I want to use the BlueROV2 as the chassis to carry a robotic payload. Before I buy, I need to be convinced without a shadow of doubt, that I can actually talk to my equipment on board, via the BlueROV2’s tether, and without disrupting the BlueROV’s normal functioning. I can do everything I need to do over a generic ethernet connection.
My question is simply: Does the tether provide a normal ethernet connection?
For example, what a “normal” ethernet connection means to me: I could add small ethernet switches on both ends of the tether. On the surface, plug your controller into the switch. And in the sub, plug the raspberry pi into the switch. Then, I could add my own gear on both ends. Would the BlueROV2 work normally in this scenario? And can I run my own network code in parallel, sharing the tether with the BlueROV2? (I don’t have a ton of data, so assume the contribution to network traffic would be low compared with the BlueROV’s video feed)
Finally, a “normal” ethernet cable would have unused wires. I saw images of the tether’s wires, and they look very much like normal ethernet to me. But can you confirm that? Which wires of the tether are actually used? Is there any reason I couldn’t do whatever I want with any unused wires? (In addition to the switching question above)