Homebuilt ROVs Forum

Hi, I am using pvc floats from fishing store to keep my tether as netral as possible. http://shop.kivikangas.fi/PublishedService?file=page&pageID=9&itemcode=PVC75 (Page in finnish, 60g is amount of lift). It seems that one buoy keeps quite a long piece (2.6 meters) of tether on surface. What...

Hi! I will use UK D8 divelight casing to house my ROV's camera. This casing is quite big, almost 1 liter in volume so i have plenty of space even as the camera battery goes inside as well. Do you have any ideas how to use this waterproof space? Video is transferred via Cat5 so I have spare wires com...

Thanks guys! Need to update my knowledge on basic electronics! Tether mobility and drag seems both to be issues that cannot be escaped. Some thoughts.. Tether is affected by its physical charachterics (buoyancy, thickenss, stiffness) but also the skill of rov operator and (if there is one) the cable...

I was wondering.. When I got the thruster running in a waterbucket, I got 6 volts in multimeter. When propeller got detatched I got 15V motor still running (30 meter 24awg cable). Is it so, that if I used 12V battery with thick and very short cable, I would see full 12V in my multimeter when submerg...

Hi! Very intresting project! With some minor cave diving training and experience some thoughs came in my mind: As a cave diver you know this stuff already, but anyway: I think that there is very good possibility to get entagnled, if the cave is not straight tube since the tether will be pushed again...

Hi guys! I did some experiments with my thrusters. I used 350 gph thruster with 4,5cm prop in water bucket, powered by 25V lipo battery over 30 meter Cat5 (single wires). The voltage drop was as expected, thruster got only 6 volts. If i use thicker cables (i have 4 thrusters), and get.. lets say ful...

Hi guys!
Nice to hear you've visited/currently in the country!

See you in forum!

-J

Hi guys! First of all, thanks for owner and all DIY ROV community for this great forum! I've learned a lot, and i have come up with ideas of my desing. I am using PVC frame system, like many others here, see photo. Camera will propably be small parking camera, with good resolution and small size, ma...

Hello everyone! Nice conversation about things that are involved! Thanks! It seems.. pretty complicated :) Would it be "dumb proof" to: -Use one cable from thusters to battery A -2 separate cables (picture & power) from camera. -Camera power is conneced to battery B. Have a nice day ev...

Hi! I am planning to install camera into divetorch casing. Can i connect rca video and camerapower to same ethernet cable using baluns? Can somebody recommend appropriate baluns, since i am not familiar with these systems? I am planning to use one cable for thrusters and attaching that to image&...