Wyatt Olsen built an incredible electronic drum set that that is fully portable and customizable.
Looking to get back to playing drums, Wyatt decided to create Dum Master, an electronic drum set. The first rev was functional but had a few problems such as difficulty in getting accurate velocity sensing and the need for a separate computer to play the sounds. Notable improvements with Rev 2 of the project include using peak detection hardware and using a Teensy with an Audio Shield for playback.
Additional details can be found on the Drum Master website.
Code for the project has been published on GitHub.