This Arduino Project looks really cool and well put-together:
With about $150 in materials, the Pimp-My-Bike course should provide you with:
-turning indicators & strobe night light
-speedometer / odometer
-brake lights
-battery pack
http://jdeboi.com/portfolio/electron...e/overview.php
Not terribly cheap, but then again, not that much more than a new Light and Motion Vis 360+...
Via: Lifehaker
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