I mean, a device that will just read, persist, and then push the data to a (my) server without having to buy a 3rd party software license.
The data being, in this case, electrical generation/consumption.
I've been looking at many "smart" meters and data loggers, but the ones available usually come with third party licenses to use proprietary software and such. I've been searching the internet and asking around and some people have told me to just build one myself using raspberry pi or arduinos and clamp meters but I've heard they aren't very accurate (the clamps I mean) and honestly it sounds like reinventing the wheel to me, plus, it would be hard to replicate on my other PV system's projects as I'd have to build every device from the ground up.
I guess on a grand scale the requirements would be:
- Read info from RS-485 or other industry standard
- Save it locally (for a limited time)
- Send it to my server (every minute in the best case)
Do you know any I could use? Or a similar case? How do others resolve this issue?