Agilent makes the internals for optical mice.
http://www.home.agilent.com/USeng/nav/-536893644.536905699/pd.html--- In
Homebrew_PCBs@yahoogroups.com, "mikegw20" <mikegw20@h...>
wrote:
> Thanks all for what turns out to be a lively dicussion. However,
as a
> follow on assuming that I have backlash compensation (by whatever
> means) Do you know of anyone using an optical mouse as a linear
> encoder? They way I figure it is indeed possible to communicate to
the
> ps/2 port and optical mice have resolutions in the 400lines/inch
(some
> much better).
>
> Has anyone used an optical mouse for postion sensing?
>
> Mike