Introduction: Turn Me Kit: Rotary Encoder to Breadboard Access
Rotary encoders are devices that can convey the position and direction of rotation through the use of two output channels, A and B. So we’ve made a breakout board that is both breadboard friendly and super easy to put together!
You can find it here: https://www.tindie.com/stores/tymkrs/
And more information here: http://www.youtube.com/watch?v=a_QP4xNXmO4