You Reply: Thanks for the answer.
I want to try Xbee and APC but I'm still waiting for parts to arrive. Do you need to modify the code in a sketch for the Xbee versus normal USB serial communication with the Romeo All In One controller with the IO Expansion Shield? I am going to use USB Xbee adapter from the computer and the IO expansion shield with Xbee for the Romeo side. I will be using 2 x TEL0014 Xbee modules (802.15.4)