Raspberry Pi 3B and Mesa 7i90HD

Why a 3B?  I happen to have one
Why the 7i90HD?  It seems like 7C81's are out of stock right now.

So, questions:
Can I use this:
store.mesanet.com/index.php?route=produc...oduct&product_id=355

will it fit the 7i90 or is it only intended for use on 7c80 and 7c81?

I have read that it is probably better to use 714TAs on the 26 pin headers as a form of voltage protection.  Initially the intention is to feed a Gecko G540 from one of the headers and nothing more, is a 714TA needed for this?

Thanks.

 

Moved to "driver boards".

Yes, you could use a 7I90 but the cabling/mechanical connections
are a bit awkward. You can connect a 7I90 to a G540 electrically
since a G540 functions as a BreakOut Board (BOB) but again its
not a direct mechanical connection because of the connector
differences. The 7C81 should be available fairly soon so I would
wait for that.

Thanks Peter,

That approach would be much easier.

When do you think the 7C81's might be available?

 

Available now

Thanks Peter,

The 3B went to another project, but I have decided to acquire a 4 to play with. This opens up some other possibilities, I think I should start another thread for those.