HeavenEverywhere DrumHead Open-Source Hardware Project Page
Overview
The HeavenEverywhere DrumHead is a
1-piece E-drum trigger processor and high-quality PC-based sample player. It
can be used with any MIDI drum sampler such as BFD, Addictive Drums,
EZDrummer, etc.
The DrumHead system is based on the MegaDrum trigger processor (http://www.megadrum.info)
and a standard Intel PC motherboard. The system uses off-the-shelf
components and DIY kits; anyone who can solder and follow instructions can
make their own, or it can be ordered assembled and tested from
HeavenEverywhere. There’s no complicated electronics involved, just simple
hardware metal-work and making several cable harnesses.
This document is accompanied by a ZIP file on this web site
(http://HeavenEverywhere.com/DrumHead) that has full-resolution versions
of all the photographs, actual-size templates for the holes that need to
be drilled, front/ rear template files and wiring lists.
Down-loads 
PDF
document describing the system and its construction
ZIP file
of templates, parts lists and hi-res photos
