maximum camera usage

[Ornocarbo]

I have a query on cameras that can be mounted on the robot. Our team is thinking of using the Kinect to tell distance to the goals to send a message to the frc drivers station in order to judge proper distance away. I also tossed around the idea that in addition to that function to also include the camera to judge if the robot is centered with the goal. That would be entirely a Kinect function, the team would use the axis network camera to judge how many frisbees are in the loading system. My question is that is there a limit to how many that can be used on the robot and still be legal?