I am new to this and it is my first ROV too.
I've been looking into making a tethered ROV, not very different from OpenROV.
An important difference is that I want to transfer power over the tether to be able to charge the battery while in operation.
I have posted the top-side schematic for now.
The tether will be 24 AWG pair and hopefully very long (400m).
I expect to push 3 amps of current over this tether.
The later rectified current will be used to trickle-charge a 5Ah 3S Li-Po powering the ROV.
Please comment if you think it can be improved.
I have several questions on my mind:
1. How do I generate a relatively safe AC voltage (what inverter to use).
2. How do I effectively transfer power over this tether?
3. Is it achievable to use Powerline over such distances (400m)?
I will later post the bottom-side schematic where the questions are more
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