How to Make Automatic Parking Gate!

Parking management is an important problem in modern cities due to limited space and increasing numbers of vehicles. This project is a miniature automated parking system designed to simulate a real-world smart parking solution.

My name is Jassahib Singh I am a Student in grade 12 and my project uses an Arduino microcontroller, ultrasonic sensing, a servo-controlled barrier gate, an LCD display, and a push-button exit system. It automatically detects vehicles entering the parking lot, controls access, tracks available spaces, and updates the user through a display.

This project demonstrates mechanical systems, electronics, programming logic, and automation principles.

Electronics:

1. Arduino Uno
2. HC-SR04 Ultrasonic Sensor
3. SG90 Servo Motor
4. 16x2 I2C LCD Display
5. Push Button
6. Breadboard
7. Jumper Wires
8. USB Cable

Software:

1. Arduino IDE

Ultrasonic Sensor (HC-SR04)

1. TRIG → Pin 4
2. ECHO → Pin 3
3. VCC → 5V
4. GND → GND

Servo Motor

1. Signal → Pin 9
2. VCC → 5V
3. GND → GND

Exit Button

1. Signal → Pin 10
2. One side → GND
3. (Uses Arduino internal pull-up resistor)

LCD Display (I2C)

1. SDA → A4
2. SCL → A5
3. VCC → 5V
4. GND → GND

Power Connections

1. Arduino 5V → Breadboard power rail
2. Arduino GND → Breadboard ground rail

A lightweight barrier was attached to the servo arm to simulate a parking gate.

The Arduino code was uploaded through Arduino IDE.

The Code Was Taken From the Website Sunfounder but than was Modified by me to change the Ir Obstacle sensor too a Button. I changed everything into its own Indivual loop rather being all in one loop so it is easier too fix any problems in the code! I also used the skills i learnt about switch case's and etc in grade 12 Computer Science too improve the code

The Source where the inspriation code was taken from: https://docs.sunfounder.com/projects/summary-of-fun-projects/en/latest/arduino/parking_lot4.0.html

My Circuit was tested under different conditions.

Test 1: Vehicle Entry

Input:

Object placed near ultrasonic sensor.

Result:

1. Gate opened
2. Parking spaces decreased
3. LCD updated

Successful ✅

Test 2: Vehicle Exit

Input:

Exit button pressed.

Result:

1. Gate opened
2. Parking spaces increased

Successful ✅

Test 3: Full Parking Lot

Input:

Attempted entry when spaces = 0.

Result:

Gate remained closed.

Successful ✅

After these tests i was able to Showcase My teacher my project

The automated parking system successfully demonstrates how engineering principles can be applied to solve real-world problems. The combination of sensors, programming, and mechanical control created a functional smart parking prototype.

This project improved understanding of automation, and the engineering design process.