 go-eCharger is accessed via REST-API - simply the /status is called and a JSON is returned with all details A sample JSON file from Shelly 1PM can be found here
- 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 go-eCharger data every 750ms from the REST-API and updates the values in the DBus
Thats it 😄
Restrictions
This script until now supports reading values from the go-eCharger. Writing values is supported for "Enable Charging", "Charging current" and "Max charging current". Control of go-eCharger 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
Just grap a copy of the main branche and copy them to a folder under /data/ e.g. /data/dbus-goecharger.
After that call the install.sh script.
The following script should do everything for you:
wget https://github.com/vikt0rm/dbus-goecharger/archive/refs/heads/main.zip
unzip main.zip "dbus-goecharger-main/*" -d /data
mv /data/dbus-goecharger-main /data/dbus-goecharger
chmod a+x /data/dbus-goecharger/install.sh
/data/dbus-goecharger/install.sh
rm main.zip⚠️ Check configuration after that - because service is already installed an running and with wrong connection data (host) you will spam the log-file
Change config.ini
Within the project there is a file /data/dbus-goecharger/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 on-premise Shelly 3EM web-interface |
Usefull links
- https://github.com/goecharger/go-eCharger-API-v1
- https://github.com/victronenergy/dbus_modbustcp/blob/master/CCGX-Modbus-TCP-register-list.xlsx
- https://github.com/trixing/venus.dbus-twc3
Discussions on the web
This module/repository has been posted on the following threads: