Homebuilt ROVs Forum

I am actually going to run 48v from my tether into the meanwell before 48v is converted to 12v for thrusters. The meanwell is a step down so it will work ok.

Thanks,
Njs552

Thank you for the link. That is exactly what I was looking for, and I will get a couple of these for sure. They are very well priced too, and I can dim the led's! Just as a comparison I may set up and automated test with the step up converter and the meanwell and run them for a few weeks side by sid...

@ROVER3D I am sending 48vdc down my tether to the ROV. On board there are DC to DC converters that step down 48v to 12v. From there 12v is stepped up to 21v for the LED's. The reason I am using 21v LED's is because a 12v LED of the same price does not produce as many lumens as a higher voltage LED's...

Yes. That is it exactly.

Also, here is another update on the LED housings:


Will make another one this coming week as well and then I will test them in water in the next couple of weeks.

Thanks,
Njs552

Hi, Are you pressure compensating your bilge pumps with oil? If not likely they will leak at some point (maybe 30m? for these) and short the motor and melt the copper windings. I have seen this happen with more than one bilge pump. It might also be that the bearing is jamming the shaft, and it is no...

A 3" PVC Pipe will work just fine, but are you going to use a threaded end, press fit, or actually seal it with PVC cement? PVC seems to be the most popular choice among people on this forum, and it is pretty cheap and fairly easy to do. How are you going to pass wires through the pipe? Epoxy o...

Possible, maybe. Good idea, definitely not. It has been done, but I would not recommend it. Cat5e is unshielded, and even though it is twisted to eliminate interference, the twist ratio is optimized for ethernet communication. What is your main reason for not putting a Arduino in the ROV? Space or c...

I emailed him and he said by September. He also said the binary files he is working with are already in his GitHub, so if you download QT creator you could compile the latest "Beta" copy of the software yourself. Or he will release and .exe in a few weeks. I believe it will work with any I...

That looks perfect. One the topic of LiPo;s as a power source, you would be better off putting 6 or so 2000mAh 3S lipos in parallel in the ROV so you would basically get 12000mAh for somewhere around $50. It is cheaper to buy the 3S cells and use them in series or parallel than to use the 6S cells w...

OK. You will probably need more than one battery in series to supply enough current at a good voltage. If your typical ROV current draw at 12v is about 8A (not unreasonable as long as thrusters are power limited), then if you supplied 12.5v at the surface, and pulled 8A, your voltage at the ROV woul...