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Re: Back annotate references from PCB

 

Hi all,
I would say, pin swapping is just will be an another tool (you
probably need some specific piece of GUI for that).
The reason I want back-annotation is to have proper geometrical
(geographical) re-annotation. We have contractor who ask if possible
renumber passive components in geometrical order, otherwise assembly
man will get mad when try to solder that by hand.

On Mon, 2 Dec 2019 at 01:17, Vesa Solonen <vesa.solonen@xxxxxxxx> wrote:
>
> Andy Peters kirjoitti 1.12.2019 klo 21.45:
>
> > Anyway, it’s a lot easier to update the schematic with the new part and then forward-annotate, and this keeps both schematic and layout in sync.
>
> Assuming there is the schematic to start with. Sometimes it happens that
> there is just PCB data and one has to go backwards. Commercially that
> rarely makes sense and one may buy pretty extensive reverse engineering
> service form dedicated operators.
>
> > Pin-swapping and gate-swapping are much more important. The pin swapping makes for an interesting problem, which is making sure the resulting schematic isn’t a mess. Most likely an informal (or required) “rule” would be that you draw a net from each pin that can be swapped and you give them net labels, but you don’t draw that net to any other pin.
>
> Yes. This is exactly why I see value in a completely bilateral system.
> Drawing a schematic would benefit just as much autorouter as well as
> rubberbanding.
>
> > Thanks to everyone involved in adding the back-annotation feature!
>
> Indeed!
>
> -Vesa
>
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