I’m new to arduino (infact opened box and started playing about 10minutes ago) and have an HC-SR04 setup and measuring the distance across my desk right now. However I want to play a little more and experiment. Is there anything in the electronics on the HC-SR04 that dictates, that the ping has to come from the same module as the echo is recieved. Or could I buy a second HC-SR04 and use that to send the ping, and then recieve on the original HC-SR04.
I.e. wire both up then use the trig on one unit, and the echo on the other?? Would it work?