Hello,
been following the website for a while, there is a lot of useful information. Got a question, which can not find an answer for.
I am a mechanical engineering student, and try to tinker with elecronics on my spare time.
I am trying to automate the old mini mill into cnc machine using arduino mega and have a dilema with the earth loop through the USB cable, used to pass data to the PC.
uC is housed in steel box, which is earthed. All the cables to the linear displacement transducers have single earth to the same steel box. I draw a rough diagram to ilustrate the situation.
Should I unsolder the USB ground casing from the uC, to prevent the earth loop? Any common practices in such situations?
Cheers