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... Read more »

The 1933 FrankenCam

I’ve owned this 1933 Ensign Pocket 20 camera for 37 years and not taken one single solitary picture on it. Is it possible I could somehow repurpose it to take digital pictures? In this guide you will learn how to take an old bellows camera and turn the lens into... Read more »

Joey #1 SMD Arduino Shield Kit

Get your shades on … these SMDs are bright! Are you a beginner who wants to learn surface-mount soldering? This is the kit for you. Designed by young maker Joey Hudy, this kit is easy and straightforward to build. The LEDs are individually addressable, and everything is included except soldering... Read more »

Vinyl Cut PCB Resist

Here’s an easy technique to create a decent quality circuit board. You can design your own circuit traces, or you can find existing artwork of proven designs. There lots of ways to etch a circuit board, but all of them create a path for the electricity by preserving and removing... Read more »

Lumia Lunchbox Laser

Back in the 1970s, my friend Wayne Gillis and I used to do light shows at science fiction conventions. We had the usual panoply of overhead, slide, and custom-made projectors, and a single, very expensive, helium-neon laser from Edmund Scientific. Calling ourselves Light Opera, and later, Illuminatus, we performed at... Read more »

9-Watt MR16 LED Lamp

I have a range of new LED lighting kits and parts available. I have designed street lights / down lights / pool lights / commercial lighting kits as well. Keep a lookout as I will be bringing out more LED lighting kits from my design range. Now you can build... Read more »