Gear tooth sensors - Forward or backward?

[Chris_Elston]

We used two Grayhill 61K128 encoders on the gear box...well trying too...

Also you might be able to do what your doing. So you have an oscilloscope? Connect your output to your scope and check th PULSE width. I think if I remember right, the gear tooth has two different pulse widths. If it does, you might be able to write something with EasyC Pro's new "interrupt watcher" function to get what you need for direction from gear tooth sensing. OR...this will take some HELP from mechanical gurus...you might be able to mount TWO gear tooth sensors out of phase from each other and do the same thing.

Just some suggestions....

encoders work ok for us for counting distance for sure, we are having issues closing a PID around them and our transmissions. So I don't know what your application is.