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Dodecahedron Speaker for Desktop 3D Printers

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 is definitely a fun toy […]

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Joey #1 SMD Arduino Shield Kit

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 tools and the Arduino. Your […]

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Mini R.O.V. Submersible

Mini R.O.V. Submersible

This is a great, easy project! This project is also a first prize winner in the 2012 Instructables Robot Contest! This little submersible uses 3 DC motors and a nine-volt battery. It controls the three motors with three buttons. Its frame is built from lego-type pieces. It is very simple and great for beginners, although […]

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Mario Coin Block Lamp

Mario Coin Block Lamp

A few days ago, a friend told me that he saw a similar project on ThisIsWhyImBroke.com, and asked me to build one. Unfortunately, like my green lantern ring, I forgot to take a picture of the one I made for him so I built a simpler but less good-looking one of my own. This guide […]

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Wave JT – LED Chaser with Joule Thief

Wave JT – LED Chaser with Joule Thief

[youtube http://www.youtube.com/watch?v=fnDpiO5t0B8?wmode=opaque&w=560&h=315] [youtube http://www.youtube.com/watch?v=uUlkumlkryo?wmode=opaque&w=560&h=315] [youtube http://www.youtube.com/watch?v=HIFDbUfOWhU?wmode=opaque&w=560&h=315] I love LED chasers. A bunch of LEDs neatly turning on and off on a precise timing – lights running one way, then the other way… It’s relaxing, soothing, and hypnotic. There are so many LED chaser/scanner/sequencer circuits out there; some are made with discrete transistors, some based on […]

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