Leslie Update

[Paul Perry]

At 03:45 PM 23/08/99 -0700, you wrote:
. Two 
>pieces of (visually) polarized plastic plus a light+photocell might 
>give you something useful.
>
thanks Bob! that's the neatest thing I heard of for a while,
and really simple too.. I wonder if any of the home robot guys use this?

I think the output gives you two cycles for each cycle of the 
rotating sheet(? absolute value of sine?)
Well, easy enough to paint a slot around I guess.
Bring back the Optagon while we're at it.

paul perry Melbourne Australia