USB Rotary Channel Changer

rotary switch

Kentaro Fukuchi originally built this simple controller for an art installation. He needed an easy way for visitors to switch effects on an EffecTV system. To avoid writing device drivers he canabilized a cheap game pad. There were 16 available buttons but only 12 were needed. Once the rotary switch was wired to all of the buttons he could use simple scripting to grab the button press events. You could use this to control a variety of things and Kentaro gives a couple possible ideas on his site.

[thanks Jaime Wong]

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CueCat Hacking

cuecat

The CueCat will always hold a place in hardware hacking history. Actually, anything that makes C&D letters start the to fly will guarantee memory. The CueCat is a simple barcode scanner that was a magazine throw-in. Most people got their’s from Wired, but you could get them from Radio Shack for free. The idea was to scan barcodes embedded in magazine ads and the included software would take you directly to the related website. The problem was that each of these devices transmitted its unique serial number to the software so the parent company could track what you were interested in. Well techies weren’t having any of that and soon began stripping off the serial number. The device also didn’t work as a regular barcode scanner because of some built-in obfuscation. People were able to change the device to read regular UPC codes and then cataloging software was developed so you could keep track of your movies, books, and CDs. Needless to say the company was not happy with this development. Here is one site’s story.

[carpespasm] had sent this in last week and I had brushed it off thinking “yeah I’ve seen it before, and it is interesting, but the old specialized hardware gives it limited appeal”. In a bit of zen BoingBoing recently posted about a liquidator selling two million of these things. You don’t have to buy that many though. I bumped over to eBay and found that for a couple of bucks you can get one of these. So, if you’re curious the hardware is out there.

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Quadrature Optical Encoder Built From A Mouse

mouse salvage

Everyone has at least one extra mouse laying around; why not get some use out of it? Disassembling the mouse you can get two optical encoders plus four infrared emitter/detector pairs. Then you can reassemble your new sensors into a quadrature incremental optical encoder. You’ll be able to tell how much the sensor has rotated and by comparing the signals from the two IR pairs you can also determine the direction. These cheap devices would be good for keeping track of robot wheel movements or doing absolute positioning telescopes.

[thanks joelanders]

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Dot Matrix Synth

dot matrix synth

This project initially started as an attempt to build a Mellotron, a tape based sampling synth. Paul Slocum recorded samples using a tape recorder and then taped the segments to the printer’s feed drum. The samples were then played back by varying drum speed and read head location. Later versions of the printer synth used a hacked EPROM and generated sound using the noise of the firing print head. The site features plenty of sound samples which are slightly more pleasant than my parent’s Panasonic “quiet” series dot-matrix printer.

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Ambient Traffic Light

traffic lighttraffic light

Seems reader [Bucky] is just as annoyed with those ambient orbs as we are. I fully support unique ways to present information, but this executive toy stuff is nothing to look forward to. Bucky legally acquired a traffic light and then developed a parallel interface to the traffic light to display different types of information. This project does require switching 120 volt AC, so you should make sure your comfortable with electrocuting yourself before proceeding. I hope someday lots of extra interfaces show up.  Until then I guess we’ve got people like Bucky to keep us sane.

P.S. Don’t forget to give us feedback on the hackaday podcast.

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Remote Controlled Orb

poplight
Check out this wet and wild spring break story. Actually, Nate True spent his break hacking a tap light to make it emulate an Ambient Orb. It is wireless and you have full control over the color. You could have it indicate almost anything: new mail, rss feed activity, cpu temperature.  It isn’t a perfect copy of the orb: it is $100 dollars cheaper and you don’t have to pay any monthly fees. I guess that just means you’ll have more money left over to throw at other executoys, or you could save it and take a real trip next year.

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Tv-b-gone Now B A Cellphone

TV B GONE CELL

Allright, we all should know about the handy device that came out awhile back called tv-b-gone and how it shuts off tv’s by holding down a button. problem is, it’s pretty easy to spot if you’re an awesome best buy security guard wearing that coveted yellow shirt, so you’re risking revealing yourself somewhat by using it. however, if you were to say, disguise it completely as a cellphone by totally redoing the whole thing, then you may be able to casually stroll by those TVs while “chatting on the cellie” and get out alive.

by alive we mean casually strolling out of best buy or an electronics store. very impressive idea here.

thanks [AJ]

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