menu connected
wide shoutbox
/listConnections - list all current connections to shoutbox
/version - return current version
/t - shout as mr.turing
/addXMPPRelay/(xmpp buddy name) - add buddy as an xmpp relay
/removeXMPPRelay/(xmpp buddy name) - remove buddy as xmpp relay
Hello and welcome tauqueer
From what are you connecting to when your trying to communicate with the Zigbee modules ?
Are you trying to communicat from one one 2560 board to another?
I have never seen someone successfully connect a 20 pin CMOS camera to a arduino. The amount of data 640 * 480 *3 = 921,500 x 20 frames per second is 18 Megs per second which is way to much in speed & memory of any Arduino. The cameras are typically used on ARM-7 processors (ie smartphones)
If you mostly want a line follower robot, I would suggest using IR transmitter/receivers - Like this - http://letsmakerobots.com/node/28981
If your main object is to control it by the Zigbee you'll need to give more information regarding how it's currently hooked up and what you are controlling from (e.g. another arduino, a computer, other...)
If your goal is to do computer vision, then you might consider a IP camera and process the video on a computer.
Hope this helps.