Fabian Erblehner writes:

Made a DIY version of the revolights

total cost for one wheel is about 35 dollar

instead of a microcontroller i use simple reed magnet switches

the two outer rings consist of 18 Led’s in 6 groups each all is powered by two AA batteries they are located on the hub

the only thing i don’t have because i use the reed switches is the cool animation like revolights when the wheel stands still

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LED Bike Handlebar Pack – This pack contains supplies for making your own LED bicycle handlebars! This project is easily completed in a weekend and requires a small amount of soldering and some sewing, too.