Transportation has become the need in public life. Every year the amount of vehicles has increased. Car is one kind of vehicle with significant increase. Every day lots of cars passing in the big cities and then parked their vehicle. But the condition of the parking place often make car drivers difficult to find an empty parking space. The condition of ideal parking place is necessary to provide the best service for car drivers. Car park monitoring system is needed to facilitate the car drivers knowing the location of an empty parking space. This Final Project is designed with several major components, there are microcontroller and light sensor. The result of creating this Final Project is a parking monitoring system that is able to determine the location of an empty parking space.