I used the board of my snesP V1. For this snesp one thing was important, doing a snesp as small as possible and simple to make, that's why i used the complete board of the snes control paddle, a little screen simple to use, an audio amp of iphone, all of this things was simple to wired. The main idea was simple simple simple ^^. Other thing, i wanted to use a couple of batteries that i can changed easily, it's works well with this couple of cells 18650.