Here are some links of interest I have come across to help you design or aid in the building process:
Hyperspin Frontend - http://hyperspin-fe.com/
Hyperspin Tutorial - http://www.youtube.com/watch?v=xnHEhe4lz1U
Maximus Frontend - http://maximusarcade.myshopify.com/
I-PAC Controller - http://www.ultimarc.com/ipac1.html
Suzo Happ - http://na.suzohapp.com/#&panel1-1
X-Arcade - http://www.xgaming.com
Hyperspin Frontend - http://hyperspin-fe.com/
Hyperspin Tutorial - http://www.youtube.com/watch?v=xnHEhe4lz1U
Maximus Frontend - http://maximusarcade.myshopify.com/
I-PAC Controller - http://www.ultimarc.com/ipac1.html
Suzo Happ - http://na.suzohapp.com/#&panel1-1
X-Arcade - http://www.xgaming.com