Measuring RPM''s at relatively slow speeds.

Archiver

Thanks for all the replies about the joystick switch. They were
excellent. Thanks for those that took the time to search for me.


New question:

I've seen you guys talk about measuring the rotations of a shaft before,
but never thought I would need to do it, so I didn't pay much
attention. But guess what, I need to [noparse]:)[/noparse]

My application would be less than 100 RPM, but accuracy would be important.

I did manage to find some info on magnets on a shaft, but being I need
accuracy at low RPM's that doesn't seem to fit my need.

I'm sure its some sort of sensor that reads though holes or something
(sorry for sounding stupid, but you know what I mean). I can make the
'disk' part of it at work, with any configuration I need, but what is the
'eye' part? Give me a shove, and I'll go do the searching.

Thanks in advance,

-John