Homebuilt ROVs Forum

On the L293 shield, remove the jumper marked "PWR". The circuit diagram that I referred to shows that leaving this in will apply your motor supply (the terminal block next to the jumper) to the Arduino, thus destroying the Arduino. I used a 9 volt plugpack as supply. Double-check the polar...

Hi SSN626B and Rich. Good point about the seals, though I must say I've never used bilge pump cartridges, just brushless motors. Nick's code may well be very good, but for those who want to learn for themselves, and start with something more basic, I don't think it is too difficult to send 4 numbers...

Checked out your site. I like the look of those enclosures, and that 5 amp hour battery. Simpler than Li-Po. Make sure that the current rating of your motor drive board is up to running whatever pump motors you have. If not high enough, maybe use lower voltage supply to reduce the current, or use so...

"resident geniuses" dunno about that :lol: In summary, there are 2 converters: One type converts separate control and video data and sends that over the FO and converts back again at the other end. These are primarily used in CCTV applications, but ideal for ROVers. The cheaper sets, which...

Hi Rich. Just reading "N.C. Machinist" suggests to me that you have much in your favour for building an Arduino-based ROV. Motors: Personally i would say that brushless motors and controllers (ESCs) are the go, provided you have a lathe handy to make oil-filled pressure-compensated motor h...

Unless the hobbyist is an electrical or electronics engineer or technician possessing appropriate design expertise then mains power tethers are not practical. To be safe enough to use they would simply cost too much by the the time the safety mechanisms are designed, built, tested and implemented. D...

Hi Randy. I have run ESC and motor off a 12 volt lead-acid battery on the bench. No worries if the ESC is designed to handle the voltage. Motors and ESCs usually have the specs listed. Refer links. I do not like lead-acid for ROV because of the potential for explosive gas build-up inside a sealed hu...

Welcome johzac. Yes, what Jaman42 said, but streamlined ROV would be good in strong currents. Additionally, the "wet compartments" inside the streamlined shroud contribute mass to the vehicle. This means more inertia, and more power to overcome it, and sluggish control response. Filling th...

Welcome MadROVpilot. Your dive experience will be invaluable in your new venture, and to the forum as well.

If you think corrosion may be a problem then a small oil bladder will stop water getting in. http://www.homebuiltrovs.com/rovforum/viewtopic.php?f=16&t=879&p=7348&hilit=glove#p7348 Attaching the finger to the sensor could be a bit tricky. Maybe glue a small diameter tube onto the outside...