groupDIY 500 series mechanical specifications

[sahib]

sorry for the confusion, GndB is Power Ground....
pin 13 of Edac Connector.
GndA is pin 5.

till now I haven't had any problems connecting both GndA and PwrGnd at 0v
also for xlr pin 1 using GndA, and safety Earth to chassis only, just for testing its behavior
signal is very clean and also the last module plugged close to psu presents no issues

I apologize to everyone if my questions and requests are in a post where only mechanical infos should be shared
but I think it is useful for those who want to go for a psu like this in a DIY lunchbox and so don't make any mistakes

best

No case for an apology.

I am glad that it is working fine.

 

[sahib]

In my limited experience , a kind of mechanical connection "standard" between the front panel and L bracket or something similar would help a lot with alignment issues and the odd potentiometers sticking out. It seems like an L bracket is kind of a luxury in the DIY 500 series world

Since the front panels have limited real estate , having nuts visible is not the prettiest of sights. Some knobs definitely cover those but others barely do

Seems like it would be a relatively easy undergoing for someone here !

Here you mean the backplate on which the PCB is mounted and the fixing between the backplate and the front panel (which we call faceplate).

On our modules the backplate is fixed to the faceplate through threaded inserts/standoffs that are inserted into the faceplate. You can not standardise such fixing as the locations of the standoffs will be dictated by the front panel layout.

 

[soulsonic]

I tested out my idea of doing it all in acrylic and it seems to work well. I'll post details when I have a finalized one to show off.

 

[RSRecords]

sort of dumb 500 series question.
What sides should the card edge pads be on for a module? I'm assuming best would be both (with a via from top to bottom pcb).
but does it matter as most racks seem to have pins on both sides of the edge connector socket?

 

[sahib]

Always have it on both sides for reliability. It does not cost extra unless your design is particularly single sided.

Also do not omit any fingers. This again does not cost extra. I have seen a number of modules with fingers missing (for example PIN 3, 7, 9 and 11). Very bad design decision.