Hardware Connection of the Pan Tilt Zoom Raspberry Pi Camera
Arducam sell the Pan Tilt Zoon kit in components to cater to the different customization needs of the custmers, so you may need to assemble the kit before you can start using it. As long as you follow the diagram below, you can keep the system up and running even after swapping certain parts.
RPi PTZ Camera Controller Board dimension
The PTZ controller board is 36mm-by-36mm to fit the size of Arducam IMX219 and OV5647 camera boards with 18-22cm lens holder hole spacing. If you plan to use your own camera board with the PTZ kit, you may need to build an adapter board to assemble the kit. The following machnical drawing of the board dimension could be helpful to you.