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From:	"Chad Parker (parker DOT charles AT gmail DOT com) [via geda-help AT delorie DOT com]" <geda-help AT delorie DOT com>
Date:	Tue, 29 Oct 2019 13:24:31 -0400
Message-ID:	<CAJZxidBJqdZGTHdGk1gXduGPMcp_9kJg8TGCStuFWtBq5kqp2Q@mail.gmail.com>
Subject:	Re: [geda-help] Question: New User - Can One Create a Part with Via
	connected with Trace to Pad?
To:	geda-help AT delorie DOT com
Reply-To:	geda-help AT delorie DOT com

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pcb "elements" (footprints) support only a small subset of pcb features,
including pins, pads, and silk lines/arcs. Anything you want in a element
has to be one of these things.

You can create the via in your element as a pin. pcb treats pins and vias
identically in nearly all circumstances. You can create the trace in your
element, and call it a pad. In fact, when you're creating footprints with
the GUI, you draw the pads as lines, and then convert the lines to pads at
the end of the process. So, if you want to draw a line in a footprint, you
can, you just have to convert it to a pad. This does limit you in that you
can only put pads on the outer layers of pcbs.

The presence or absence of components should be essentially irrelevant. pcb
doesn't care one way or the other.

--Chad

On Mon, Oct 28, 2019, 18:04 John L. Males (jlmales AT gmail DOT com) [via
geda-help AT delorie DOT com] <geda-help AT delorie DOT com> wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Hello,
>
> I have a part with a pair of square solder pads that is like an
> oversized SMD pad.
>
> I have been trying a number of different ways to add to the
> part a Via that has a connecting trace between the Via and one
> of the two square pads as a part.  I have looked ad different
> parts to see if I can figure out how to accomplish this as well
> as searching the internet.  After a few days of trying I am
> stumped.
>
> The reason for such a part is to enable it to be easy
> to create PCB variations not only with ease and quickly, but
> accurately.  This PCB has no components which I suspect is why
> what I am trying to accomplish is a challenge.  I have a part
> for the air flow holes and a part for the screw mounting holes.
>
> First question is creating a part with a Via, and connecting
> trace to a pad is possible?
>
> Second question is would I be safe to assume if the first
> question is possible it means I could create a trace connecting
> a copper area to a pad that doe not need a Via?
>
> The first question is so I can connect the bottom copper area
> to top side of PCB to avoid the trace being on bottom side of
> PCB that will be mounted to metal support.  There is enough
> space between the edge of copper area and the metal support to
> place a via at the edge of the copper area to enable the
> connecting trace to be on the top side of PCB so the trace makes
> no contact with metal.
>
>
> John L. Males
> Toronto, Ontario
> Canada
> 28 October 2019 17:38 -0400 EDT
>
>
>
>

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Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div dir=3D"auto"><div>pcb &quot;elements&quot; (footprint=
s) support only a small subset of pcb features, including pins, pads, and s=
ilk lines/arcs. Anything you want in a element has to be one of these thing=
s.<br></div><div><br></div><div>You can create the via in your element as a=
 pin. pcb treats pins and vias identically in nearly all circumstances. You=
 can create the trace in your element, and call it a pad. In fact, when you=
&#39;re creating footprints with the GUI, you draw the pads as lines, and t=
hen convert the lines to pads at the end of the process. So, if you want to=
 draw a line in a footprint, you can, you just have to convert it to a pad.=
 This does limit you in that you can only put pads on the outer layers of p=
cbs.<br></div><div><br></div><div>The presence or absence of components sho=
uld be essentially irrelevant. pcb doesn&#39;t care one way or the other. <=
br></div><div><br></div><div>--Chad<br></div><div><br><div class=3D"gmail_q=
uote"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, Oct 28, 2019, 18:04 Joh=
n L. Males (<a href=3D"mailto:jlmales AT gmail DOT com" target=3D"_blank">jlmales@=
gmail.com</a>) [via <a href=3D"mailto:geda-help AT delorie DOT com" target=3D"_bla=
nk">geda-help AT delorie DOT com</a>] &lt;<a href=3D"mailto:geda-help AT delorie DOT com"=
 target=3D"_blank">geda-help AT delorie DOT com</a>&gt; wrote:<br></div><blockquot=
e class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc sol=
id;padding-left:1ex">-----BEGIN PGP SIGNED MESSAGE-----<br>
Hash: SHA1<br>
<br>
Hello,<br>
<br>
I have a part with a pair of square solder pads that is like an<br>
oversized SMD pad.<br>
<br>
I have been trying a number of different ways to add to the<br>
part a Via that has a connecting trace between the Via and one<br>
of the two square pads as a part.=C2=A0 I have looked ad different<br>
parts to see if I can figure out how to accomplish this as well<br>
as searching the internet.=C2=A0 After a few days of trying I am<br>
stumped.<br>
<br>
The reason for such a part is to enable it to be easy<br>
to create PCB variations not only with ease and quickly, but<br>
accurately.=C2=A0 This PCB has no components which I suspect is why<br>
what I am trying to accomplish is a challenge.=C2=A0 I have a part<br>
for the air flow holes and a part for the screw mounting holes.<br>
<br>
First question is creating a part with a Via, and connecting<br>
trace to a pad is possible?<br>
<br>
Second question is would I be safe to assume if the first<br>
question is possible it means I could create a trace connecting<br>
a copper area to a pad that doe not need a Via?<br>
<br>
The first question is so I can connect the bottom copper area<br>
to top side of PCB to avoid the trace being on bottom side of<br>
PCB that will be mounted to metal support.=C2=A0 There is enough<br>
space between the edge of copper area and the metal support to<br>
place a via at the edge of the copper area to enable the<br>
connecting trace to be on the top side of PCB so the trace makes<br>
no contact with metal. <br>
<br>
<br>
John L. Males<br>
Toronto, Ontario<br>
Canada<br>
28 October 2019 17:38 -0400 EDT<br>
<br>
<br><br>
</blockquote></div></div></div>
</div>

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