M12 lens mount for PS3Eye camera hacking

This is a fully functional M12 lens mount for PS3Eye cameras.

The [PS3Eye camera](http://www.amazon.com/Sony-PlayStation-Camera-Bulk-Packaging-Pc/dp/B0072I2240/ref=sr_1_2?ie=UTF8&qid=1367711281&sr=8-2&keywords=ps3eye) has become very popular in the [multi-touch community](http://nuigroup.com) for it's fast framerate, low-cost and high hackability. Any time you want need a decent, cheap infrared camera for computer-vision projects, the PS3Eye is a good place to start! For example, I'm using it for eye-tracking in my [Eyewriter 2.1 project](http://jason-webb.info/wiki/index.php?title=Eyewriter_2.1), and a pair of them are at the heart of the fancy new [Duo finger-tracking system](http://duo3d.com/)!

For a long time, if you wanted to hack a PS3Eye camera you needed to buy all of the parts from suppliers on the web, which gets expensive and tedious pretty quickly.

You still have to buy lenses and filters, but you can save yourself a little bit of cash by printing your own M12 len