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Topic: HC-SR04 for underwater use (Read 1 time) previous topic - next topic

victorjung

Hi, i am baking a arduino-boat, and it would like to mesure the depth under my boat, with a really max depth of 2m. i wanted to put it in a small waterproof box, but il will probably stop the sound and give a distance of 0cm. do you think if it could work if i write my own function with experimentals values? or most of the sound will be stoped by my box, and i wouldnt be able to measure anything?
Any ideas?
thanks for giving tips!

AWOL

I think the coupling to the water will be very poor, and you'd have to adjust for the faster speed of sound in water.
I very much doubt you'd get anything like two metre range.
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.

victorjung

and do you have any other ideas for a cheap sensor wich could do it?
I thought about ir but they have small range...

pylon


AWOL

#4
Jun 30, 2012, 07:22 pm Last Edit: Jun 30, 2012, 07:26 pm by AWOL Reason: 1
Fishfinder transducer?
It's a pity the operating frequency doesn't match, or you could try unsoldering the transducer from an air sonar unit, and replacing it with a water one.
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.

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