Project Hub /Security Surveillance & Defense/RFID / NFC Access Systems/RFID Based Attendance System Using Arduino

Beginner

ARDUINO

₹1,500 – ₹5,000

6 – 12 Hours

Partial Kit

RFID Based Attendance System Using Arduino

Build a complete automated RFID attendance system using an Arduino Uno, MFRC522 RFID reader, DS1307 RTC module, and I2C LCD display for accurate check-ins and check-outs.

Originally published on CircuitDigest

View original tutorial

Parts You'll Need

This project is sourced from another site, not written by us — this list is our best match of their components against what we stock, not a verified bill of materials. Always check the original blog (linked above) for the actual parts list before buying.

Arduino UNO R3 Board (Compatible) – ATmega328P Microcontroller with USB Cable Rs. 999.00
RFID Reader/Writer RC522 SPI S50 with RFID Card and Tag Rs. 190.00
I2C Module for 16x2 (1602) Character LCD Rs. 109.00
2-Slot 18650 Holder with Protective Cover and On/Off Switch – Case Rs. 109.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

We don't carry yet: RTC Module DS3231 / DS1307
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How It Works

The RFID Based Attendance System operates by combining radio-frequency identification, real-time clockkeeping, and local display subsystems coordinated by an Arduino Uno microcontroller. When an authorized Mifare Classic 1K RFID card or tag is brought near the MFRC522 RFID Module, the module uses radio waves to read the unique identifier (UID) encoded on the tag via the SPI communication protocol. Simultaneously, the Tiny RTC DS1307 Module maintains the current date and time using an I2C interface, ensuring accurate timestamping for every interaction. Upon a successful scan, the Arduino compares the scanned UID and retrieves the current timestamp, logging the attendance event. The system status, user prompts, and confirmation messages are then rendered on the 16x2 I2C LCD Display, minimizing wiring complexity compared to parallel LCD setups. Users can interact with the system locally using two push buttons, which can be programmed to trigger administrative menus, clear logs, or toggle display modes. The entire circuit is built on a full-size breadboard and powered via a regulated 5V-12V DC adapter or a 2S Lithium-ion battery, ensuring stable operation across the microcontroller and all peripheral modules.

Why Build This

Develop practical embedded systems knowledge by integrating multi-protocol peripherals like SPI and I2C into a single cohesive architecture suitable for undergraduate engineering portfolios.

Implement automated tracking solutions applicable to real-world scenarios such as university lecture monitoring, laboratory access control, and departmental attendance logging.

Gain hands-on experience interfacing sensors, real-time clock modules, and display units with microcontroller firmware to build reliable standalone embedded appliances.

Real-World Application

Office attendance tracking, school and university student monitoring, library access control, and visitor management systems.

Skills You'll Learn

SPI communication protocol

I2C bus architecture

RFID tag parsing and UID handling

Real-Time Clock (RTC) synchronization

LCD display interfacing

push button debounce and input handling

Safety Precautions

Ensure correct voltage supply (3.3V vs 5V) for the MFRC522 module to prevent damaging the hardware. Double check all wiring and power rails before connecting the USB power supply.

Technology Tags

RFID

MFRC522

I2C

SPI

EEPROM

RTC

DS1307

LCD DISPLAY

C++

EMBEDDED SYSTEMS

Frequently Asked Questions

Why is it critical to check the voltage supply for the MFRC522 module?

The MFRC522 logic and internal circuitry typically operate at 3.3V. Connecting its data pins directly to a 5V logic source without proper level shifting or ensuring correct power rail connections can permanently damage the module.

How does the system know the exact time of each check-in?

The Tiny RTC DS1307 Module includes a battery backup and maintains precise date and time data, which the Arduino queries via the I2C protocol whenever an RFID tag is successfully scanned.

Can I use standard wires instead of a full-size breadboard?

While you can wire components directly using jumper wires, a full-size breadboard provides a stable, organized platform to distribute power and ground rails to the Arduino Uno, RFID reader, RTC module, LCD, and push buttons.

Gallery

This page is part of Kitkraft's Project Hub — a curated collection of electronics & robotics projects gathered from the maker community to help students and hobbyists discover and learn to build. Kitkraft does not claim authorship of the original project, and makes no representation as to the accuracy, completeness or safety of third-party source material. The summary and "How It Works" explanation above are AI-generated, rewritten with reference to the original tutorial — not a reproduction of it. Full credit and a direct link to the original source are provided above. If you're the original creator and have a concern about how your work is represented here, please contact us and we'll address it promptly.

Kitkraft Project Hub — curated from the maker community, credited at the source.

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