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From: "karl AT aspodata DOT se [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] lepton netlist
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Comments: In-reply-to "=?utf-8?Q?Stephan_B=C3=B6ttcher?= (geda AT psjt DOT org) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
   message dated "Thu, 25 Apr 2024 20:50:48 +0200."
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Date: Fri, 26 Apr 2024 22:34:43 +0200 (CEST)
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Precedence: bulk

Stephan:
...
> > Soo, what do you use the substitution for ?
> 
> My boards often have a large number of instances of the same circuit,
> with different gain configurations that are configured with parameter
> attributes attached to the subschematics symbol instances to change some
> resistor values.
...

 I realized another way to do this. I have a program which collects
 ready made sub pcb files for a subpage. See:
 
 https://www.delorie.com/archives/browse.cgi?p=geda-user/2022/11/06/03:11:40
 https://www.delorie.com/archives/browse.cgi?p=geda-user/2023/03/14/19:50:18

 It takes ready made sub pcb files for a design and prepends the
 source syms refdes value to the contained elements and writes that
 out to the current directory, one file per source symbol.
 I could update that program to also change an elements
 value and solve your case in that way.

 That wouldn't help with bom files, but it makes it esier to make
 a pcb design with many sub pages/subpcbs. It expects the sub pcb files
 to be in the same dir and have the same base name as the sub sch file.
 Since I mostly do two layer pcbs, it also produces an upside down
 version of each subpcb.

 Run it on the top sch file, start a new pcb with your desired
 dimensions, for each collected sub pcb file "add layout" and
 place the buffer. Then when all sub pcbs are placed, run e.g.
 lepton-sch2pcb and complete the pcb.

Regards,
/Karl Hammar