On Wed, 30 Apr 2008 16:11:57 -0600, you wrote:

>I have been searching for many hours now, without success.
>Does anyone know of a source for small quantities (5+) of
>SDIO cards that actually do I/O? As in 8-16 digital bits
>and /or a couple analog ins/outs?
>
>I can find lots of SDIO GPS cards, and a few Wi-Fi cards,
>but there just doesn't seem to be an "I/O"  SDIO card out there.
>
>SDIO is an extension to the the Secure Digital Flash memory card
>spec that includes serial and parallel I/O.
>
>We want a simple graphical touch screen interface for disabled users,
>and PDA's seem to have the availability and horsepower needed
>for a few off application, but I need to be able to read 5 analog
>channels (10bit, sub kiloHz ok) and 4 digital in and out.
>
>Any suggestions on how to do I/O in something like a PDA? (Win CE).
>
>I'm thinking I could just hang a PIC off one, but most PDAs
>only do CLIENT mode USB so getting a USB connection to work would
>be a PITA, and serial ports are now nonexistent.
>
>Bluetooth might be an option, except that it's power hungry and
>also a PITA to program for.
>
>Thoughts?
>
>Robert

A while ago I needed to do a proof-of-concept SDIO device - I found that one particular SDIO modem
was built in such a way that the SDIO-to-serial part was easily detatched from the modem, and the
modem PCB replaced with mine in the existing case. I think it was  a Pretec modem : 
http://www.clove.co.uk/viewProduct.aspx?category=03ECAC9A-0A48-42E4-863B-9401FAB4234E&product=777D1161-DA3D-4B6F-BE3B-95E1B8D70694
The SDIO part had a female  edge connector type arrangement, and just needed a suitably shaped PCB
to lock into it. 

The Pretec GPS unit looks like it uses the same SDIO card part.

I probably still have the pinouts somewhere - email if interested.


 





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