Getting Started with Mifare RC522 RFID Kit (RFID-RC522)

SC Lim
10 Aug 2017
1152

Last Updated on 5 August 2017
This article is written by internship student Khairul Baihaqi Bin Mohd Jafry

RFID (Radio-Frequency Identification) is commonly used nowadays in security systems such as door locks. RFID sets/modules can be very affordable, such as the Mifare MFRC522 chip we will be using in this tutorial.

The MFRC522 RFID readers comes with a RFID’s tag card. The MFRC522 communicates with cards or tags up to 1cm using a 13.56MHz electromagnetic field, then sends the data to an Arduino board through SPI communication.

This is the basic setup:

SPECIFICATION

MFRC522 chip based board
Operating frequency: 13.56MHz
Supply Voltage: 3.3V
Current: 13-26mA
Read Range: Approx 3cm with supplied card and fob
SPI Interface
Max Data Transfer Rate: 10Mbit / s
Dimensions: 60mm × 39mm

HARDWARE REQUIREMENT

CT UNO. (You may use other mainboards such as Arduino UNO and Arduino Mega)
Mifare RC522 RFID Kit
USB Micro B Cable (for CT UNO).
Jumper Wires
Breadboard

SOFTWARE REQUIREMENT

ARDUINO WIRING

RC522 MODULE	UNO	MEGA
SDA(SS)	D10	D53
SCK	D13	D52
MOSI	D11	D51
MISO	D12	D50
PQ	Not Connected	Not Connected
GND	GND	GND
RST	D9	D9
3.3V	3.3V	3.3V

STEPS

1. Connect CT-UNO board to the RFID reader.

2.Download and install MFRC522 library on your Arduino IDE.

3. You can try to upload an example sketch. Go to File>Example>MFRC522>DumpInfo.

4. After you’ve done upload the code, open Serial Monitor to see the information from RFID reader.

5.You may need this sub-function to get RFID’s unique ID without display it at Serial Monitor first.

void dump_byte_array(byte *Buffer, byte bufferSize)
{
  String readRFID = "";
  for (byte i = 0; i


REFERENCES



Mifare MFRC522 RFID Reader/Writer
RFID Library GitHub



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