Re: gEDA-user: gEDA for mass production?

[Steve Meier <smeier@xxxxxxxxxxxxxxxxxxx>]

Dan,

The xy file has been used for programming a pick and place machine. The
vendor never complained to me if they had an issue and I too have
assumed that it is written to the letter of perfection. Next time I will
ask for explicit feed back from the programmer.

Steve Meier

On Mon, 2007-12-03 at 16:51 -0500, Dan McMahill wrote:
> John Griessen wrote:
> > Stefan Salewski wrote:
> >> Hello,
> >>
> >> til now I only did hand soldering of prototypes.
> >>
> >> But I am curious, can gEDA (pcb) data be used for automatic placement
> >> and soldering of boards? (This may be a stupid question, but currently I
> >> do not know which data board manufactures use for placement of devices.)
> > 
> > The footprint origin is available and can be gotten somehow -- I have not done it yet.
> > You will need to make your footprints compatible with the process; probably all
> > with origin at pads centroid, or if you know there is an optimum grab
> > point on top of the package that is not at footprint centroid, make sure that package
> > has its origin there.
> 
> The .xy file that pcb produces outputs the center as being the centroid 
> of the part and has an algorithm described in the manual for finding 
> rotation.  The actual footprint origin is not used for the purposes of 
> creating this file.
> 
> I have received exactly zero feedback as to if anyone has been able to 
> use that file in the 3 1/2 years since that capability was added to pcb. 
>   I can only assume it is the picture of perfection by which all other 
> xy files should be measured to.  Either that or no one has use it.
> 
> -Dan
> 
> 
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