RFID Access Control Kit: Build a Smart Card Reader with Arduino Uno, OLED & LED Feedback

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

This intermediate kit transforms your Arduino Uno into a real-world access control system. You’ll program the MFRC522 module to read the unique ID of each RFID card, match it against a list you define, and trigger a green LED plus buzzer for an authorised entry—or a red LED for a denied attempt. It’s the same principle used in office door locks and metro card readers, now on your breadboard.

What You'll Build

A breadboard-based RFID access control station that scans a card, displays its UID on a 0.96-inch OLED screen, and lights a green LED with a buzzer beep on approved cards, while unauthorised cards trigger a red LED. The system handles five RFID cards included in the kit, and you’ll write code to store and check UIDs—giving you a solid foundation for school projects or hackathon demos.

What You'll Learn

• Interface the MFRC522 RFID module with Arduino Uno using SPI communication
• Read and store RFID card UIDs in EEPROM to build a persistent access list
• Control OLED displays with I2C to show card status and system messages
• Implement conditional logic to drive LEDs and buzzer for grant/deny feedback

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

MFRC522 reads RFID card UID and matches against stored list. Green LED and buzzer confirm access grant.

What's in this kit

• Arduino Uno R3
• MFRC522 RFID
• RFID Cards x5
• 0.96in OLED
• 5mm Green LED x2
• 5mm Red LED x2
• Active Buzzer
• 10kΩ Resistors x5
• 100nF Caps x5
• 400-pt Breadboard
• M-M Wires x25
• M-F Wires x15
• 9V Battery Snap