No content found

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... Read more »

3D Movies and Photos on a Shoestring


3D video camcorders and displays are getting cheaper, but they’re still fairly expensive, and the only sub-$100 cameras that take 3D still photos all use roll film. So I thought it would be fun to mix the old with the new and see how cheaply I could build a digital... Read more »

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... Read more »

Thumb Piano


The thumb piano, known as a kalimba, mbira, and by many other names, is a lamellaphone that uses prongs called tongues, keys, or tines that you pluck to generate acoustic vibrations. The length of the tine determines the pitch. Generally, the thumb piano uses some kind of mechanism as an... Read more »

Air Guitar Hero


By Robert Armiger and Carol Reiley We created Air Guitar Hero as a fun rehabilitation exercise for people with amputations. Here we’ll show you how to make an inexpensive version so anyone can play Guitar Hero without pushing buttons. It uses an electrode cuff, a modified Wii guitar controller, and... Read more »

Magic Mirror Costume


This is the follow up to my Chomping Pacman Costume There are plenty of resources out there for creating magic mirrors, but I wanted to take things one step further. Everything that found was for an installation, and I wanted to find a way to make it into a wearable... Read more »

Non-Pesticide Patio Pest Control Device

  • By
  • 12/18/2012 @ 10:45 pm

How to fabricate, out of mostly recycled materials, an ultraviolet nighttime bug trap, since ultraviolet light attracts most insects. Tired of nighttime critters and drowning in bug spray? Try this blacklight device to control mosquitoes and other nighttime insects. Read more »