In the simulator folder is a python script, that uses the serial port of a (for example) raspberry pi 4, to simulate a JSN-SR04T-2.0 ultra sonic sensor (see datasheet folder). It can be used to test ...

For this was needed 4 x 47K resistor (one for each modul). See about Mode 2 in the file docs/JSN-SR04T-2.0.pdf ...