I have just bought some ultrasonic sensors from China for a project I'm developing, and the datasheet is not the best, also with my low electrical engineering skills, I am not sure of how to drive the passive piezoelectric crystal (I'm referring to the ultrasonic transducer). Could anyone give some advice on how to design a transmitter-receiver circuit for one same ultrasound sensor? Here is some data that might be useful. Also in terms of generating a 1 MHz square wave, is it possible to do on an ESP32?
This is part of the datasheet, apparently:
Advice on excitation voltages: 9-12 V，max 36 V, if could accept high power consumption, could undertake 110 V. The most suitable voltage, that user test and find signal-to-noise ratio of the received signal can meet their requirements.