Katie Cordrey
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You may have seen pre-made programmable bike blades that can be attached to your bicycle wheels to make bright light patterns, but when some people at San Francisco’s Maker Faire got into the act with their persistence of vision displays, DIY knowledge was set loose! Electrical engineer Limor Fried, who goes by the screen name, “Ladyada,” put together kits and downloadable instructions so everyone can light their bikes. If you don’t need the kit, you can get free schematics, firmware and software from the Ladyada site. This is the same technology that some Obama supporters used to brighten up their bike wheel spokes during the presidential campaign. I’m not sure how the lights would hold up on single track, but I have a soldering iron so maybe I’ll make some and find out.  A SpokePOV is a 'stick' of LEDs with a magnetic (hall effect) sensor on the outer end. When a magnet passes by, the microcontroller takes note. By counting how long it takes between magnet passes, SpokePOV can tell how fast its rotating and quickly blink the LEDS to present an image. Therefore, no matter how fast you are riding, the image will show up correctly!
(ladyada.net)References: ladyada.net, blog.wired Filed In: |
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