Nice time pass and good tool to test your reflex time uses arduino 5 Led and 5 buttons one 16x2 LCD
Original code was developed by someone else and modified by me to add some more features like reset at end of game, Reflex time display etc i will add some more feature and fine tune the codes (i know there are a lots of variable used for no reason) when i get time
Write your name on line 6, save it, and then head back to GitHub Desktop. may be realese a more complex once with more buttons and an i2c display
Library used are LiquidCrystal.h stream.h avr/wdt.h
Thanks to the developers of the library.
Attached is the Proteus file for circuit Diagram and simulation