Smart Parking System

🔍 About the project

ESP32-based parking system with license plate recognition. The system is connected in real time to the AdafruitIO IoT platform via MQTT and uses the Plate Recognizer platform to perform OCR on license plates. The system is divided into two separate circuits: one responsible for card reading and opening the barrier, and the other exclusively for capturing license plate images.

🔮 Technologies Used

📡 Adafruit Dashboard

🔧 ESP32-S3-CAM Config

For the firmware to work and properly utilize the board's available resources, apply these settings in the Arduino IDE or your preferred IDE. Failure to use these settings will result in the firmware malfunctioning.

💡 How the Circuit Works?

• Reads the card and checks if it has a valid ID in the system. If authorized, a blue LED will light up and a gate represented by a servo motor will open. If the card is declined 3 times, an alarm will sound and a red LED will flash.
• When the car approaches the space, an infrared sensor will detect its presence and start a counter. If x amount of time passes, an image will be captured and sent to the Plate Recognizer platform.
• The data collected by the sensors and camera will be sent in real time via MQTT to the AdafruitIO platform

🔧 Circuit Assembly

ESP­-WROOM­-32

Compenent	Component Pin	ESP32 Pin
RFID-RC522	SDA	GPIO05
RFID-RC522	SCK	GPIO18
RFID-RC522	MOSI	GPIO23
RFID-RC522	MISO	GPIO19
RFID-RC522	RST	GPIO27
RFID-RC522	VCC	3.3V
LCD 16x2 (I2C)	SDA	GPIO21
LCD 16x2 (I2C)	SCL	GPIO22
LCD 16x2 (I2C)	VCC	5V
Servo	SCL	GPIO13
Servo	VCC	5V
Buzzer	+	GPIO26
LED (Blue)	+	GPIO12
LED (Red)	+	GPIO14

ESP­32-S3-CAM

Compenent	Component Pin	ESP32 Pin
OV2640	XCLK	GPIO15
OV2640	SIOD	GPIO04
OV2640	SIOC	GPIO05
OV2640	Y9	GPIO16
OV2640	Y8	GPIO17
OV2640	Y7	GPIO18
OV2640	Y6	GPIO12
OV2640	Y5	GPIO10
OV2640	Y4	GPIO08
OV2640	Y3	GPIO09
OV2640	Y2	GPIO11
OV2640	VSYNC	GPIO06
OV2640	HREF	GPIO07
OV2640	PCLK	GPIO13
IR-Sensor	OUT	GPIO40
IR-Sensor	VCC	5V

- By Breno -