Lots of projects require resistors of specific values or particular tapers. With SparkFun’s Rotary Switch Potentiometer Breakout it’s easy to create a rotary switch that enables whatever resistance values you need. When you’re done building your board, you’ll have a 10-step potentiometer.
Each Rotary Switch Potentiometer Breakout has nine spots on the board for resistors, which should be bent so that the stand up on the board. The opposite side of the PCB has three pins to attach leads or a connector which include, CCW (Counterclockwise end of resistor string), W (Wiper), and CW (Clockwise end of resistor string).
You can buy the breakout online from Sparkfun, for $1.95. Note that you’ll also want to purchase a 10-position rotary switch and your desired resistors to complete your switch.