Please bear with me - I'm not an engineer, I'm a software developer so lack the language / knowledge to describe what I want precisely.
I'm controlling a servo to rotate /pan a platform to hold a camera (think pan/tilt). This is fine.
However, I'd like to house the servo/electronics in a waterproof box, and have a platform on top of the box that Pans.
How can I transfer the rotation through a waterproof enclosure? Is there such a thing as a waterproof bearing, that the servo can rotate one side within the enclosure, and have the rotation exposed on the outside, so I can attach the Panning platform to it?
Does such a thing exist? If so, what is it called?
If not, surely this is a problems that has already been solved Can anyone direct me to a solution for this?