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Build simple ROV - need some feeback


(Ole ) #1

Dear all,

had a few thoughts on how to build a simple ROV out of more or less standard material.

Before I hit the order buttons on ebay I was wondering if you could give me some feedback on my ideas.

Target is to have a ROV that can operate down to 20m depth. I want it to be RC controlled using a float on the water surface having the receiver and a 5.8 GHz transmitter for video (VTX). Onboard there should be a small camera with “livestream” to the VTX and finally to my video goggles. I am planning to maneuver using 3 brushless motors (2 in the rear, 1 on top). Battery will be on board. Pressure sensor, sonar and OSD can be added after a few successful trials an reaching the targeted depth. I believe electronics can be done, having some experience coming from quadcopters, adruino, …

What concerns me is the frame / body of the ROV. I am wondering if a plexiglas body will do it. Targeting to reduce volume as much as possible, I had the idea to use a 80mm/70mm (outer/inner diameter) tube with 10mm thick plexiglas disks glued to both ends. The main tube will be made out of two parts, the front part with 250mm and the rear part with 100mm length. I will put a “connector” tube inbetween, with 70mm/60mm and a length of 100mm. The picture below is showing the idea. My question is: will this withstand the pressure in 20m? Can a wide plastic tape around the intersection between the two parts be used to seal the body?

I appreciate your feedback!

Ole

https://drive.google.com/open?id=18z…5Tm56uK5Jb1dIQ


(TCIII) #2

@OM82,

Take a look at the OROV2.8 to get some ideas in relation to your project goals.

I have built one of these from scratch (no kit) and used BR M100 motors and two bladed propellers.

Regards,
TCIII AVD


(Ole ) #3

Hi TCIII,

thank you for the feedback - I like the general design of the OROV2.8. One question I have in regards to the sealing: Will the end caps be locked somehow so they stay in place? Or is water pressure taking care of that? I can only see there seems to be an o-ring around the body and the chassis forcing both end caps to stay in place, but would that be needed?

Thx and BR
Ole


(Jacob) #4

The water pressure is enough to keep the endcaps well in place (when they are at depth).