Phillips

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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Building a Doodle Bot Kit

The Doodle Bot is a simple robot kit for beginners that can draw pictures and write text messages with a pen. [youtube http://www.youtube.com/watch?v=jmq3s2o9vkE?wmode=opaque&w=560&h=315] Sample code allows the robot to write messages created by the user. The size of the writing can be changed. The Robot is programmed using the Arduino IDE and a USB cable. […]

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A Shook-Up Mouse

After seeing one of those pens that shocks you, I thought about putting something like that into a mouse as a joke. But mixing computers and high voltage is not such a good idea. The idea of using a vibrating motor from an old pager came to mind. So with an old pager, a mouse […]

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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 ConFusion conventions in Ann Arbor, […]

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X10 Macro Module

One of the most powerful additions to an X10 system is macro capability, where a computer continuously monitors the powerline for trigger signals, and responds by executing a timed sequence of additional X10 commands.

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