Arduino and RFID reader MFRC522 for Door Unlock

posted in: Arduino | 10

Download # Arduino Code (*.ino file)

Download # Arduino Code (to delete lost tag) (*.ino file)

Download # RFID library (*.rar file)
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10 Responses

  1. Asai Thambi

    RF\SPI.cpp.o: In function `SPIClass::begin()’:
    C:\Users\Mathi\Documents\Arduino\libraries\RF/SPI.cpp:24: undefined reference to `SPIClass::pinMode(unsigned char, unsigned char)’
    C:\Users\Mathi\Documents\Arduino\libraries\RF/SPI.cpp:25: undefined reference to `SPIClass::pinMode(unsigned char, unsigned char)’
    C:\Users\Mathi\Documents\Arduino\libraries\RF/SPI.cpp:26: undefined reference to `SPIClass::pinMode(unsigned char, unsigned char)’
    C:\Users\Mathi\Documents\Arduino\libraries\RF/SPI.cpp:28: undefined reference to `SPIClass::digitalWrite(unsigned char, unsigned char)’
    C:\Users\Mathi\Documents\Arduino\libraries\RF/SPI.cpp:29: undefined reference to `SPIClass::digitalWrite(unsigned char, unsigned char)’
    C:\Users\Mathi\Documents\Arduino\libraries\RF/SPI.cpp:30: undefined reference to `SPIClass::digitalWrite(unsigned char, unsigned char)’

    • admin

      Please provide more info/details on this error. What did you do, did you copied the library folder into proper folder etc.

  2. markee albia

    sir can i ask about the details of this project? i need some help for my school project..i dont what to buy and how much it will cost..

  3. meheer

    sir thankyou for helping me can you please tell where will the led be put
    -regards meheer shukla

    • admin

      it’s all in the code:

      #define redLed 7
      #define greenLed 6
      #define blueLed 5

  4. Eme

    I am ready to buy… please how can I get code for MF522 and NC door lock latch and Adriano? send details to my email address.

  5. Matt

    hello, thanks for great code. I have a question. Can I add card uid to eeprom from list befor upload this code? For example: eeprom.write(position,uid), eeprom.write(2,ABCDEFGH)

  6. Ali

    Im copied all code and library,but I have a this error.

    C:\Users\ALI~1\AppData\Local\Temp\arduino_modified_sketch_137175\sketch_nov08a.ino: In function ‘boolean checkTwo(byte*, byte*)’:

    C:\Users\ALI~1\AppData\Local\Temp\arduino_modified_sketch_137175\sketch_nov08a.ino:388:16: warning: NULL used in arithmetic [-Wpointer-arith]

    if ( a[0] != NULL ) // Make sure there is something in the array first


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