A proposal on SAKC

Daniel Clark dclark at pobox.com
Tue Mar 16 00:42:11 EDT 2010


On Tue, Mar 16, 2010 at 12:30 AM, Adam Wang <adam at sharism.cc> wrote:
> Hi Carlos,
>
>> I'll post kicad files soon :)
>> I think that we can design a lot of daughter boards, SAKC have a lot
>> of analog, I2C port and digital signals, so we can interface a wide
>> range of devices.
>
> We need to think a good stacking structure for daughter boards, and
> always make SAKC core board compact. Daughter Boards, proposed two:
>
> 1) Stacking above the core board, using J19 ( Header 20 * 2, ADs, FPGA
> I/Os ), J7(I2C), J6(UART), J16(AD pins & Audio I/O ); so need a
> supporter like use header to be the 4th position (arround C14 ) to
> stack diversified daughter boards, to make staking stable
> mechanically. Making daughter boards be a commodity.
>
> 2) No stacking, using J19, J7, J16 to be the extendable purposes only;
> this will cause your daugter board having three cables at least. Too
> complicated. If using this, headers are needed to change to female
> headers and make daughters with headers on bottom side.
> tks,
> Adam

There isn't some existing stacking / size standards like pc104 (but
smaller) that could be used?

http://en.wikipedia.org/wiki/Computer_form_factor seems to have a
pretty exhaustive list of existing size standards.

-- 
Daniel JB Clark | http://pobox.com/~dclark | Activist; Owner
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