Do you want to make your own DIY drum module? I think it's fair to say eXaDrums is one of your best options. See for yourself:

Oh yeah, it is really working that well. I made a little board to play on my Roland TD4-KP, and here we are, the result is amazing, and feels like playing with a commercial drum module.

Still a few things to work on though... Here's a list:

• Error handling
• Make the mixer work in stereo
• Work with wav sound files
• Polish the user interface
• ...

Of course, I'll publish some schematics pretty soon, so that you can connect your electronic drums to your eXaDrums module.

Oh yeah, that's right, a longer video is coming soon. It will show more things, more features, more sounds, etc.