
antguru
USA
Asked
— Edited
Well a friend asked if we could eliminate his thick control cable running from his boat to his ROV submarine by using EZ-B. My first thought was all but the two power wires. However this will require that the bluetooth link and camera links be coupled over the 12 volt DC power wires about a 100 feet in water. Any body have any ideas on how to do this? Thanks Neil
I don't think the EZ-Camera will work that long distance, maybe you'll find another wireless camera that suits your needs.
Good luck
http://www.homebuiltrovs.com/stinger.html
http://www.techidiots.net/project-pages/wrt54gs-poe-12v-mod
I would definitely do some research on this before too much $$ investment. There is a reason submarines have to come to the surface, or para-scope depth to get radio communications...Various frequencies are going to behave completely different as well (submarines will string long wire antennas too). 100 feet is a long way for RF propagation in water. I have been doing shipboard radio comms for over 20 years in the US Coast Guard. While my experience is on top of the water...under the water is even more challenging.
Good luck...looking forward to hearing about what you might find.
v/r
Kevin
an xbee setup would work. I have a Zbee XSC 900 setup on my bot and it has superb range through several brick walls.
http://www.ez-robot.com/Community/Forum/posts.aspx?threadId=781
only that does is a ultrasonic circuit,this is a international company that made a design
i am looking at making ,since i belong to a ROV club ,and ultrasonics i use alot at work with my designs and company design,few companies do make underwater ultrasonic transducer high power and higher frequency
i did buy awhile back ultrasonic transducer only for $50 each receiver and transmitter
circuit i have ideas for ,and equipment not a problem so many at home
time is the problem,i do have ROV MADE ,so when i have time looking to build the design if works great looking to get a patent for it
sound is mostly the only thing that works underwater
DJ
that is what i had on mine POV cable,and there is plenty of room for camera and board,most ROV builders like me use 4" or 6" pvc pipe and long
i do have it apart for a faster motor design put can post photos of it
antguru
that stinger site you have a link too it little like mine,have most parts boxed away and recut the front for added stuff like arm grabing tool
you said you need to control it,on POV can only use low current,no problem with 100 feet mine can do that you need like poly batteries or ni-cads but with ni-cads adds weight and you need a low battery circuit to turn on motors to bring it to the surface
I
dj another question on bluetooth in general ,i thoght using bluetooth dj made a code to go with but another member said he didnt,so read it on hook to hook it up very simple