Connexion to external device

[Richmond]

You wrote:

"I wrote a simple LiveCode program running on OSX, Win, Linux, iOS and
... KindleFire (the only Android that I have), connecting an Arduino Uno
R3 + Arduino WiFi Shield. The program read the 6 analog port values and
can read/set the only 4 digital pin (5,6,8,9) remaining free when you
use the WiFi Shield (which, as probably you know, use a lot of pin :
4,11,12,13,7,10).

To increase the I/O I'm now trying to move to Arduino Mega 2560 ... ;-)

All the exchange of information is done using the HTTP/GET protocol, so
quite easy ...

If you need more info or help, free to contact me off-list ... :-)"

I am trying to send and receive information to a Valiant Roamer (turtle)
over a USB connexion (cross-platform) and would be most grateful for any 
help.

Richmond Mathewson.