Arduino UNO :- http://amzn.to/2jh3MWO
Display 16x2 :- http://amzn.to/2kjoIhE
keypad 4x4 :- http://amzn.to/2kuEGBK
Jumpers wires :- http://amzn.to/2kjvHag
Potentiometer :- http://amzn.to/2jhanAd