From: SIR P/L <sir@usage.csd.unsw.oz.au>
Subject: TECH: Tracking idea
Organization: University of New South Wales
Keywords: HMD TRACKING tracking

My dads radio controlled helicopter has a gyro in it that controls the
rear rotor.  Would it not be easy to go to a model shop, buy on of
these succers, rip it to bits, and plug it into a joystick port ?
(you might need 3 of these to do all directions though).

Also, dads submarine has a dampened hydroplane controller, which
measures the angle of the sub and controlls the rear hydroplane to
keep it level.  Once again, you could buy these, hack (pardon the pun)
into them, and ... instant tracking.

Both devices seem simple to me, both are highly accurate, and they
both have output directly to a servo - which should be real simple to
A/D into a PC.  (Analogue to digial, I mean).

Also - I bought a $100 laser.  How about using a room covered in
photodiodes and sticking the lazer on your head?  (or torch, or
whatever)

Let me know if anyone has success with these ideas.

Chris.