Looking at the hardware document in the GitHub repo - https://docs.google.com/document/d/1hdcTf9xUmsjRPd3waJEkQf1B...

Is that really a RS245 or RS485?

https://www.makerfabs.com/usb-rs485-convertor.html#!/back

I am in the mix for doing this over the next week or so. Totally love the hardware documentation and after tearing down a 900w solar array experiment, and having most if not all the materials (in Buffalo no less) we have a new shed w/ the materials to get online and on it.

Pergola lighting, internet web server, and plant hydroponics .. fun fun! (sorry, really love this particular type of stuff, so nerding out like - go home right now from the day job and just get after it).