This is a camera gimbal for the SJ4000. I made it for my quadcopter but I guess it can have other uses as well. It uses two low cost servos, an SG90 for elevation and an MG90S metal geared servo for the roll axis. Other servos will of course work but may need modification of the mounting brackets to fit. Important: the Sketchup object is 10 times real size. If you use it to export an STL rather than using the one I provided make sure you scale down the STL after exporting it. (I always use this 10 times scaling to mitigate some bugs in Sketchup, and then scale down the STL afterwards) Print in 0.25mm layers. Some parts are laser cut acrylic but if you don;t have access to a laser cutter you could just as well 3d-print them