Pedro Santos

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9 years, 8 months ago.

non-recognition of the tag (white card) - why?

hi I tested the code and it works RFID tag blue (key ring), but with the card not working white, not recognize it, know how to answer me why?

Greetings, Pedro Santos

Question relating to:

Last updated: 06 Jun 2014
RFID-RC522 code for testing a cheap 13.56 MHz module with the Nucleo F401RE. Based on the MFRC522 code by Martin Olejar. f401, Nucleo, RC522, RFID

1 Answer

Thomas Kirchner
9 years, 8 months ago.

Pedro, I tried only one white card once and it worked. I work with the blue key rings, too, and have a couple of dozen that all work fine. Sorry I can't help other than the obvious suggestion that maybe there's something wrong with the card. Best, Thomas

Accepted Answer

Thanks for the info, I will order another card to test.

Thank you Thomas :D

Greetings, Pedro Santos

posted by Pedro Santos 20 Mar 2015