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Re: gEDA-user: Light? Heavy? Reuse...



> If BOM is the central place of information, then it may be very
> useful to have a way to transfer some information back into
> schematics or pcb file. For example we may change value or footprint
> in the BOM and want to transfer this information back to
> schematic. Is there a method available?

My idea had the concept of "direct" vs "inferred" attributes in
gschem.  Direct ones are the ones you specify, like device and value.
Inferred ones are those which are determined by process of elimination
through some external database.  Example: If you picked a 4.7K 0603
resistor, the database might infer a manufacturer's part number and
vendor.  It might even infer the 0603 based on, for example, some
min_wattage attribute and a default preference for certain package
types.

But my idea didn't *require* it to get back to gschem.  The gsch2pcb
process would query the database (you can read this as "bom" if you
like ;) to find out footprint and pin mapping data for everything it's
importing.  The schematic doesn't need to know the footprint, pcb
does.


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