A few years back I made this baby: http://www.amateurengineer.com/?p=400. While it was nice to wokl with it was very unflexible so I decided to dismantle the old parts and remakre its elements as stackable modules. So here you go. To see if you like I recomed printing a base_bottom with a length of 1 and one base_top.stl - its a prepared top to hold 10 banana-sockets for interconnect stuff. If you have any idaeas for new modules pls comment! Modules Arduino: Parts needed I used 4 Breadboards stuck together in the middle with 28 "fields" around them. ,My total dimensions are: 450x300 mm. I sinply used a base unitx4 to make drillsholes from the under side and little screws to fix the bottoms.