I tried printing the models on Thingiverse, but they wouldn't fit over the Neo's X axis cover. So I redesigned it so that it picked up with the M3 screws that hold the cover on.
I printed all parts with a 0.2mm layer height, supports required under the rod that connects the ball to the main body.
The balls should be just tight enough to fit in the arm and allow movement without being too loose.
Screw the Raspberry Pi camera - both V1.3 and V2.1 are supported - to the lid using M2 screws. Slide the lid into the camera body.
Update 23/07/05: I've redesigned the mount to incorporate the cover from Ender 3 V2 Neo X-axis Mounting Cup. All you need to do now is slide the mount over the end of the cover.
Update 23/08/06: I've added a left and right handed camera mount with chamfered edges and fillets at both ends of the shaft. There's also a lid for the V3 camera.
I've also added a base that can be stuck with double-sided tape on any other surface.
The author remixed this model.