You’ve been working hard at your Arduino-based servo project, and so far it’s working great. Time to untether it from your computer and let it run on its own, right? It works fine on USB power. It works fine on a 9-volt battery (while it lasts). You plug it into an adapter and…twitch…twitch…twitch. Suddenly it’s […]
In this guide you will learn to created an array of LEDs that visually represent the volume picked up by an electret microphone. You will learn how to wire 3 different circuits which are the LED array (which is really many individual circuits), the microphone, and a button which can be used to change the display mode […]
Add bright lighting to your space with powerful LEDs housed in PVC.
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 […]
Snap aerial photos from 300′ up by suspending a hacked camera from 3 helium balloons.
This autonomous instrument uses Solarengine circuits and chimes.
Explore the fine art of making Frankenmice.
