Re: gEDA-user: 1-to-many pin mapping between gschem ->pcb ???

[Dan McMahill <dan@xxxxxxxxxxxx>]

> I'm sure people must run up against this, but I can't see the problem
> discussed in the archive...  am I blind?
> 
> A gschem fuse symbol is a 2-node object.  If I assign the footprint
> "fuseL", PCB connects the 2 rats to the same end of the fuse.  "fuseL"
> is a 4-pin device & the rats are assigned to pins 1 & 2, but pads 1&2
> belong to the same metal fuse clip.  
> 
> I fixed my 1st pcb attempt in Emacs by changing fuseL pin 2->4 in the
> net, and adding a pin 2 (clone of pin 1)& pin 3 (clone of pin 4) in the
> nets.  Now the rats correctly connected to each end of the fuse & also
> connected both pads of each fuse clip.
> 
> What is the correct way to fix this?  Surely users must be faced with
> the situation where a logical connection on a symbol maps to more than 1
> pin on a physical element.  The desired outcome is a rat that connects
> to each physical pin.
> 
> I could alter the fuseL element pins viz:
> 2 -> 4
> 4 -> 3
> 3 -> 2
> The rat would now connect correctly to each end of the fuse, but would
> only connect to 1 pad, not both.
 
I typically make my schematic pin count match my layout pin count.

-Dan

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