DIY Underwater ROV

This ROV is controlled by a Basic Stamp2 and is fully controlled via StampPlot. This allows for a GUI interface and feedback from the sensors while you are exploring the vast depths of the local lakes.
Initially I had hoped to have an un-tethered ROV. I tried to transmit data using Bluetooth from a laptop to the ROV underwater but as soon as it went under the surface all communication stopped. I also tried data communication using two radio transceivers operating at 438Mhz but got the same result.
Build your own ROV - Link
Related:

Making an PVC ROV Sub - Link.

DIY Underwater ROV Project - Link.
Posted by Marc de Vinck |
Feb 21, 2008 03:00 AM
DIY Projects |
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Comments
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| Posted by: zdeubeu on February 21, 2008 at 4:33 AM |
You can't use HF signals in water unless they are very low in frequency. Submarines use signals in the 15kHz range. Hard to do.
Otherwise, you can use sound: ultrasound transducers should work well.
73 !
| Posted by: Richard on February 21, 2008 at 5:55 AM |
Nice project! I really liked the videos. I also like the way you used StampPlot for the surface side interface. I will have to try something similar with mine.
One question -- what did you use for speed control on the thrusters?
| Posted by: haagmm on February 21, 2008 at 7:03 AM |
zdeubeu true, i saw a presentation on low cost Acoustic Modem technology based on DIY work with fish finders.
http://wuwnet.engr.uconn.edu/papers/p071-benson.pdf is the paper.
| Posted by: Craig on February 22, 2008 at 9:21 PM |
The one model has submersable sump pumps that are waterproof, the other looks like the motors are geting full contact with water, which is so-so iffy workable in fresh water, useless in salt water. I am working on one that has long motorshaft motors in a PVC housing that goes through a few snug & teflon lubricated o-rings. The other end of the PVC housings has a watertight large o-ring threadded cap. Rubber compression fittings for insulated wire allow control cable inside watertight.
Even expensive learning center aquarium ROVs have no speed controllers, just full thrust fwd/rev. You learn to feather the controls with a good pilot's touch. It's nice that you can find 12V color & sound cameras for under $100 lately, JUST over $100 with a 5" monitor.
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