Vinyl Records Digitizer Phono Preamp
With the Vinyl Digitizer Phono Preamp, you can “dub” records onto your computer and convert the sound files for your phone, MP3 player, car, or anywhere else you need music.
Hobby knife
Dodecahedron Speaker for Desktop 3D Printers
At normal listening distances, an array of twelve speakers arranged on the faces of a dodecahedron is a very good approximation of a point sound source, and the sound waves it produces are very close to perfectly spherical. A dodecahedron speaker can be a useful tool in acoustics research, and is definitely a fun toy […]
Fetch-O-Matic: Automatic Ball Launcher
Several years ago I watched a viral YouTube video that starred Jerry the Dachshund, whose engineer owner had built him his very own automated ball launcher. I had two dogs at the time, and was also unemployed with some time on my hands, so I decided to try my hand at building one. After a […]
MonoBox Powered Speaker
Learn how to build inexpensive powered speakers that amplify the output of your headphone music player. It may be small, but this speaker can still rock!
Covert Listening Book
Connect a shirt pocket “amplified listener” hearing aid with an in-car FM transmitter, and you’ve got a wireless bug. Tuck them inside a hollowed-out book with the mic concealed by the dust cover, and you’ve got a covert listening device that you can leave lying around or on a shelf near a surveillance target. Then […]
Folding-Wing Glider: Rockets Up … Glides Down!
This balsa wood glider catapults up with wings folded back, wings pop open and it gently glides down.
Luminch One
Luminch One is an interactive lamp controlled by the movements of your hand. Wave your hand over it to turn it on or off, or move your hand up or down above it to change its brightness. Inside the lamp, an Arduino hooked to an infrared distance sensor tracks your hand and sets the state […]
