We live in a world where easy access, simple payment methods, and clever convenience businesses abound. All of this is made possible by RFID technology, which allows for wireless reading.

So, we will also try this system and make RFID- based Access management using RC522 RFID Reader, Tag and Arduino.

1. Introduction to RFID
2. Understanding RFID
3. Hardware Requirement
4. Software Requirement
5. Circuit Diagram
6. Code
7. Procedure
8. Conclusion

Introduction to RFID

Modern implementations of RFID ( Radio Frequency Identification ) technology, such as NFC payment, metro cards, self checkout stores, and automated toll gates, have made it a breakthrough technology. In this article, we will explore how RFID technology functions, discuss its advantages over more conventional approaches like barcodes and QR codes, and show you how to use an Arduino to build a basic access control system.

Understanding RFID

RFID tags and RFID Readers are two building blocks of RFID. There are two types of tags – passive (no power needed) and active (power required). The passive tags are more widely employed because they are less expensive.

While the reader has a controller chip with an RF signal generator and receiver, they are made up of a chip and antenna.

When a reader becomes enraged by a tag. It sends data after receiving power from electromagnetic or magnetic waves.

RFID are based on various frequencies, with the most common

1. LF (125-134 KHz)
2. HF (13.56 Mhz)
3. UHF (840-960 Mhz)

Advantages of RFID over bar codes and QR codes including-

1. increased reading distance (20 meters or more)
2. RFID lacks eyesight or line of sight
3. greater longevity
4. possesses the capacity to scan several tags at once
5. greater storage capacity (64kbits for RFID as opposed to QR’s constrained storage)

Using Arduino to create an access control system.

In order to showcase the usefulness of RFID technology, we will integrate an RFID reader with an Arduino board to establish a fundamental access control system.

Hardware Requirement

1. RFID reader with tags
2. LEDs
3. Servo motor
4. Arduino UNO
5. Arduino Cable
6. Breadboard
7. Jumper wires

Software Requirement

1. Arduino IDE

Circuit Diagram

Code

Procedure

Follow the circuit diagram’s instructions to connect the RFID reader to Arduino.

The supplied code, which included conditional loops for access control, pin definitions, libraries, and setup, should be uploaded to Arduino.

To allow access, place the RFID tag close to the reader.

Conclusion

Several industries have changes as a result of RFID technology’s ability to track and precisely identify things. It has a wider range of applications, from inventory management to access control and transportation. By linking RFID to Arduino, you can play with its characteristics and create original solutions for your projects. Discover RFID’s possibilities and enhance your do-it-yourself projects with this flexible technology.