Make automated and programmable musical instruments…
Diy.sometemple writes “This is an extensive collection of automated and programmable musical instruments designed by the logos foundation. There are lots of photos and wiring schematics and the like. You can get lost on this site for hours.” Link.

“The Musical Instrument Makers Forum, an interactive forum for the discussion of musical instrument construction, design and repair – Acoustic guitar building, electric guitar making, archtop guitar building, violin making, dulcimer making, mandolin building, banjo building, or any other type of lutherie; pickup winding and rewinding; drum making; flute and recorder making and repair; brass instrument building and repair; and more. For makers of all instruments at any skill level from expert to wannabe.” Thanks Dave!
In MAKE 04 we have a great article on
“In today’s hectic and noisy world, we are all searching for a little peace and quiet. Well, you might not be able to slip off to a tranquil forest for an hour or two, but you can block out background noise with the Noise-Canceling Headphones. The theory behind this project is that by picking up ambient sound with a microphone and reproducing it out of phase, we can actively cancel or “null” out background noise. In fact, several commercially available devices perform the same function. However, by building your own headset, you can add features not otherwise available and have fun while doing it!” Thanks Nyte!
RPS writes “Low tech how-to on making sound insulating earphones for listening to music while drumming, operating machinery (or doing anything else in a loud enviro) using cheap ear protectors and headphones.”