Hi. I built a ROV a couple years back, and am looking to evolve it to have onboard batteries, longer/lighter tether, and better sensors. You can see my old build here: https://sites.google.com/site/buildingarov/ (with a video of a dive in Monterey Bay here: https://vimeo.com/13742878
In looking over the OpenROV option and thinking about how to customize it to my style, I'm confused about why the OpenROV microcontroller is needed. That is, why can't the Beaglebone black take the video signal and also send the information to the servos. (with some limited electronic circuits for voltage conversion, etc.)
Likewise, I'll likely use the beaglebone black on the surface unit. I prefer this to having a laptop in an aquatic environment.
Here is my current planned schematic:
I'd love to get any feedback/thoughts on all this.