DYS 3-Axis SMART Gopro Brushless Gimbal:

http://www.getfpv.com/electronics/brushless-gimbals/dys-3-axis-smart-gopro-brushless-gimbal.html

http://www.hobbyking.com/hobbyking/store/__52136__DYS_Smart3_3_Axis_GoPro_Gimbal_with_AlexMos_Control_Board_BaseCam_.html

3D Parts:

http://www.thingiverse.com/thing:754849