If you want to use I2C, you need to modify the module to make the chip go to I2C mode. This module support 3 protocol to communicate with Arduino, those are UART , I2C and SPI, but i will use the SPI because almost the Arduino community use this. The rfid_write_personal_data sketch demonstrates how you can write your name to the card:#define RST_PIN             9               // Configurable, see typical pin layout above#define SS_PIN              10              // Configurable, see typical pin layout above// Prepare key - all keys are set to FFFFFFFFFFFFh at chip delivery from the factory.//Serial.println(F("Authenticating using key A..."));//Serial.println(F("Authenticating using key A..."));//Serial.println(F("Authenticating using key A..."));//Serial.println(F("Authenticating using key A..."));As mentioned above, it is possible to use I2C instead of SPI in communicating with the RC522 RFID reader module. It is very easy to use as there are tones of library and examples, especially using Arduino. * Helper routine to dump a byte array as dec values to Serial. You should see something like the figure below: Approximate the RFID card or the keychain to the reader. These two libraries are dependent on each other. This code will be available in your Arduino IDE (after installing the RFID library). So, the following command will help to initialize the status:The above commands are just the main symbols but the rest of the commands will depend on the data.In RC522 once the card read commands has sent to the card, it will never stop until a stop command is sent. Even to stop the encryption the commands need to send from the microcontroller. First, understand that library examples and documentation are all for SPI but the same library is useable for other UART and I2C Serial communication.To use the RC522 with Arduino, which is the most popular board with this module, the following circuit needs to follow. Therefore, the following manual can help:Other tutorials and projects that use RFID Card reader modules:Enter your email address to subscribe to this blog and receive notifications of new posts by email. The MF RC522 is a highly integrated transmission module for contact-less communication at 13.56 MHz. Whenever a card is read by the module it stores itself unless a default data which is “FFFFFFFFFFFFh”. * ---------------------------------------------------------------------- * --------------------------------------------------------------------- *             MFRC522      Arduino       Arduino   Arduino    Arduino          Arduino *             Reader/PCD   Uno/101       Mega      Nano v3    Leonardo/Micro   Pro Micro * Signal      Pin          Pin           Pin       Pin        Pin              Pin * ---------------------------------------------------------------------- * RST/Reset   RST          9             5         D9         RESET/ICSP-5     RST * SPI SS      SDA(SS)      10            53        D10        10               10 * SPI MOSI    MOSI         11 / ICSP-4   51        D11        ICSP-4           16 * SPI MISO    MISO         12 / ICSP-1   50        D12        ICSP-1           14 * SPI SCK     SCK          13 / ICSP-3   52        D13        ICSP-3           15 * Helper routine to dump a byte array as hex values to Serial. In this article, I will show you how you can easily use cards as keys for anything, from attendance systems, to electronic locks and even arcade gaming!Upon purchasing the module, you will have the RFID reader board, an RFID card and tag and two eight-pin headers: one straight and one bent to 90 degrees. RFID-Modul RC522 am Arduino Leonardo Zur einfachen Identifikation von autorisierten Personen werden zunehmend RFID-Chips eingesetzt. The S50 RFID Cards will ease up the process helping you to learn and add the 13.56 MHz RF transition to your project.The module uses SPI to communicate with microcontrollers. We can use that memory to write data into the card. Upload and enjoy ####Subscribe to our newsletter and stay updated on the latest developments and special offers! The RC522 module works on 13.56 MHz frequency and it can act as a reader and write for UID/RFID cards. Therefore, the second command ReadCardSerial will help to detect that. El MFRC522 soporta las tarjetas Mifate S50, Mifare S70, Mifare UltraLight, Mifare Pro y Mifare Desfire.

Sometimes the card can be present on the module but it has no data. With this simple tutorial, we can apply this application to … Now the developers must describe the SPI initialization and Module initialization which needs to be done by the following two objects.Till these two objects, the communication and initialization of modules will complete but the above part is a little complex for some developers. Die von mir verwendete Library MFRC522 benutzt nur die SPI-Schnittstelle. It increase the range up to 5 cm but I want more then that (about 30 cm) what should I do .Please recommend to me. However, this protocol is not In Arduino programming, we learn about functions setup() and loop().

Hot Network Questions Therefore, the stops commands for both functions will be:The above commands are just simple reading commands with RC522 but now there are a bunch of other operations that can be done by RC522. El Mifare MFRC522 es un lector de tarjetas RFID que incorpora comunicación por bus SPI, bus I2C y UART, por lo que es sencillo de conectar con Arduino.