On 26/07/11 23:47, Bob Blick wrote:
> Does anyone have experience with optical mouse ICs that can make any
> recommendations. I'm thinking about an application that is not a mouse.
> I would prefer not to use a USB interface to it either. It would need to
> be a part that is available without having to buy mice, such as the
> Avago ADNS parts. I would be adding my own optics to increase the
> operating distance a bit, sacrificing resolution is not a problem.
>=20
> Just looking for any advice from someone who has played with them,
> before I buy a handful and start experimenting with them myself.
>=20
> Thanks,
>=20
> But
>=20

I've played with one of these: http://www.sparkfun.com/products/10105
(before SF came along with a nice breakout unfortunately). I was
implementing a finger tracking sensor, which apparently is now a popular
technique with the likes of Blackberry and Nokia business phones. I
found that it worked okay though I had no way of making proper optics
for it so the focal point was never in the right spot.

In fact Mouser stocks a system for optical finger navigation from Avago
that may be fairly straightforward to apply to your system. The chip
includes an IR illumination source. It does have an annoying QFN
package, however. http://uk.mouser.com/avagoadbs/

Hope this helps,
Brendan
--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.