Finding a free parking lot contributes largely to a total traffic congestion and increases gas emissions in urban and overpopulated cities. Recent advances in smart parking systems adopt Internet of Things (IoT) concepts which tend to improve traffic bottlenecks by providing information about available parking lots. The detection of vehicle presence at the parking lot usually means adopting solutions comprised of power-hungry and battery-operated sensor devices. In this a hardware-based approach is introduced which aims at building a powered and autonomous sensing node equipped with IR sensor,RFID to feel the vehicle presence. The joint use of such technologies is exploited to develop a power autonomous node capable of cost-effectively sensing the car presence and transmitting the parking lot status.