Principle:
Since we are working in a virtual mode, we are using potentiometer(POT-HG) to measure the distance.
Since more will be the distance, less will be the voltage value and vice-versa.
Corresponding values will be displayed on the LCD(lm016l)
Reference Links for study purpose:
https://lastminuteengineers.com/arduino-sr04-ultrasonic-sensor-tutorial/