Intercept the voltronic phone-home session for local management with mqtt and others
The inverters I have tested appear to phone home to ess.eybond.com on port 502 using a protocol similar to the one available on the serial port but wrapped in TCP and some extra magic
https://hub.docker.com/r/brilthor/voltronic-wifi-bridge
host this server somewhere private and either NAT or use static DNS to force the inverters to connect to it instaed of the remote server
usage: voltronic-wifi-bridge [-h] [-u USER] [-p PASSWORD] [-t TOPIC] [-P PORT] mqtthostname mqttport
positional arguments:
mqtthostname host name of the mqtt server
mqttport port of the mqtt server
options:
-h, --help show this help message and exit
-u USER, --user USER username for the mqtt server
-p PASSWORD, --password PASSWORD
password for the mqtt server
-t TOPIC, --topic TOPIC
mqtt topic base
-P PORT, --port PORT the port to run the voltronic server on
There is and included dockerfile and docker compose to build and run the service inside docker
Many Voltronic inverters use very similar protocols. Yours may work automatically or might need minor tweaking. Feel free to let the project know if you test it with other hardware.
| Brand | Model | Firmware Versions | Compatibility |
|---|---|---|---|
| Maple Leaf Power Systems | 6500EX-48 | 00069.05/00012.21 | Works |
- auto-reg home assistant mqtt
- feed data to influxdb (multiple versions?)
- passthrough to remote servers so the phone app still works
- add support for other inverter models
https://github.com/manio/skymax-demo for CRC algorithm Update 2023-11: found more protocol documentation which is close: https://github.com/jblance/mpp-solar/blob/master/docs/protocols/PI30_Communication-Protocol-20150924-Customer.pdf