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Attract fish by sound, light or anything else

Discussion in 'Sensors and Actuators' started by i3layli, May 22, 2019.

  1. i3layli


    May 22, 2019
    My project right now is the depth finder. I've been looking at fishfinders and how they work and I think that's probably the best way to go -
    run an electronic input into a transducer and send out a fairly low-frequency sound wave since the lake will probably be deep. (Erie/Ontario).
    However, I've been looking for such an ambitious soul who has posted such a schematic but no such luck.
    I'm a little sketchy on how to make a reciever that will take it the returning sound waves. Can anyone lend me their Genius?

    Thank you so much!
    Last edited by a moderator: May 23, 2019
  2. hevans1944

    hevans1944 Hop - AC8NS

    Jun 21, 2012
  3. Harald Kapp

    Harald Kapp Moderator Moderator

    Nov 17, 2011
    Follow this tip, come back for help if you get stuck.
    Last edited by a moderator: May 23, 2019
  4. hevans1944

    hevans1944 Hop - AC8NS

    Jun 21, 2012
    And I also agree that the title of the thread bears no resemblance to the homework topic, if the topic is how to build a depth meter.
    You need to do a LOT of research about how to use acoustical methods to locate the depth of an object in water, i.e., commonly known as active sonar.
    Come back here when you have something to talk about, or you find something you don't understand. We will try to help if we see you are trying to help yourself.
    Last edited by a moderator: May 23, 2019
  5. davenn

    davenn Moderator

    Sep 5, 2009
    I really don't think it should be in HW section
    there is zero indication that it homework of any sort

    as a result I will move it and tidy up the thread, removing/editing posts referring to homework
    Last edited: May 23, 2019
  6. davenn

    davenn Moderator

    Sep 5, 2009
    Hi there
    Welcome to EP

    Now that I have moved the thread and tidied it up
    come back and let us know what you have discovered so far.
    Did you look at the links that @hevans1944 mentioned ?

    hevans1944 likes this.
  7. FuZZ1L0G1C


    Mar 25, 2014
    dynamite 'em


    May 20, 2017
    Try bait!
  9. BobK


    Jan 5, 2010
    It might be easier to repel fish. A loud audio signal might do it.

    Put concentric rings of transducers around the area you want to attract fish to. Activate the outer ring first, pushing all of the fish toward the center. Then, activate inner more rings in sequence. Then all the fish will be where you want them!

  10. Bluejets


    Oct 5, 2014
    2 inch "hook" works for me.

    Attached Files:

  11. hevans1944

    hevans1944 Hop - AC8NS

    Jun 21, 2012
    This thread is going nowhere. So howsabout a little out-of-the-box suggestion: mount a water-proof loudspeaker slightly underwater on the side of the boat. Play some fish-attractive sounds through it. Maybe try recording "Here, fishy! Fishy, fishy, fishy!" Search the Internet for fish-attracting sound clips. Report back here with pictures of results (species, length, weight) along with a "fish story" of how well it worked for you.
    Martaine2005 likes this.
  12. FuZZ1L0G1C


    Mar 25, 2014
    While not claiming any expertise in the 'fish-calling' field, wouldn't any sound transmitted into their environment more likely scare the fish off?
    The vibrations may be interpreted by the fish as an approaching predator, or alarm 'clicks' of the school.
    There are artificial lures that pop or rattle when trolled at medium to high speed, to hopefully grab the predator fishes' attention, but also simulates a fish / frog / insect in distress.
    From wildlife / fishing documentaries seen on DSTV, a light source at night or dusk / dawn seems to work quite well.
  13. Nanren888


    Nov 8, 2015
    Traditional fish aggregating devices (FAD) are silent floating platforms of various sizes. They usually don't have any active devices on board.Perhaps tossing it out there to float is enough.
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