Shining bicycle turn signals

First, I publish this stuff for my friend K. He is a very young shy man and not good at English. I believe he is kind of creative maker. Although my English is just a little bit better than him, I will try to introduce his wonderful work to all of you.Second, this idea popped up when K was riding bi...

By: bigsistersister



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from Instructables: exploring - technology http://ift.tt/1DkwLKA