Requirements:
-
64 bit machine capable of running Linux and pypy version 3.9+ connected to the internet. Raspberry Pi 3 / Pi Zero 2 or above should suffice, though an old laptop/desktop running Ubuntu or similar would do.
-
USB to RS485 device to connect to the inverter. Please check the inverter's manual for wiring the RJ45 cable to the USB-RS458 correctly, or purchase the correct cable.
To use:
Change config.toml to the right USB adapter for your inverter. Usually /dev/ttyUSB0. Optionally change the mapper to the JSON file for your inverter.
docker-compose up -d
Then go to <ip of raspberry pi>:3000 in a browser, and import the dashboard from grafana/dashboard.json
Home assistant discovery is supported with the MQTT integration.
Mosquitto MQTT broker is run on the same docker instance to assist with new setups.
Currently only Growatt SPH-XXXX inverters are supported, or inverters that support Growatt ModBus Version 2. You can add more modbus mappings in the python/mapping folder.
Tested with a recent Growatt SPH-3600 inverter and battery pack.