Programming help
 

i have figured out how the cam works and what not but my question is:
is the cam always moving or do i have to program it to move?
i would like to program the cam so that when i flip a switch the cam will start to search for the light and then move the robot accordingly. how could i set it to start searching when i flip the switch?

if there is a post somwhere about this please tell me, but i have searched and can't find anything.