mouse as dro

to whoever asked about using a mouse as a dro device, it is something
I have thought about
before now.

I think the basic mechanics are more useful than the whole unit
though.
at this page
http://www.worldaccessnet.com/~dstixrud/
you'll see how a chap used the encoders for dro purposes.

the code wheels them selves are not very high resolution, 200 to 400
dpi begin common, when all the mechanics are taken into account.
certainly there are not many slots in the wheel....

using a friction drive (no backlash, and provides mechanical
muliplication of resolution), I don't see any big reasons why one
should not use these mechanisms if you cannot afford anything else.
by using careful design to replace expensive encoders, I'm sure it can
be done.

steam and wind

--
David Forsyth DaForce A-T Iwr.Ru.Ac.Za
Keeper of the listserver for South African Railways fans _|_ His
Part time gricer, kiter, photographer, father etc etc | Way
http://www.ru.ac.za/departments/iwr/staff/daf/welcome.html | Up