Step 8: Adding Encoders!   Parts used: (* 17 pcs Alps 12mm encoders (with push-button function) http://www.reichelt.de/Rotary-Pulse-Encoder/STEC12E08/3//index.html?ACTION=3&GROUPID=3714&ARTICLE=73923&SHOW=1&OFFSET=16 These 12mm encoders are not recommended anymore, especially, when used with a STM32F4 based core. They have a different pinout, and whi