Intelligent Parking System

Arduino UNO simulation built with Wokwi

A smart parking system that detects slot occupancy, displays real-time status on an LCD, and controls entry/exit gates automatically using servo motors.

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Features

• 4 parking slot detection using push buttons (simulating IR sensors)
• Green LED = slot free, Red LED = slot occupied
• 16x2 I2C LCD showing free slot count and individual slot status
• Entry gate servo — opens only when slots are available
• Exit gate servo — opens on demand
• Parking full detection — entry gate locked when all slots occupied
• Toggle mode — one click to park, one click to leave

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Simulation

Open directly on Wokwi: https://wokwi.com/projects/464188519205963777

Or simulate locally:

1. Open wokwi.com
2. Create new Arduino UNO project
3. Replace diagram.json with the one in this repo
4. Replace sketch.ino with the one in this repo
5. Click Play

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Pin Map

Component	Arduino Pin
Slot 1 button	D2
Slot 2 button	D3
Slot 3 button	D4
Slot 4 button	D5
Entry gate button	D6
Exit gate button	D7
Green LED 1-4	D8-D11
Entry servo	D12
Exit servo	D13
Red LED 1-4	A0-A3
LCD SDA	A4
LCD SCL	A5

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Components

Component	Quantity
Arduino UNO	1
LCD 16x2 I2C	1
Servo motor	2
Push button	6
Green LED	4
Red LED	4
Resistor 220Ω	8

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Libraries Required

• LiquidCrystal_I2C by Frank de Brabander
• Servo (built-in)
• Wire (built-in)

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How to Test

Key	Action
1	Toggle Slot 1
2	Toggle Slot 2
3	Toggle Slot 3
4	Toggle Slot 4
5	Open exit gate
7	Open entry gate

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Project Structure

intelligent-parking-system/
├── sketch.ino        # Arduino source code
├── diagram.json      # Wokwi circuit diagram
├── libraries.txt     # Required libraries
└── README.md         # This file

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Author

Muniem Amjad

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License

MIT License — free to use and modify