Original post by: OpenROV (Sofar) ,
Hello Chris, If you have an OpenROV v2.8 it is pre-wired to accept an external servo. You can see the diagram in the electrical schematics (page 2). https://github.com/OpenROV/openrov-electronics/blob/master/OpenROV%20Controller%202.8%20Final%20Data%20Pkg/OpenROV%20Controller%202.8%20Schematic.pdf It is servo4. If you have additional questions about this I would like to direct you to the [https://forum.openrov.com/|forum]. -Brian G.