Can you post some of your code?

It looks like the physical pin color was shifted from dark gray to light blue.  The LED and SPI physical pin bubbles remain dark gray (no pun intended).

Right, the SPI pins can only be pulled from the "SPI" header (MOSI digital 75, MISO digital 74, SCLK digital 76).  The select lines supported are digital pins 4 and 10.  All these are 3.3 volt logic even though there is a 5 volt pin on the SPI header, apparently for legacy. The pinout diagram is at http://arduino.cc/forum/index.php/topic,132130.0.html

SPI "extended" function call documentation for Due is at http://arduino.cc/en/Reference/DueExtendedSPI  It would infer that the pin state is set in SPI.begin as that is when they can no longer be used for general I/O.

Are your pin numbers, select, and function calls all per above?  Are your logic lines ok with 3.3 volt signals?

This isn't a crosspost, more of a notation

I kindly request the Arduino team look at forum post http://arduino.cc/forum/index.php/topic,118440.0.html and incorporate IDE enhancements into the main code branch.

Thank you for your consideration.

This build and game was posted to Make magazine http://blog.makezine.com/2013/01/14/arduino-esplora-video-game/

New Arduino Blog post in German and English on using Esplora as a tethered game controller:

http://arduino.cc/blog/2013/04/18/lets-go-german-with-arduino-video-tutorials/

Check this forum to see games with an attached display http://arduino.cc/forum/index.php/topic,142511.0.html

Glad you got it working

can the weatherboard communicate at 3.3 volt?  if it is using 5v signals it could fry the Due input rx

what are your symptoms - hangup, no data, garbled data?  Is the board compatible with 3.3 volt logic on Due?. Are you connected to rx1 and tx1 and you have rx of board to tx of due and visa versa?

double check tx on arduino goes to rx of target and visa versa.  many seriall programs work to pc but they forget to cross them on hooking to real hardware.

that error means you need to change the board type in the arduino IDE. Play around until one works

you might ask in the Due subforum

that message means that the board selection is not correct.  go to the iteadstudio site and see what type of arduino it is supposed to emulate then select that board in the arduiino software.. best wishes

great work.  when you believe its ready, post your lib on the library thread

sounds like cool tech for an alarm system