Question 1: IoT-based Automatic Car Parking System using Arduino and NodeMCU esp32 determines the maximum parking space of 10 cars. Stepl: Make the connection of the switches and led in a circuit in figure 1. Step2: Create Blynk project in Local Blynk Server by using the name "AutoCarPark" for the project name. Step3: Design an Automatic Car Parking System program on a Mobile app with Blynk and IoT device with esp 32, as shown in figure 1 to figure 2. Working functions - By pressing switch CAR-IN and CAR-OUT on esp 32, the counter value will count up by one and count down by one, respectively. The counter value will be displayed on the LCD screen on line 1 and display "PARKING EMPTY" on line 2. - By pressing switch CAR-IN on esp32 and the counter value exceeds ten cars, a message appears "PARKING FULL" on the LCD screen on line 2 , and led status CARPARK FULL will be on. - By pressing the button COUNT RESET on mobile, the counter value is clear to zero, and the led status CARPARK FULL will be off. - By pressing switch CAR-IN and CAR-OUT on esp 32 , the led status CAR IN and CAR OUT on mobile will be on; otherwise are off. - Car counter reset by pressing COUNT RESET on a mobile phone