Dear members,
I'm with a small problem in my circuit design.
I have a power system here, which is supplied with 12 .
My micro-controller is supplied by 5 .
The power system and the micro-controller DO NOT share the same ground.
My question is: how to make measurements of voltage and current on the power system and feed this information into the micro-controller? If they had the same ground, that would be easy. But with different grounds, I'm not really sure how to do it!
The voltages that I have to measure range from 0 to 12 . The currents that I have to measure range from 0 to 30 .
Thank you very much for your attention!!