This is a platform to attach your arduino in to make it compatible with Lego things, specifically Lego Mindstorms 4/23/12: Update: Cloud.Netfabbed the stl, if it wasn't working for you, it should now: Arduino_fixed.stl(NOTE: Has not been tested! May need to be slightly scaled.) 1.Print. 2.Place Arduino in the designated place. 3.Put a rubber band between the 7 and 8 ports, and the A0 and Vin ports to hold in place. 4.Attach to more Lego pieces. 5.(Not required)Upload picture and make a derivative if you changed something. Also, The design was based off of an Arduino R3 SMD edition.