Built Boat Echo Sounder with Arduino and Nasa Clipper Transducer

[awneil]

@paulhoepner

Does anyone maybe have a recommendation for a transducer

To do what, exactly?
Would need some specifications to make any recommendation...

Underwater Ultrasonic Sensor

For ultrasonic communication or echo ranging to work under water, you need transducers designed to couple the acoustic signal to water, rather than air. They tend to be quite expensive and require several hundred volts AC at typically 150 kHz to drive. The transducers in the cheap "Lucky Fish Finder" work well and give up to 100 m range, but the circuit used to drive them is not easy to modify or build. Lucky Fish Finder New | eBay There have been some attempts to make an inexpensive underwat…

@paulhoepner

that can be connected to Arduino?

Anything can be connected to an Arduino - with suitable interfaces...

How to know its compatible

You know the old saying: "assume" make an ass of U and me The things themselves neither know nor care anything about Arduino; they just care that they get driven with the correct signals - with respect to voltage, current, timing, etc. So you need to look at the specifications of those things, and see if those specification are compatible with the specifications of the Arduino you have in mind. Voltage: Some Arduinos are 5V; some are 3V. Current: Arduinos do not directly provide large amoun…