After spending way too much time smashing on my drums in Rock Band, I wanted to play some of my own music. I sold my real drum kit many years ago, and I'd been regretting more and more. So I designed a simple GUI, hooked up the USB signals, and connected some drum sounds I found. What I got was a simple way to play something like an electronic drum kit.
Read the blog post I wrote about it when I actually wrote it: http://y4kstudios.com/post/ps3-rock-band-drums/