Arduino RFID Card Reader with OLED Display

This project implements an RFID card reader using an Arduino, MFRC522 RFID module, and an OLED display. It provides a user-friendly interface for reading RFID cards and displaying their information.

Table of Contents

• Features
• Hardware Requirements
• Software Requirements
• Pin Connections
• Installation
• Usage
• Contributing
• License

Features

• Reads RFID cards using the MFRC522 module
• Displays card information on an OLED screen
• Shows card UID, type, size, and SAK value
• Attractive UI with framed display
• Serial output for debugging

Hardware Requirements

• Arduino board (Uno, Nano, Mega, etc.)
• MFRC522 RFID module
• SSD1306 .96inch OLED display (128x64 pixels)
• RFID cards/tags (Mifare 1K, etc.)
• Jumper wires

Software Requirements

• Arduino IDE
• Required libraries:
  • SPI
  • Wire
  • Adafruit_GFX
  • Adafruit_SSD1306
  • MFRC522

Pin Connections

Component	Arduino Pin
MFRC522 RST	9
MFRC522 SDA (SS)	10
MFRC522 MOSI	11
MFRC522 MISO	12
MFRC522 SCK	13
OLED SDA	A4
OLED SCL	A5

Note: Pin connections may vary depending on your Arduino board. Please refer to the datasheet of your specific board for accurate pin mapping.

Installation

1. Clone this repository or download the ZIP file.
2. Open the Arduino IDE.
3. Install the required libraries through the Library Manager.
4. Open the .ino.
5. Select your board board and port in the IDE.
6. Upload the sketch to your board.

Usage

1. Power up your board with the connected MFRC522 module and OLED display.
2. The OLED screen will show a waiting message.
3. Present an RFID card to the MFRC522 module.
4. The card's information will be displayed on the OLED screen and sent to the Serial Monitor.
5. To read another card, simply present it to the module.