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Topic: IR Receiver Underwater? (Read 2 times) previous topic - next topic

zoomkat

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I'd like to achieve 4.5 foot depth underwater.  I thought a BT module or WIFI board would work fine sealed in a submarine.  Radio communication reflects off water? Also, what if I heat shrink-wrap an ultrasonic ping sensor, mount it on top the hull and use it for obstacle avoidance?  Will the chirp and echo work underwater?


Natures warning sign: If any of that worked, you would see a lot of projects already using it.
Consider the daffodil. And while you're doing that, I'll be over here, looking through your stuff.   8)

Grumpy_Mike

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so I don't understand why I'm asked how much horizontal I'm aiming for

Pythagoras.

cjdelphi

How does IR cope if the signal is sent under water to begin with?

encryptor

#13
Jan 19, 2013, 12:31 am Last Edit: Jan 19, 2013, 12:37 am by encryptor Reason: 1
Lol!  Perhaps there was a nicer way for me to ask.  sorry, I did give an answer of 10ft.  Perhaps the IR signal refracts off the water or gets construed entering the water.  Beats me how IR copes with signals under water. It probably won't work well.  I did see a RC submarine once, so I wonder if that was just automatized to just float around.  Maybe the best idea would be to have a submarine with tube and a float where the BT module would be placed.  I'll run the BT module's wires down the tube to the submarine. That way it can be BT radio controlled and still be a stealthy spy bot. :smiley-mr-green:  
peace*&^

PeterH


Maybe the best idea would be to have a submarine with tube and a float where the BT module would be placed.  I'll run the BT module's wires down the tube to the submarine. That way it can be BT radio controlled and still be a stealthy spy bot. :smiley-mr-green:  


That strikes me as a far more practical idea from the technical point of view, you will still need to do some pretty good water proofing though.

Given the implication that you are planning to use this in a swimming pool to spy on people using the pool, I have to say that I would expect the swimmers and hotel management to take a very dim view of that. It might only be intended as a bit of fun, but in the wrong circumstances I think you could get into some serious trouble.
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