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Growatt SPH-XXXX series to MQTT and Grafana

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.