I haven't been making all the much progress on this because I've been concentrating on the Arachnio.

However, I've decided I'm going to strip down even more on the development hardware to get the software up to the demo stage. Here's what the new stack is going to look like, since I largely have the pieces:

1 x Arduino Due

1 x Arduino Mega Protoshield (for mounting stuff)

1 x MAX11300 dev board

1 x CC3000 shield

1 x Memoire shield

I think I have all the parts in hand, except an extra Protoshield. All I definitely have to write is a driver for the MAX11300 and the glue code to talk to the host. Then I have to work on the host stuff.