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Thanks for the response.
I was thinking about the capacitance approach but i couldn't figure out how to do it, should two plates be exposed to the sea water and then measure the capacitance between them?
Could the salt affect that overtime?
If the fish pass too fast, will the capacitance change...
@KlausST
I didn't say that, but if someone is just saying "that drawing is meaningless" without actually reading the post and he just respond like that, do you think that's a good practice? And in reality i didn't say anything, i just said i mentioned the information you asked about in the...
If you actually read the question, you will see that i mentioned:
the inner diameter of the enclosure will be in the centimeter range to allow one fish to pass at a time.
but i think you didn't focus about the post itself. thank you anyway.
I would like to create an underwater fish detector - completely operating underwater (personal project)
The enclosure will be a waterproof hollow cylinder (possible material to use are: acrylic, Polycarbonate or PVC), a PCB will be sealed inside that enclosure containing the sensor (the sensor...
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