You could look at the optical disks and counting modules made by US digital.
They are available for many different shaft diameters and with a range of
count resolutions.

www.usdigital.com


Alan



>Hello to all,
>
>I'm interested in a device that can be used to count revolutions of a slow
>turning shaft, 10 turns/minute,  with 1 or 2 degree resolution.  I will then
>use a Pic to read and limit the number of turns and fractional parts of a
>turn.  Good resolution is important. Any ideas appreciated.
>
>                                                Rod
>
>--
>http://www.piclist.com hint: The PICList is archived three different
>ways.  See http://www.piclist.com/#archives for details.
>
>

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.