X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient: geda-user AT delorie DOT com
Message-ID: <1432996091.3516.62.camel@akerlind.nu>
Subject: Re: [geda-user] PCB implementing slot attribute in a footprint
From: Jonatan =?ISO-8859-1?Q?=C5kerlind?= <jonatan AT akerlind DOT nu>
To: geda-user AT delorie DOT com
Date: Sat, 30 May 2015 16:28:11 +0200
In-Reply-To: <5568A70F.206@xs4all.nl>
References: <1432916564 DOT 3024 DOT 451 DOT camel AT crowe DOT localdomain>
	 <5568A70F DOT 206 AT xs4all DOT nl>
Content-Type: text/plain; charset="UTF-8"
X-Mailer: Evolution 3.12.9-1+b1 
Mime-Version: 1.0
Content-Transfer-Encoding: 8bit
X-MIME-Autoconverted: from Quoted-Printable to 8bit by delorie.com id t4UESOrh023725
Reply-To: geda-user AT delorie DOT com
Errors-To: nobody AT delorie DOT com
X-Mailing-List: geda-user AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com
Precedence: bulk

On fre, 2015-05-29 at 19:51 +0200, Bert Timmerman
(bert DOT timmerman AT xs4all DOT nl) wrote:
...
> Hi Mike and list members,
> 
> I think that "slot" properties resembles more to a "trace" than to a "pin".
> 
> Traces do have a start point, end point, copper clearance and width, and 
> could give straight "line" slots and curved "arc" slots.
> 
> Maybe drawing slots on a separate layer as lines and arcs, and post 
> processing the resulting gerber file for that hat layer (with awk or 
> sed) can be a short term solution, YMMV.

I have done this approach for both plated and unplated slots, i.e.
drawing lines where the slots will be and also putting a hole/pin at
both ends of that line. Post processing of this is simply exchanging the
hole at the beginning of the line with an M15 command, followed by a G01
(with coordinates) command, followed by an M16 at the hole/slot at the
end of the line. Sequence is ended by an M17 and finally M30. For
circular tracks (or arcs) G02 or G03 could probably be used in a similar
fashion.

There is a patch for gerbv for adding G00/G01 commands:
http://sourceforge.net/p/gerbv/patches/56/

I would love to see slots supported by pcb!
-- 
Jonatan Åkerlind <jonatan AT akerlind DOT nu>