This is a complete spinner to use with an arcade cabinet. I use this with Mame. Even if there are other design. I had to develop it by zero. What you need.

N°1 Leonardo Micro ATmega32U4 16MHz 5V Replace ATmega328 Arduino Mini Stock TE463 http://www.ebay.it/itm/322097722501?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

N°1 Incrementale Ottica Codificatore a Rotazione 400 Impulsi / REV Rotary Encoder http://www.ebay.it/itm/181881354349?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

N°3 m3x10

N°1 m2x12 with nut

Print the knob

Print the flange

Put this piece of code in arduino micro:

#include