First night tests and writeup. Please check all info with tester (multimeter) before connecting, I could be wrong

It uses standart UART 115200 to communicate to other Tilta devices. Both handunit and motor send exact same commands

|-----------------|
| TX   +   +  GND |
|          +  ??? |
| RX?  +   +  GND |
|-----------------|

|-----------------------|
| ---|----|----|------\ |
| ---|----|----|------/ |
| GND  TX   RX   4.2v   |
|-----------------------|

All commands are hex 15 chars long, starting with ":"

:96060002000161
:C90680000000B1

010601 - focus cmd

75 - ?

270D - focus value

4F - ? (checksum maybe)

:010601 75 270D 4F