Team update number 5 specifically permits us to send data directly from the robot to the dashboard (not through the driver station), but I can’t find anything new in WPILib to support this feature. Is there anything I am missing that would make it easy to to this, or should I be using C sockets?
You have the option to, but they don’t give you much to do it. You can use raw, painful C sockets, or the ZomB Dashboard System.
I, myself would use the ZomB Dashboard System. In my opinion its kind of more reliable and easier to use.