RFID Reader Module

The RFID Reader Module project demonstrates how to use an Arduino Nano to interface with an RFID reader module to read and verify RFID tags. RFID (Radio-Frequency Identification) technology is commonly used for access control, inventory management, and tracking applications. This project reads the UID (Unique Identifier) of RFID tags and verifies them against a list of valid tags.

Components Needed

• Arduino Nano
• MFRC522 RFID Reader Module
• RFID Tags/Cards
• Jumper Wires

Circuit Diagram

Circuit Setup

1.Connect RFID Reader to Arduino Nano:

SS (SDA) Pin: Connect to digital pin 10 on the Arduino Nano.

RST Pin: Connect to digital pin 9 on the Arduino Nano.

MOSI Pin: Connect to digital pin 11 on the Arduino Nano.

MISO Pin: Connect to digital pin 12 on the Arduino Nano.

SCK Pin: Connect to digital pin 13 on the Arduino Nano.

3.3V Pin: Connect to 3.3V on the Arduino Nano.

GND Pin: Connect to GND on the Arduino Nano.

Instructions

1.Circuit Setup:

Wire the RFID reader module to the Arduino Nano as described in the circuit setup section.

2.Code Upload:

Open the Arduino IDE and paste the provided code.

Upload the code to the Arduino Nano.

3.Testing:

Once the code is uploaded, open the serial monitor.

Scan your RFID card/tag near the reader module.

The serial monitor will display the UID of the scanned tag and indicate whether it is a valid or invalid RFID tag.

Applications

Access Control: Use RFID tags for controlling access to secure areas or devices.

Inventory Management: Track and manage inventory items with RFID tags.

Identification Systems: Implement RFID-based identification systems for personnel or assets.

Notes

Ensure the RFID tags you use have unique UIDs and are listed in the validRFID array in the code for validation.

Modify the validRFID array in the code to include the UIDs of your valid RFID tags.

Keep the RFID reader module away from electromagnetic interference to ensure accurate readings.