Re: gEDA-user: freedog pictures

["John Luciani" <jluciani@xxxxxxxxx>]

On 3/9/07, Peter Baxendale <peter.baxendale@xxxxxxxxxxxx> wrote:
> > That board is the Zigbee radio board for my MSP430F169 board. The DB-9 is
> > an RS-232 port (the uC board has a USB port). The T-shaped trace is a
> > folded dipole
> > that should match the Chipcon 2500 reference design. I do not see a TO220 ;-)
>
> I'd be interested to know how you copied the reference design. I made
> some Chipcon 2420 Zigbee boards a couple of years ago using Orcad and
> just tried my best to get the layout and dimensions right by measuring
> things on the reference gerbers using a gerber viewer (the boards work
> fine as it turns out).
>
> Since it's quite common to get reference designs that include gerbers, I
> was wondering if it would be feasible to to convert these back into,
> effectively, a pcb footprint. I'd have thought there was enough
> information in the gerber and drill files to do this - but I admit I
> haven't thought it through.

The antenna was dimensioned in the reference design. I created a footprint
for the antenna only (it is on my luciani.org). I used the component
placement from the reference design as a guide to place my components.

If you convert the gerber file to an image that can be placed onto a layer
I believe you could use it as a template while you insert components and route.
I think there may be some information on doing this in the email archive (or
on the wiki).

(* jcl *)

--
http://www.luciani.org


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