Problem
Design smart parking code with arduino: materials used; (i) two servo motors (A input and B output). (ii) 1 HC-SR04 (only door A opens for the car entering, container B only opens door for the car leaving). Example: If the distance is less than 40 cm, door A opens, if it is larger, door B opens. (iii) LCD display (it will show the number of vehicles in the parking lot) example: the number of cars in the parking lot.