I'm working on something very similar. I'm making a 3D-printable LEGO-Technic compatible version called "Bitbeam". http://bitbeam.org/arduino-mounting-plate htt

I'm working on something very similar. I'm making a 3D-printable LEGO-Technic compatible version called "Bitbeam". http://bitbeam.org/arduino-mounting-plate http://bitbeam.org/arduino-mounting-plate I started the Bitbeam project because I was prototyping some things in LEGO, but when it came time to figure out how to make many of them, I wasn't too excited about the cost of LEGO... but I was happy with my LEGO design. So I decided to port LEGO dimensions to materials that are easier and cheapier to source myself.