Distance measurement with ultrasonic sensor using Arduino Uno

This project is about measuring the distance between an ultrasonic sensor and a surface. HC-SR04 is an ultrasonic sensor with 4 pins. Two for + and - of the supply. Trigger pin which is responsible for emitting ultrasonic waves and echo pin which is used for receiving waves.

Download link:

https://drive.google.com/open?id=19PL5qU8bKDY2yc17RJ3dPg0v_cDOdicG