Here’s a good idea: use an old SoundBlaster card and turn it into a cheesy-sounding General-MIDI box. If I were a porno film producer, I’d definitely need a couple of these for the soundtracks.

DIY general MIDI synth from an old Soundblaster [link & link][via]

This isn’t exactly a set of instructions, but anyone familiar with the Arduino should be able to make up something similar to this. With nice pads (think recycled mousepads) and some nice packaging, this could make up a great electronic drum set.

I’ll be exploring this in the next year as I’d really like to have a drum set at home, but lack the space and don’t want to spend much money on this. Plus, the ability to control a drum machine by playing “real” drums is more interesting (to me) than playing a “real” drum. I can’t get enough of that TR-808 bass drum.

DIY Arduino MIDI Drum Kit [link]