Re: gEDA-user: PCB connections

["John Luciani" <jluciani@xxxxxxxxx>]

On Wed, Apr 23, 2008 at 11:09 PM, Ian Chapman <ichapman@xxxxxxxxxxxx> wrote:
> Hi, I thought that I was able to connect my layout footprints without
>  problems.  What I am finding is that with some of the smaller smt parts
>  that I am not able to get the trace close to the pad.  I started with
>  TQFP100_14.fp that I pulled into my footprints from the distribution.
>  It has pads defined the old way "Pad(-75 39 -25 39 11 "1" 0x00)" without
>  a clearance and mask defined.  I updated it to the new format "Pad[-7500
>  5800 -2500 5800 1100 300 1200 "" "2" "square"]" and still have the
>  situation that I'm not able to terminate the trace on the pad.  Even
>  using the Skinny lines width 5.0 and spacing 5.0 I'm not able to connect
>  to the pad.  It is fine with 0603 and soic8 parts.  All suggestions will
>  be gratefully accepted.  Regards Ian.

* Try turning of the pads and see if there is a small amount amount of copper
  under the pad.
* Are your traces and pads on the same side of the board?
* Can you connect with with "auto enforce DRC clearance" off?

(* jcl *)

-- 
http://www.luciani.org


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