Smart Parking System – Arduino Mega Based

This project is a fully functional Smart Parking System developed using an Arduino Mega 2560, ESP8266, various sensors, DFPlayer Mini, and a custom web dashboard. It tracks parking space availability, displays real-time status on an LCD, manages ramp control, and integrates features like fire and water level detection.

---

Features

• 🚘 Detects parked vehicles using ultrasonic sensors
• 📡 Communicates status via ESP8266 to web dashboard
• 🎵 Plays audio feedback with DFPlayer Mini
• 💧 Water level monitoring
• 🔥 Fire detection with flame sensor and buzzer alarm
• 🌡️ Displays temperature and humidity via DHT11
• 🚦 Controls traffic lights (2 independent semaphores)
• 🎛️ Servo-controlled ramp opening/closing with physical button & IR sensors
• 🖥️ Outputs current state on ST7920 LCD screen
• 🔄 Web communication supports remote control commands (open/close/reserve)

---

Components Used

Component	Function
Arduino Mega 2560	Main microcontroller
ESP8266 WiFi module	Communication with web dashboard
DHT11	Temperature & Humidity
DFPlayer Mini + Speaker	Plays audio feedback
2x Ultrasonic Sensors	Detects vehicle presence
IR Sensors	Entry/Exit detection
Flame Sensor	Fire detection
Water Level Sensor	Analog water detection
Piezo Buzzer	Audible alarms
Servo Motor	Ramp barrier control
ST7920 (U8g2lib) LCD	Real-time system display
2x Traffic Semaphores	LED control for entry/exit
Relay Modules	Fan and water pump control

---

Code Highlights

• Full loop() logic handles:
  • Vehicle detection
  • Ramp logic
  • ESP commands (OPEN, CLOSE, RESERVE1, GET_STATUS, PLAY, STOP)
  • Water level reading & flame detection
  • Servo control with slowMove()
  • Traffic light logic via enum states

---

📡 Web Communication

ESP8266 communicates over Serial2, receiving and responding to commands:

• GET_STATUS: sends available/occupied parking status
• RESERVE1: reserves a parking space if available
• OPEN / CLOSE: opens or closes the ramp
• PLAY / STOP: controls MP3 playback

---

Display Information

The LCD shows:

• Free and occupied parking slots
• Distance readings from ultrasonic sensors
• Water level status
• “Parking Full” warning when no space is available

---

Project Structure

Arduino_Smart_Parking/ ├── ArduinoMega_TestKod.cpp # Full Arduino logic ├── Pametan_Parking_sajt/ # Web interface (HTML + CSS) ├── Documentation/ # PDF/DOC reports ├── ParkingCss.css / index.html

---

▶️ How to Use

1. Upload ArduinoMega_TestKod.cpp to Arduino Mega.
2. Connect ESP8266 to TX2/RX2.
3. Open serial monitor and website interface.
4. Interact via button, IR sensors, or browser.
5. Monitor parking status live on LCD and web.

---

Author

Developed by Nikola Pejak as an advanced real-world IoT + embedded systems project integrating sensors, communication, and user interaction.

---

📃 License

This project is open-source and free for educational use.