Who hasn’t dreamed about owning their own metal detector and searching for buried treasure, or at least a few dropped coins? In this project, we will build a metal detector based on a dual oscillator circuit. One oscillator is fixed, and the other varies depending upon the proximity of metal objects. The beat frequency between […]
Hack a $30, single-use camcorder to make it reusable, then launch it up in a model rocket and capture thrilling astronaut’s-view footage of high-speed neighborhood escape and re-entry.
By Norene Leddy with Ed Bringas and Johana Moscoso The Alarm Purse is a simple, fashionable way to add an audible alarm to your handbag. Tuck it away when you don’t need it (so it won’t go off by accident) and quickly hook it up when you do. The latest addition to the ongoing Aphrodite […]
The Luna Mod is an easy and fun instrument that will have you making great-sounding loops in no time. Rather than sampling input like a traditional loop station, the Luna Mod synthesizes its own sounds, and you play it using two knobs and one button.
Talk in secret over your own private laser beam link.
While reading through Charles Platt’s excellent book Make: Electronics, I came across this nice little circuit for making a gentle pulsing LED. I was struck by the “humanness” of the pulse, but couldn’t figure out what to do with it. Later I found a heart-shaped tag on some pants I had bought, and well, this […]
Whether you’re at a Bangkok hostel or backpacking in Goa, you can rock out to your favorite tunes with these portable Rock ’n’ Roll Speakers, a set of customizable, low-fi travel speakers that allow you to take your music everywhere. The speakers are driven by a simple power amplifier circuit and a tilt switch. With […]
