IoT: Scenario based Circuit developing problem

Smart Parking Management System A smart parking system is developed to detect available parking spaces in a parking lot. Ultrasonic sensors are used to detect vehicle presence in each slot, and LED indicators show availability. A central system collects data and updates availability in real time on a mobile app or web platform. The goal is to reduce traffic congestion and improve parking efficiency. i. Identify the required sensors, actuators, and microcontroller/platform for this system. ii. Design the circuit diagram with pin configuration, showing connections between sensors, indicators, and the controller. iii. Analyze how the system detects occupancy, processes data, and communicates with a mobile or cloud platform.