Hello,
I have created a schematic with gschem and converted it to a pcb
file using gsch2pcb. Now I try to do the layout.
I will do a two sided layout, bottom side should be a ground
plane with no components and only a few signal traces. On top
side I have SMD parts and a few conventional parts which needs
holes in pcb board.
Has anybody done such layout successfully with pcb (PCB version
20060422)?
For testing I have created a very small board with an OPAMP with
DIP footprint, two resistors in SMD (1206 footprint), two
capacitors in SMD (1206 footprint) and some headers for signal
and power.
Without a ground plane, autorouting works. But with ground plane
I was not able to get a correct layout. Autorouter is generating
shortened nets, Optimizer removes necessary vias...
And I was not able to fix these errors manually.
Unfortunately there is no tutorial for this process. I have found
some advice in this mailing list and gEDA wiki, but it will not
work for me.
Additional question: In a complicated layout it may be impossible
to layout all traces, so one has to use short isolated copper
wires (Drahtbruecken) or SMD-resistors with zero ohm resistance
to make some connections. How can I do this?
Best regards
Stefan Salewski
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