[sdiy] Buffering 0V when using a pot as a voltage divider?

[David G Dixon]

> >Yes, but if ground has a measurable impedance, it ain't much 
> of a ground.
> >That's all I'm saying.
> 
> That's why real men use wire, not those ridiculous, 
> infinitesimally thick PCB traces.

In my personal layouts, I always make the ground traces about twice as wide
as all other traces, and I've got two stranded-wire cables delivering ground
to every module (and just one for each rail), which is pretty standard.
Anything you can do to decrease the impedance of ground is a plus.