Simple Arduino Stopwatch

This is a stopwatch that starts when you press a button and stops by pressing that same button.

The materials you will need are a lcd screen, potentiometer, a push button, breadboard, around 20 wires(can be any color) and Arduino circuit board.

Make sure the the push button is on both rails and the potentiometer lines up with the correct position as in the photo above.

Add the lcd screen to display the stopwatch and place it behind the potentiometer so it can control the brightness of the lcd screen.

The code is 36 lines long and to get the full code look at both pictures.