How to make Distance measuring device with Display

YouTube Tutorial:-

Materials:-

Arduino UNO :- http://amzn.to/2jh3MWO

Ultrasonic Sensor :- http://amzn.to/2jTiX9H

Display 16x2 :- http://amzn.to/2kjoIhE

Jumpers wires :- http://amzn.to/2kjvHag

Potentiometer :- http://amzn.to/2jhanAd

Mini switch :- http://amzn.to/2kuDVbT

Circuit:-

Code:-