Interfacing A Fish Finder Transducer To An Arduino

Hello again, my previous IoT project with using an ESP32 Dev board and JSN-SR04T sensor. was a succes. This i'm planing to upgrade the Sonar using fish finder transducer like this one (https://www.tokopedia.com/justinjonathan/sonar-sensor-pencari-ikanportable-100m-fish-findergps-lacak-ikan?trkid=f=Ca0000L000P0W0S0Sh,Co0Po0Fr0Cb0_src=search_page=1_ob=1000_q=sonar+sensor_bmexp=0_po=3_catid=1458_bmexp=0&whid=0)
Is it possible to just use the transducer, rewire the cable to interface with the ESP32 Dev Board(or arduino UNO), and add an external battery to drive the transducer ?

Thanks in advance

No.

Fish finder transducers intended for underwater sonar usually operate at high frequencies, typically at 50, 100 or 200 kHz and sometimes several Mhz, with high AC voltages (200VAC) across the terminals. A special transducer driver is required.

It takes quite a bit of energy to generate a sound pulse that can travel 100 m in water and give a detectable echo. If you have the unit you linked, you have already noticed that a fresh set of 4xAAA batteries runs only a couple of hours.

It should be possible to reverse engineer the unit, to get "start" and "echo" pulses out.

jremington:
No.

Fish finder transducers intended for underwater sonar usually operate at high frequencies, typically at 50, 100 or 200 kHz and sometimes several Mhz, with high AC voltages (200VAC) across the terminals. A special transducer driver is required.

It takes quite a bit of energy to generate a sound pulse that can travel 100 m in water and give a detectable echo. If you have the unit you linked, you have already noticed that a fresh set of 4xAAA batteries runs only a couple of hours.

It should be possible to reverse engineer the unit, to get "start" and "echo" pulses out.

Do you have any reference/guide on how to reverse engineer the transducer
or do you have other suggestion on alternatives ?

No, sorry.

jremington:
No, sorry.

Do you have any suggestion on other sonars that can travel up to at least 50 meters ?

Hi,
How do you want to use the fishfinder?
Be more specific, you want to use it in the water or air?

Can you tell us your electronics, programming, arduino, hardware experience?

What do you ultimately want to accomplish?

Tom... :slight_smile: