One thing you'll find out quickly enough - get the brightest LED you can
find and drive it hard. You need to drown out ambient light. Plus, the
more light you have, the faster and more accurate your detection will
be.

If you use an RGB LED you can sequence and scan color :)

Best regards,

Bob


On Tue, Oct 23, 2012, at 03:56 PM, IVP wrote:
> > I've used fiber optic cable for that exact purpose
>=20
> Sounds interesting. I've got a short length of the plastic type, I
> think it's 1mm inside a black sheath. Probably too thick
>=20
> But we do have this fibre optic table lamp with lots of fine
> strands, and no one's around ...... tiptoe tiptoe .... snip
>=20
> Thanks
>=20
> Joe
>=20
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