Cristian Paul Pe?aranda Rojas wrote:
> What about the male connector sourcing as well, for the outsider of
> china want to add expansion boards?

Sourcing the male connector is super-easy. It's a standard
0.1" header with 230-240 mil mating length.

If you want to mass-produce a board, you'd get a header of just
the right size, something like this guy:

http://search.digikey.com/us/en/products/67996-420HLF/609-3221-ND/1878553

For DIY, you wouldn't want to have a large collection of different
headers, so you'd probably get one of these instead and just cut
off suitable pieces:

http://search.digikey.com/us/en/products/4-103777-0/A26525-40-ND/297918

>> domain, I think it wouldn't make much sense to try to use the
>> extra pins for even more signals.
> 
> I agree, more signals :-)

Naw, not more signals. 2*(6+7) is enough :-)

Let's keep the three remaining FPGA pins in the 3V3 domain
as a reserve for future uses. Maybe add TPs while we're at it.

- Werner
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