Hey I'm not sure if this is the right forum to post this in. But it's worth a shot.
I'm trying to mod a gamecube controller to work with a 2DS/3DS I've come across this website which has helped a lot but I don't speak Japanese and it's become quite hard to continue.
I wanted to see if anyone has done something like this or can point me in the right direction. It looks like this guy on the website has modded several 3DS' in different ways. So I believe it can be done.
http://imaginglabo.web.fc2.com/3DS-controller.html