Potentiometer 5 or 6 detents

[Al Skierkiewicz]

There are pots that exist that have detents built in but there are generally used for volume controls (are log taper, 10K) and have 10-12 detent positions. A better solution is to pick up a six position switch at Radio Shack.
http://www.radioshack.com/search/ind...ar y%20switch

This switch is easily modified to become a twelve position switch by bending one of the stopper tabs out of the way and cutting one of the contact springs. Wire 9.1K ohm resistors from each terminal to the one next to it to form a series string. When you are done, you have a stepped 100K pot. Wire as you would any pot to an analog input on the OI and then set your programmers to work. RS has some nice shiny knobs as well. If you would like to see one in action, stop by our pit in Atlanta.