Question about ground wiring

Other Hardware General Electronics
1

Hello everybody,

I've been building this midi controller in a wooden/acryl housing with 9 slide potentiometers. I wired all the ground and 5V terminals in series, but recently when I read about proper grounding (something I didn't know was a thing - yes, I am a beginner in electronics!) I started to wonder if this is ok solution. Or if at least the ground should be wired paralel? Or does it matter with the resolution that is needed in midi-controller?

Also as the case is not conductive material, could the lack of chassis grounding be a possible propblem?

Is there a some good sources about proper grouding techniques for this kind of projecst?

Thanks for help!

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2

Low current series GND wiring of potentiometers should be okay.

When it comes to higher current components, star GND wiring is always suggested.

A metal chassis GND connection is a good idea.

3

It shouldn't be a big problem. Digital is highly-immune to noise, including ground loop noise. And the DC voltages in your controller can be easily filtered.

And, MIDI serial connections are opto-isolated so there is no common (signal) ground between devices. (USB MIDI doesn't have optical isolation.)

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