In this project I show you a lapcounter for slot car racing tracks

Last christmas I bought a slot car racing track for my grandchildren.
But soon they complained about the missing lapcounter.
As buying one was not an option for an electronic engineer, I decided to build one on my own.
Of course this lapcounter should have some features:
  • Displaying laps and laptime on a graphical display
  • Beacon for starting/stopping the race
  • Additional buzzer
  • Controlling of the race with an (optional) Android-Smartphone via bluetooth connection