Homebuilt ROVs Forum

njs552 wrote:Hi tcholas,

Cat6e would work, but I know it will not be as flexible as Cat5e, and unless you need a cable rated for a 10 gig connection, then I think it will be way overkill. Any reason for cat6e?
Yes, cat5e it is really the best option!

The DC to DC converters convert 48v to 12v @ 10A. This allows the use of thinner wire in the tether, and can supply more power to the ROV. That motor driver serves a different funtion, and would run from the 12v supply from the DC to DC converter.
Then you need a converter at the output of the battery to raise the voltage to 48V and another drive at the entrance of Arduino Pro Mini to lower it again to 12V?
I think a problem I would have would be with the ESC I'm using (that of the previous link), the maximum voltage that it supports the input is 43V. What would you recommend?

For the relay, I was operating around 21v at about .5A. That relay you provided a link to is not exactly meant for this purpose as that is more to control AC power, like turing on/off lights in a house, but it just might still work - I dont know. I used dual SSR relays specifically because they are high current, and are smaller in physical size than other relays. http://www.phidgets.com/products.php?product_id=3053
I will search about the relay later!

Thanks again, Vinicius

Thanks,
Nick