RFID-MFRC522 with Arduino Board.

1.    RFID MFRC522: 

     A normal RFID kit is just like our ATM card which can send a specific data to controller when it gets in touch with its reader module.

      MFRC522 is name of controller which is being used in this RFID kit.

 Figure 1: RFID MRFC522

   

1.1 Specifications of RFID MFRC22

• Module Name:MF522-ED
• Working current：13 - 26mA / DC 3.3V
• Standby current：10 - 13mA / DC 3.3V
• Sleep current：<80uA
• Peak current：<30mA
• Working frequency：13.56MHz
• Card reading distance ：0～60mm （Mifare1 card）
• Protocol： SPI.
• Data communication speed：10Mbit/s Max.
• Card types supported: Mifare1  S50, Mifare1 S70, Mifare UltraLight, Mifare Pro, Mifare  Desfire
• Dimension: 40mm × 60mm
• Working temperature: -20—80 degree
• Storage temperature: -40—85 degree
• Humidity: relevant humidity 5%—95%

This RFID kit works on the SPI communication protocols and pins of board is described below.

 1. VCC supply: this pin is supply voltage pin which take 3.3v DC power supply.

 2. GND: this pin is ground power supply connection pin.

 3. RST: reset pi which is used to reset the controller or communication.

 4. SDA: Serial data pin.

 5. SCK: Serial clock pin.

 6.MISO: master in slave out pin.

 7.MOSI: master out slave in pin.

                               

2.    Component required: 

    In this project we A RFID system is to be made so few component would needed which are below.

           ·         An Arduino Uno board.

           ·         RFID MFRC522 module.

           ·         Jumper wires.

           ·         Bred board.

3.    Arduino interfacing with RFID MFRC522:

    RFID MRFC522 communicates with the Arduino board on SPI communications protocols. It does contain 8 Pin which have certain specific purpose.

S no.	RFID MFRC522 pins	Arduino pins
1	VCC	3.3v pin of arduino
2	GND	GND pin of arduino
3	RST pin (Reset)	Pin 9
4	SS (ship select pin)	Pin10
5	MOSI (Master out slave in)	Pin11
6	MISO (Master in slave out)	Pin12
7	SCK  (Serial clock)	Pin13

NOTE:  - Don’t connect circuit with 5v it may harm the circuits. And don’t forget to add library with it. Make all the connection which are shown in the above diagram.

Here is link for Library of MFRC522 and data sheets of this RFID module.

Data Sheet:   http://www.nxp.com/documents/data_sheet/MFRC522.pdf

MFRC522 Library:  https://github.com/miguelbalboa/rfid

Arduino code for finding out unknown cards number: Check_RFID_ card_numbers

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