Hi guys i want to build a ultrasonic leak detector/sensor circuit. I bought two of the HC-SR04 and try to set one of them as a receiver one of them as a transmitter but no resault. Both work great when i try them as a range sensor but what i need is one transmitter and one receiver.
I need to put the transmitter into the container so it will generate a wawe while i am outside with the receiver on my hand looking for that sound wave. If my receiver pick up the wave its mean there is a leak in that container if not tha everything is perfect.
So can anyone please help me how to build it. Is that possible to use HC-SR04 as a receiver and transmitter not both if so how can i do that or if you guys have any other ideas please help me.
Thank you all)