X-Authentication-Warning:	delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient:	geda-user AT delorie DOT com
X-Original-DKIM-Signature:	v=1; a=rsa-sha256; c=relaxed/relaxed;
	d=gmail.com; s=20120113;
	h=date:from:to:subject:message-id:in-reply-to:references:mime-version
	:content-type:content-transfer-encoding;
	bh=p/31/RF6aLBNKwiBQhvDa+5lL3WVlaGQVUZMJMZJXB0=;
	b=KZmcxitWEMbeXBY4q6TxhJoNRYlVQpIm21dhuPvWZLoiO8b7pjyn4JIOclpQE/KQIF
	WFdHgEW3CqbQOKEfdOWOGLV0a+4E7D6L1R2BVvHKfWS8SIt6oSyHZqNZe2hYzM9OXZyb
	OpTE9L1q4sJOvVhWuFL9felFQlA+j60EoIt9d2XO8onOgLbI/uKQPC7J2BYVyDeBBmzR
	3kDw8RTsLuX7AuPV3AzMKwLxQKhPUWWd4IHiZ40WaAiyz9QCCJXmyHqD87tGwnf3V6Tu
	4fleQCBE1fLw5t6p3pV6JIP+NcgfOmBqzEztpbo2z9vVBToVQpAXJJBwDABpXYKFHaUL
	n+2w==
X-Received:	by 10.112.209.4 with SMTP id mi4mr8262309lbc.7.1445515230255;
	Thu, 22 Oct 2015 05:00:30 -0700 (PDT)
Date:	Thu, 22 Oct 2015 14:00:28 +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] A lesson from gnet-makefile
Message-Id:	<20151022140028.880a6af44286299f7baadcc8@gmail.com>
In-Reply-To:	<20151022113635.GA16105@visitor2.iram.es>
References:	<CAM2RGhSvpVvboJ-gdyrojAzggFEBnAr30CKNQBefjci-PA1n6g AT mail DOT gmail DOT com>
	<201510220112 DOT t9M1Ccfq013731 AT envy DOT delorie DOT com>
	<CAM2RGhQhNkShqtN8uyCSd7R+V4FgLXDZTvTC2RTdmKF7C_8ndA AT mail DOT gmail DOT com>
	<201510220136 DOT t9M1a5Uw015222 AT envy DOT delorie DOT com>
	<CAM2RGhQOpnBXbZXngNq=RcQTZN=UrU+PGzTZ9AC=xKNfu_zQkQ AT mail DOT gmail DOT com>
	<201510220149 DOT t9M1nrIe016145 AT envy DOT delorie DOT com>
	<CAM2RGhQ26+gpcAeTdgJpBEh0egOGLYcpizQ+B6kfTQLowEk5xQ AT mail DOT gmail DOT com>
	<20151022023002 DOT GA25952 AT recycle DOT lbl DOT gov>
	<20151022090751 DOT ecb5bc25c7d968646dea2e85 AT gmail DOT com>
	<n0ad7l$79l$1 AT ger DOT gmane DOT org>
	<20151022113635 DOT GA16105 AT visitor2 DOT iram DOT es>
X-Mailer:	Sylpheed 3.5.0beta1 (GTK+ 2.24.25; x86_64-pc-linux-gnu)
Mime-Version:	1.0
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

> > > Yes, only problem with star ground symbol in gschem is how many pins
> > > it should have. In pcb for many cases it would make sense with one
> > > common connection point.
> > > 
> > Last time this topic surfaced on the mailing list the most practical 
> > suggestion was to exploit a pecularity of text in copper: 
> > The connection check of geda-pcb completely ignores letters. Insert a 
> > large "-" and make regular tracks overlap with the character but not 
> > connect to each other.
> > 
> > This is of course an abuse of a missing feature (connection check of 
> > strings in copper) which might break if/when somebody takes the time 
> > to fix it. But at least it works now. 
> > 
> > And it gives a hint for a second best solution: Add a tag "ignore-for-
> > connection-check" which can be attached to a track segment. This would 
> > of course also not check for unwanted connections to the tagged 
> > segment. But since it is an explicit localized exception, the risk is 
> > manageable. After all, we live with not connection checked text all 
> > the time...
> 
> Indeed, having "non-conductive copper" is probably the best solution, it
> also allows to build some RF structures like directional couplers.
> 
>     Gabriel

Yes "non-conductive copper" seems reasonable although it had been better to ignore the short circuit detection between connected nets in this point. The non conductive copper could get problem with short circuits to other nets and clearance.

An improvement is better than a never implemented perfect solution. If "non-conductive copper" is the only possible method with a reasonable effort it should be used.


Nicklas Karlsson

- Raw text -