Hi there, i bought this encoder (Rotary Encoder - Illuminated (Red/Green) - COM-10596 - SparkFun Electronics) that have 7 pins. I'm following this tutorial to make it work with my Arduino Uno (http://www.circuitsathome.com/mcu/reading-rotary-encoder-on-arduino), but i'm confusing because the one on the guide have less pins than mine. Datasheet on sparkfun site is orrible :0! Can you tell me how to connect this to Arduino ? thanks a lot