Okay guys never done this before but Ive been really wanting to make my own that suits what I want. Could someone review my basic wiring diagram please? Ive followed the tuturial above, and still have a few questions for the smart ones. First off Im using a SLI-M from Leo. From what I can work out, I can use; 2 Rotary encoders with push buttons...http://www.leobodnar.com/products/BU0836X/ELMA-E37.pdf 8 Knitter buttons (2 buttons per connection) http://www.leobodnar.com/products/BU0836X/Knitter-MPS103F.pdf My summary; Theres basically 6 connections on the SLI-M board. So each Rotary encoder will take up 1 spot each. Which leaves four connections, that can have 2 buttons on each. Do the rotory encoders need their own button wired directly to them? Can I add any extra buttons without wiring a matrix? I dont want to wire a matrix, I dont want to make a science out of it..lol. Any help appreciated, thanks.