I'm actually interested in open source, if possible. I've got a PI-zero-W V1.1 setup and talking to it, but what am I receiving? (I am a programmer, and hope for a programming answer.)
(I've never understood companies that sell you a many thousand dollar item, and then expect you to pay more...
I have a (fairly) new Sol-Ark-12K-P, with WiFi connectivity through a "Chengdu E-Linter Information Technology Co., Ltd" device (possibly https://www.e-linter.com/smart-energy/magpie or something similar).
I would like to know how to monitor this off-grid device without using the internet.
It...
Giving monitoring and control of your system and thus your house to an unknown company on the internet is not free, only no charge. Additionally you don't really get a guarantee that their cloud service is going to continue.
It appears the Solar Assistant wants me to wire in to the RS485 port...