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Mail Archives: geda-user/2016/08/01/12:46:50

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Mon, 01 Aug 2016 09:45:37 -0700 (PDT)
Date: Mon, 1 Aug 2016 18:45:35 +0200
From: "Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] Wilkinson splitter - how to implement and use?
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There is no way to deal with such RF components in gEDA. pcb check for connectivity by checking which drawing primitives on copper layer overlap and there is nothing wrong with this method. With flag to mark the drawing primitives connecting the pins within the radio component this could be solved.

I have started to look on clearance values between nets but there have been a long time now because I am busy with other tasks and I will not have time implement it even though I expect to be rather straight forward it there is a possibility to add a flag or other kind of attribute.



On Mon, 1 Aug 2016 15:53:23
"michalwd1979 (michalwd1979 AT o2 DOT pl) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com> wrote:

> Dear Members,   I need to design a RF board with some Wilkinson splitters on it. While the symbol of splitter is ready (rf/splitter-1.sym) and for pcb we have even a java generator  github.com (https://github.com/erichVK5/W ), I&#39;m not sure how to use it. The splitter is just a few fancy tracks on pcb (plus a resistor) that in fact are all connected. In schematics however this is an element with 3 pins. In pcb I can not name the splitter pins &#34;1&#34;, &#34;2&#34;, &#34;3&#34;, because this will give warnings about shorted nets. If I change schematics symbol (short its pins) there will be no warnings but all RF nets are reduced to one - that is not the case (all splitter input/output connections are lost).   Is there a better/preferred way to deal with such RF components in gEDA?  Thanks in advance,  Michael Widlok  
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>                   Dnia 1 maja 2016 00:06 michalwd1979 (michalwd1979 AT o2 DOT pl) [via geda-user AT delorie DOT com] &lt;geda-user AT delorie DOT com&gt; napisaƂ(a):
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>  Hello,   Long time ago I remember playing around with a patch that added thermals to SMD pads. There were a few issues with it, however during normal work I figured out that in fact the most usable (maybe not only for me) thermals for pads are &#34;solid&#34; - the same as setting clearance to 0. Problem with just setting clearance to 0 is when You want to change clearance to a part of board (by selecting objects and doing :changeclearsize(selected, xx, mm/mil)) is that this breaks Yours connected pads also.  Stripped version for this patch that supports only &#34;solid&#34; thermals for pads is just a few lines of code (just tested it pcb opengl version).  My question: Do You think that adding it to mainline might be a good idea? If You want to use it OK, if not it does not breaks anything.    Best Regards,  Michael Widlok

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