Re: gEDA-user: Fiducial

[Dan McMahill <dan@xxxxxxxxxxxx>]

John Griessen wrote:
> Dan McMahill wrote:
>
> > > > Does this need to be a feature?
> > >
> > > I'm not an expert in PCB layout tools but  it seems worthy 
> >
> > I think it is important but I'm not sure when I'll have time.  I 
> > wonder if maybe just a "nopaste" flag for pins/pads is enough. 
>
>
> If we could show it as a layer and add a rectangle, I think it would be 
> less error prone.   Checking for such rare things as an added rectangle 
> on soldermask or paste could be like:   show only solderpaste layer, 
> select all, see count.

so actually, I ended up looking this instead of sleeping like I should 
have been doing.  I have added, but not yet committed, support for a pad 
having a "nopaste" flag.  It does what it sounds like.  This would let 
you create a fiducial element.  I added a bit to the drc code that just 
gives you a warning and a count when you find "nopaste" pads.  So you'll 
be told that you don't have drc violations but you may get a line like:

warning:  4 pads have the no paste flag set.

Any further comments from anyone before I check this in?  Allowing the 
user to prevent a solderpaste stencil opening is important for fiducials 
but it also provides a mechanism for a user screw up and miss it easily 
which is why I wanted to at least provide the count.

-Dan


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