Re: gEDA-user: Assign polygon/rectangle to a net in PCB

["James Johnston" <mail@xxxxxxxxxxxx>]

The particularly problematic issue I was having is a TSSOP footprint that
has a thermal pad to be hooked to GND node.  Obviously I want to use a
rectangle for more heat dissipation, but pcb was creating clearance around
it.

Using the technique in the message, I created a line starting from the
center of the thermal pad, and then continued to draw a rectangle using
lines to cover up the clearances created by the thermal pad in the
footprint.  It works but it seems awfully cludgy... is this the best way to
handle that scenario?

--James

-----Original Message-----
From: geda-user-bounces@xxxxxxxxxxxxxx
[mailto:geda-user-bounces@xxxxxxxxxxxxxx] On Behalf Of DJ Delorie
Sent: Monday, June 16, 2008 22:56
To: geda-user@xxxxxxxxxxxxxx
Subject: Re: gEDA-user: Assign polygon/rectangle to a net in PCB


http://www.delorie.com/pcb/docs/gs/gs.html#SMT-Blinker
(unfinished)

Planes are not "assigned" to nets, they're connected to them.  Connect
one pad (using the thermal tool or traces (make sure "settings->new
lines clear polygons" is NOT selected)) and press "o" to optimize
rats.  Then PCB knows which pins go to the plane instead of to other
pins.  You still have to connect them all manually, but at least it
indicates them correctly.


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