“This Instructable will show you how to make a stop watch out of an Arduino.”Link to articleRelated ContentRelated Posts:Smart Door LockLowcost Wireless Rocket LauncherDecimal to Hexadecimal ConverterDoor Security SystemVending Machine with RFIDHome automation using KeypadAutomatic Arduino Pet Feeder - 3D Printed (With Stepper Motor)Arduino SpeedMath GameConnect 4 Playing MachineHow to Make Arduino Calculator With LCD Display