Hemispherical Rotating Gantry Camera Array

Please watch video below to see how it works.
A gantry shaped Camera array.
It has 4 cameras facing inside to capture images placed at the center.
With python code, this device takes pictures and rotate some degrees repeatedly.
Images can be used for photogrammetry software.

https://youtu.be/R4cIH1njWk0

To make this, in addition to uploaded parts, I used 2 of GWS S35 STD rotation servo motors, Raspberry PI 3B, 4 of Raspberry pi camera modules, IVMECH IVport and mobile batteries.