By the way, if you somehow interested to fit this controller to other existing open hardware, you may use 3.5mm TRS jack for S.Bus connection. There are plenty of Micro camera users who use these Expansion Boxes.
S.Bus +5V power (tip) [BLUE]
S.Bus signal (ring) [GREEN]
S.Bus ground (sleeve) [WHITE]
Genlock, or +5V power from LANC (tip) [BLUE]
S.Bus signal (ring) [GREEN]
Genlock/S.Bus ground (sleeve) [WHITE]
There are also few other popular controllers that use 3.5mm jack but they use 4 pole TRRS jack and don't follow the same pinout. This makes things not compatible without additional cable adapter or modification: