this is a complete modulare mount arm for all raspberry pi cases with gopro like mounts i add a clip-mount(thanks to caster) so that you can clip the camera every were on aluminium 20x20 rails like cr-10 or ender2 has...

Hint: the cam case is not my own design i modified some designs but i dind't remember the original owners.. so if someone recognizes his work please write me i will remark the remix..) the case on the photo is (https://www.thingiverse.com/thing:922740)<-- thanks to 0110-M-P