first I will start out I have searched and what I found hasn't helped me. I apologize if I missed a thread. I appreciate all the help.

I am designing a PCBs for my ROV, I am using Arduino Nano for onboard and surface.
The ROV will have brushless 3 motors, servo, pressure sensor, compass, camera lights. I want to communicate with RS-422 with the tether, here is where I struggle not sure how to wire. Any help?

Thank you all


You will need an Arduino compatible RS-422 interface. One example