3D glasses for an SGI


[Mark Hoekstra] is a true SGI enthusiast, and he proves it with these 3D glasses for an SGI. Taking advantage of the SGI’s stereo viewport, [Hoekstra] created a controller for a pair of CrystalEyes glasses that would allow them to be used with the SGI.

[Hoekstra] used the schematic from [M.C.D. Roos]‘s similar project, which used old Asus 3D VR glasses. This project can theoretically be done with any LCD-shutter glasses, the only important thing to know is the maximum shutter voltage the glasses will take. [Hoekstra] felt his way through building the board by common sense alone and somehow managed to avoid any shorts. The board only makes three connections to the glasses: an out to the left lens, one to the right, and a ground wire. After building the controller board out of an LM324 chip and a customized segment of perf board, he learned that he needed a monitor capable of displaying a relatively high bit depth at 100Hz, or 50Hz per eye. He tested the glasses with a game called Hacknoid after making a few last minute changes on the board (forgot the ground fuse), and he was soon making himself dizzy with his functioning 3D glasses.

The backyard ogre catapult


Today we’ll be setting aside the circuits and solder for a little while in favor of good old fashioned wood and bungee chords to make this backyard catapult. Items needed include nine sections of 2×3 wooden beams of varying lengths, some screws and eye hooks, a bungee chord, a broom handle, and a few other things which are all detailed in the read link below.

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How to build an arctic web cam


This particular unit has been de-commissioned since 2005, but it’s still interesting. JACARA set up a webcam on Antarctica. They used an off the shelf Axis NetEye200 camera, mounted it inside a pair of hemispherical plastic domes along with a small electric heater and thermostat to keep the device from freezing.

Physical value of sound


The Royal College of Art in London recently hosted its annual graduate summer show, where postgrad students exhibit some of their artistic and musical projects. Among those featured this year were several vinyl record and turntable mods by [Yuri Suzuki].

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Nintendo DS homebrew music apps roundup


The fine folks at remaincalm.org, who brought you the wireless mcu controller dsmcu, have put together a list of 24 homebrew music apps for the Nintendo DS. We’ve mentioned programs like Protein[DS] before, but the list has others like this monome emulator. If you notice anything they’re missing, let them know and they’ll be sure to add it in.

[via Waxy]

Seattle Power Tool Race & Derby


Yesterday, the Hazard Factory, an industrial arts studio, hosted the 3rd annual Seattle Power Tool Race & Derby. Participants construct a dragster powered by at most two “power tools” to race head to head down a 60 foot plywood channel. The rules are fairly loose and creativity is encouraged just as much as performance. For an example build, [spacematters] posted his machine using a circular saw and inline skate wheels. A Flickr photo pool of the day’s shenanigans is coming together and you can see some of the registered entries on the Hazard Factory’s site.

[photo: Æther]

Twilight for Zune


[Mortiz Waldermeyer], the man who brought us the interactive LED pong table, has recently completed a project commissioned by Microsoft: an interactive chandelier that can receive and react to music from a Zune mp3 player. The technology behind this project which [Waldemeyer] calls Twilight is not all that complex: at the core of the chandelier is a Zune, which acts as the receiver for other Zunes in the area. The central chandelier Zune then feeds graphic equalizer display data to another device, which in turn feeds a microcontroller running the LEDs embedded in the chandelier. The chandelier itself is constructed of 15 sheets of organza fabric. The result is a rich, dancing display of lights that people in the room with a Zune can take turns controlling. The installation has just opened in LA.

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