Dear friend, I'm trying to work with a 2MHz ultrasound transducer like is shown in your post. Unfortunately I do not have the pin description and I don't know how it work.
I have built security systems with distance sensor using trigger and echo pins (besides de power and GND) but in this case I don't know which is each pin.
Can you send me any information about the sensor and how operate with him.
Thank you in advance.
Thanks for liking the GoKart Tank! I am already working on it's smaller model as well as its all metal big brother.