In a message dated 96-10-21 22:59:59 EDT, you write:

>Anyway, as you can imagine, I am using visible light and have all sorts of
>problems with ambient lighting.

Roger,

I understand that you are using the visible light as part of the
demonstration, but you may be able to also use IR, etc..  In this case you
could have the visible light for demonstration without it actually being used
for transmission.  The IR (appropriately modulated) could be used for
transmission without it being visible.  This would be much less sensitive to
ambient conditions.

Mark A. Corio
Rochester MicroSystems, Inc.
200 Buell Road, Suite 9
Rochester, NY  14624
Tel:  (716) 328-5850 --- Fax:  (716) 328-1144
http://www.frontiernet.net/~rmi/

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