This is a modular mounting design. The mounting bracket attaches the Robo3D print bed and provides a mount point for any properly keyed mount plate. The dimensions for the key are provided in the attached drawings. The plate I've included is for an Aztech WIPC302 camera, but a new plate could easily be crafted for a smartphone or some other device. The mount bracket is slim enough that more than one may be used on a single edge of the print bed. (Please, Click the like button if you like it!) 8/16/15 - I just noticed a problem with the design you will want to look out for. It's pretty rediculous to have missed this early on, but for my Aztech camera, I realized that the extruder carriage is hitting the camera during the auto leveling step. It doesn't seem to have messed up the prints, but obviously this is undesirable. So, whichever mounting plate you use, just be sure that you check clearance. I'll make some design adjustments when I have time. I recommend using ABS. I've used PLA on similar mount brackets in the past and they easily broke under stress. Note that each part has a small cylindrical indentation on one face. This is the face that should be downward onto the print-bed. This will allow for strength in the appropriate stress points. The youtube video here shows the assembly concept: http://youtu.be/vxq9YyCEdes