I routed the board first without ground planes, and then added them.
The ground planes will not merge with the buses, and can only connect
through pads. So I have a ground bus from edge to edge of the board
with a space to a ground plane that is right next to it. The
connection is through short horizontal buses on the top layer that
connect to the ground plane with pads. I would have wanted the ground
plane to flow right into the bus on the back. The only way I could
have done this was to eliminate the bus, move the ground plane over,
then connect each pad to the ground plane. I didn't want to rip that
much up after I successfully routed it. It might not be that big of a
deal but I didn't want to do it that way. I also couldn't figure out
how to have more clearance around pads with the ground plane than
standard pad to run spacing. Maybe it is obvious, but it wasn't at
the time. Also, I was quite sick of hand routing the board by that
time and just wanted a prototype.
Dave
--- In
ComputerVoltageSources@yahoogroups.com, "wiardmodular"
<wiardmodular@...> wrote:
> > I'm also not happy with the ground planes. They aren't connected
> > the way they should be and I can't get the software to do what I
> > want. The board needs to be redone.
> >
> > Dave
>
> What sort of problems do the way the ground planes were connected
> have on the software working properly?