EmoScoobyDoo
Maybe I'll have something to say ... Probably not
You could use the pcb from the FC4 and an Undamned USB decoder to make a converter for ps4. Doing this would allow any usb controller to work (for ps2 pad you could plug it into a 360 adapter then the DIY one).
Example of a dual converter using the same things but also adding in an Xbox One PCB. http://testyourmight.com/threads/my-diy-dual-converter-and-my-hitboxes-stick.52865/
Example of a dual converter using the same things but also adding in an Xbox One PCB. http://testyourmight.com/threads/my-diy-dual-converter-and-my-hitboxes-stick.52865/