But what you could do would be to use the built in motion tracking of your
eyes by having a single led line that bounced from side to side of the
display at right angles to the led bar like so

     | <--Stationary Display
     |
=<==<==<= Bouncing 'KITT' Led
     |
     |

so that of your eyes track the side to side motion of the led then you
will percieve the image, whether this will actually work will depend on
how fast your eyes can track the led.

Alex

> also wont work
> several reasons
> your ear and eye are connected so that if you turn your head your eye
> automatically compensates so you stay looking in the same direction
> (unless
> you are specifically looking at somewhere else)
> this works up to about 10Hz so you have to shake your head faster than
> that
> to get anything
>
> shaking your head faster than that
> a) isnt accurate enough to give a decent picture
> b) hurts
> c) looks really silly

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.