[fnordfnordfnord]

I'm afraid this project has been done many times by many people. SparkFun has even made a (now retired) kit. https://www.sparkfun.com/products/retired/287

http://rotocell.blogspot.com/#!

[StavrosK]

Oh no :P

I know other such conversions exist, I meant I only made one. I did it because it was fun, though, so I don't mind that there are others.

[fnordfnordfnord]

My mistake. I misunderstood the meaning of your other comments.