General

Reads data from a Voltronic/MPPSolar inverter and publishes it to MQTT. Supports Home Assistant MQTT auto discovery. Right now this is still incomplete but the following works:

• publishing QPIGS, QPIRI, QDOP and QMOD values
• raw command receiver
• setting battery trigger capacities via PBCC, PBDC and PSDC
• setting output and charging source priorities
• setting maximum charging current

See https://github.com/jblance/mpp-solar/tree/master/docs/protocols for different Voltronic protocols and commands

Tested with a MPPSolar PIP5048GEW, an OrangePi Zero 2W and a CH340 USB to serial adapter from Aliexpress.

Build

1. mvn clean
2. mvn package

Docker

(Check docker-build.sh if you want to build & docker build at the same time) Run build first. Then for running on a PI/ARM device:

1. docker build -t mpp-test-arm --platform linux/arm64 .
2. docker save mpp-test-arm -o mpp-test-arm.tar
3. Copy mpp-test-arm.tar file to device
4. Run docker load -i mpp-test-arm.tar on device
5. Copy mqtt.properties to device and adapt configuration to your MQTT broker
6. Copy docker-compose.yml to device and adapt devices section, first port should match your host port
7. docker-compose up on device in the directory where docker-compose.yml is
8. You should see the log with something like "Published MQTT discovery configurations for Home Assistant"
9. If everything is alright quit the application with CTRL+C and run in daemon mode with docker-compose -d to keep it running

Home Assistant

Requirements:

• Home Assistant MQTT integration installed and connected to a MQTT broker
• mqtt.properties configured to connect to that same MQTT broker
• topicPrefix in mqtt.properties set to homeassistant

HA should then automatically pick up the different published entities through its MQTT integration.

TODO

• implement more commands from inverter protocol manual