while gathering informations for my next project, I stumbled over your PiPowerMeter two times on two different pages. Here and on openenergymonitor.org. It seems, that your PiPowerMeter fits perfectly to my needs
I really like your idea. It's simple and very flexible!
However, I will make my own PCB. Including the CS5463, the multiplexers and the current and voltage transformers. The system should be mounted directly in the breaker box, so I dont need these 3.5 mm jacks. My plan is to use transformers, which are directly mounted on the PCB.
So here are my questions:
- what kind of configurations are possible with your SW? Means how do I tell the system, what kind of transformer I use (e.g. 1000:1) and what kind of shunt resistor (for the current measurement)? I took a look at your schematics on GitHub. As far as I've seen, youre using 5 ohm resistors. That would be quit to low for my 1000:1 transformer to get full scale at e.g. 20 A.
- Similar question for the voltage measurement. I was planning to use a 10:1 transformer. On the secondary side, the voltage will be divided by resistors to fit the full scale input of the CS5463. Is it possible to configure the system via the web interface or somehow else, to fit these input configuration?
A lot to read. Hope you find the time to answer my questions...
Greetings from Germany,