GoPro gravity gimbal

I needed a solution for keeping the cam moreor less steady while mounted on a boat.
The gimbal solutions without motors that I could find either used counterweights or caused the mechanics to get in the shot when using the wide lens.
So I decided to go upside down and to use gravity directly ;)
Works reasonably well on a selfie stick as well if you mount it so the it hangs vertically from your stick - or just two of the ball gimbal systems ;)

How does it work?
There is a fancy sphere and two clamps, one with the screw block and the 2 prongs you fins on your camera to match.
The clamps fit into groves on the ball and through that are kept centered.
Movement is about 40° in all directions but no rotation like when using a full sphere.
Check my 4-axis ball mount if you want to add rotation to the mix, same ball size.
https://www.thingiverse.com/thing:4628982

There might be some additions coming depending on the feedback and long term use.
If you want to stay posted or make