Sami Khawam wrote:
>
> Thanks for all who replyed.
>
> I want to track a remote controled car attached to the computer.
> The car will be more than 10m away from the PC. Any ideas?
>
> Thanks again.
>
> --
> Sami Khawam
> a9501901@unet.univie.ac.at
> http://unet.univie.ac.at/~a9501901

You have to good possibilities:

- Use a "mouse-like" system (one pair of IR emitter-receiver and a wheel for
 each direction)
- Use a shift-encoders to monitor each direction.

Bye,
Cabral