[sdiy] Eurorack Grounding Question

[Steven Cook]

Thank you for these answers. I think I'll go with Tony's recommendation. 
The reason I have input jacks connected to the digital ground is simply 
that they are connected to the microcontroller (via transistors and 
reverse voltage protection diodes), so I assumed that the jacks should 
be also - I'll change that.

I have a couple of follow-up questions:

1. If I have a ground fill on the PCBs, which ground should it be 
connected to?

2. Which ground should the DAC be connected to?

------ Original Message ------
From: "Steven Cook via Synth-diy" <synth-diy at synth-diy.org>
To: Synth-diy at synth-diy.org
Sent: 29/12/2020 09:30:46
Subject: [sdiy] Eurorack Grounding Question

>Hi, I'm designing a Eurorack module which uses a microcontroller. The PCB has separate analogue and digital grounds joined at the power input header, but I've realised since designing it that both grounds will also be shorted together by the front panel as there are input jacks connected to the digital ground and output jacks connected to the analogue ground. I assume this would create an ground loop. Would I be better off not bothering with separate grounds?
>
>Regards,
>
>Steven Cook
>
>
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