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Date: Mon, 4 Dec 2017 08:42:54 -0800 (PST)
From: "Frank Miles (fpm AT u DOT washington DOT edu) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To: "James Battat (jbattat AT wellesley DOT edu) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Subject: Re: [geda-user] Including parts in a BOM that are not on the board
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On Fri, 1 Dec 2017, James Battat (jbattat AT wellesley DOT edu) [via geda-user AT delorie DOT com] wrote:

> Hi folks,
>
> Do you have recommendations for how to incorporate components into a BOM that 
> are not part of the netlist or board layout?
>
> For example, I'd like my BOM to include jumpers, specialized cabling, and the 
> crimp pins and connector required to mate with an on-board header.
>
> I was thinking of creating a separate .sch file, e.g. "peripherals.sch" and 
> including it in the BOM generation but not when I "import schematics" in the 
> layout. But am curious to know how others handle this.
>
> Thanks,
> James

Our solution adds considerable flexibility at the cost of added complexity.
We use a database that is the real BOM master.  Schematic-origin BOMs are
automatically updated, adding parts (hardware, heat sinks, sockets,...),
sometimes deleting or overriding part values for specific applications,
and adding assembly notes.  It also is used in generating netlists
(including deleting pins or whole parts; altering footprints).  It is
integrated with with our ordering (tracks part costs) and cost evaluation
processes.

I too would be interested to hear how others manage these inevitable
entanglements.

 	-Frank