If you’ve ever struggled to use a solderless breadboard with an Arduino, you understand how frustrating it can be! The Boarduino clone acts just like an Arduino, and works with the latest Arduino software. For many projects it can even be preferable!
This circuit is commonly credited to Japanese multimedia artist Tetsuo Kogawa. It takes audio input through a 1/4″ phono jack and, constructed as shown, without the optional antenna connections, will broadcast an FM radio signal about 30 feet. This is the standard model of Mr. Kogawa’s simplest FM transmitter, which is slightly more complex than […]
By Sean M. Montgomery and Ira M. Laefsky Excerpted from a Primer on Biosensing in MAKE Volume 26. When you experience an arousing stimulus, like an evocative question, a startling noise, or even a disturbing thought, your body generates a variety of psychophysical responses. One of these is micro-pulses of sweat released after a 1- […]
We have all used something like these battery-operated stick-up lights for closets and dark places. And we forget about them. Note: You should check all of your battery-powered devices at least once a year. When batteries leak they can damage everything and rust metal contacts. Most of the older stick-up lights use light bulbs, not […]
It’s rare to get very low temperatures where I live, but last winter the temperature was low enough to freeze and burst pipes. After thawing my pipes, I needed outdoor faucet covers fast, but the hardware store was sold out. With an empty drink mix container as the base, I was able to make comparable […]
This project by Collin uses a familiar schematic — the light-sensitive oscillator (aka “phototheremin”) as originally described in Forrest Mims’ book Timer, Op Amp and Optoelectronic Circuits & Projects. Once he got the hang of securing each part in place for soldering, the rest of the process was more or less straightforward, and the circuit […]
Long before the dawn of digital music, folks employed the power of the electric color organ (aka “light organ”) to add some synced visuals to their hi-fi experience. Schematics for building such a beast based on AC power and incandescent bulbs can be be found fairly easily on the web, but plans for comparable LED-based […]
