Re: [Gumstix-users] Overo - GPMC - Minimal Expansion Board Configuration

[Steffen S. <sc...@cs...>]

Hey Tyler,
thanks for the answer!

I've already stumbled upon the Eagle libraries. But as I understand it,
the alignment is not purely a layout issue, but more a
production/soldering challenge. As we would most porbably end up doing
that by hand, I reckon it would be easier if I could get around that.
Will the 3 pins on J7 be enough to power the Overo?

Thanks!
Steffen

On 06/04/2012 05:12 PM, Tyler Frelyt wrote:
> I don't think the alignment is that difficult of an issue, but if
> you're really worried about it, why don't you download the free
> version of eagle PCB and then get the gumstix eagle libraries here:
>  
> http://pubs.gumstix.com/boards/COMS/
>  
> Those include an overo part which is both J1 and J4 properly spaced
> and the alignment holes that will make your connectors mount
> properly.  You can only make 4" x 6" two layer boards with the free
> version of Eagle, but for as little as you want to pin out that
> shouldn't be an issue.
>
>  
> On Mon, Jun 4, 2012 at 1:46 AM, Steffen Schuetz <sc...@cs...
> <mailto:sc...@cs...>> wrote:
>
>     Hi,
>     as I already mentioned in another thread, I would like to use the GPMC
>     to communicate with an FPGA. To see if the setup in the gumstix is
>     producing the desired output, I would like to build a minimal
>     expansion
>     board that allows me to access the GPMC signals. Therefore I would
>     like
>     to know if it is possible to only use J4?
>     I would connect
>
>         Pin 1 and 2     to VCC
>         Pin 3 and 33   to GND
>
>     and route out the GPMC related Pins to connect to the
>     oscilloscope. Will
>     that be enough to get the overo up and running and communicate to
>     it via
>     the wireless interface? Or are any signals of J1 needed? By just using
>     one I could avoid the alignment issue...
>
>     Thanks in advance!
>     Steffen
>
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