Very nice! I would suggest adding a touch sensor at the top! And I could make an LDD of this for you if you'd like!
I actually just got the ldd recently, so I don't know where the pieces are, so I looked at every lego mindstorms piece and 2 pieces weren't there. I thought of that at first, but it made the joystick a little uncomfortable, so I gave the job to the middle nxt button. thanks for the comment. (:
very nice but you should really add a program that's the only tricky part of making a blue tooth joystick
this is an easy to build joystick. It can be used to control NXT robots via Bluetooth. I could not make the ldd because it didn't support a piece I needed. the pictures might help you build the robot. It can also be used as a game controller.