Reading RFID tags with RC522 module

Hi!

I'm having an issue using the 522 rfid reader module.

The thing is that I have a classic RFID 13.56 reader that works only as a keyboard emulator that it types in a 2736734546 (eg). I tried a varity of Examples from the 522 library but I it always get a different combination of letters and numbers (never the same one as my other readers). Eg. 6E645C79

Do you know how could I get the 2736734546 form out of the Arduino?

Also, I would like to know if it could get to work as keyboard emualtor. I have an Arduino Mega but I heard this feature was only available for Leonardo and other types (not for Uno or Mega). Is this true?

Thanks in advance!

Is the RFID 13.56 device outputting a decimal representation of a tag number and the 522 rfid device outputs a hexadecimal representation? Use an online calculator to check.

The Leonardo and the Pro Micro use an Atmega32u4 chip and can be used for keyboard emulation.

Thanks for your reply!

I'd checked that before but I couldn't get a coincidence.

The classic reader prints: 2036098158 (hex: 795C646E)

RC522 module prints: 6E645C79 (decimal: 1852071033)

Any ideas of how could I transform any of these to the other?

Thanks!

nicoacosta8:
Thanks for your reply!

I'd checked that before but I couldn't get a coincidence.

The classic reader prints: 2036098158 (hex: 795C646E)

RC522 module prints: 6E645C79 (decimal: 1852071033)

Any ideas of how could I transform any of these to the other?

Thanks!

Well, I do see some similarities:

6E.64.5C.79 is a byte level reversal of 79.5C.64.6E

Maybe that helps you to get further.