https://community.nxp.com/t5/NFC/RC522-NFC-reader-does-not-recognise-EV1-tags-anymore/m-p/657336#M1815 <HTML><HEAD></HEAD><BODY><P>hi, bro. i have this problem too.... <A class="link-titled" href="https://stackoverflow.com/questions/45855469/chinese-rc522-not-work-with-nxp-mifare-desfire-ev1" title="https://stackoverflow.com/questions/45855469/chinese-rc522-not-work-with-nxp-mifare-desfire-ev1">python - chinese rc522 not work with nxp mifare desfire ev1 - Stack Overflow</A>&nbsp;</P></BODY></HTML> Sun, 27 Aug 2017 17:46:06 GMT mikhaildzyk 2017-08-27T17:46:06Z https://community.nxp.com/t5/NFC/RC522-NFC-reader-does-not-recognise-EV1-tags-anymore/m-p/657335#M1814 <HTML><HEAD></HEAD><BODY><P>Hi! I am using the NXP RC522 reader with Mifare Classic EV1 1k NFC tags for my prototype. I have build a system that works perfectly.</P><P></P><P>Now I have replicated my electronic circuit using a new-ordered RC522 (ordered at the same place) and using the same software. This RC522 reader does not recognise my&nbsp;<SPAN>Mifare Classic EV1 1k NFC tags anymore. The reader does work as it does recognise the card and token that came with the reader.</SPAN></P><P></P><P><SPAN>My assumption is that my first used RC522 is a version 1.0 and the second RC522 used is a version 2.0, accoring to the data sheet&nbsp;<A class="link-titled" href="https://www.nxp.com/documents/data_sheet/MFRC522.pdf" title="https://www.nxp.com/documents/data_sheet/MFRC522.pdf">https://www.nxp.com/documents/data_sheet/MFRC522.pdf</A>&nbsp;the reader should still support my tags.&nbsp;</SPAN></P><P></P><P><SPAN>Can anyone help me analyse the problem and think of a solution? Is there something I can change in the library?</SPAN></P></BODY></HTML> Thu, 16 Mar 2017 12:20:47 GMT https://community.nxp.com/t5/NFC/RC522-NFC-reader-does-not-recognise-EV1-tags-anymore/m-p/657335#M1814 marleenvanberge 2017-03-16T12:20:47Z https://community.nxp.com/t5/NFC/RC522-NFC-reader-does-not-recognise-EV1-tags-anymore/m-p/657336#M1815 <HTML><HEAD></HEAD><BODY><P>hi, bro. i have this problem too.... <A class="link-titled" href="https://stackoverflow.com/questions/45855469/chinese-rc522-not-work-with-nxp-mifare-desfire-ev1" title="https://stackoverflow.com/questions/45855469/chinese-rc522-not-work-with-nxp-mifare-desfire-ev1">python - chinese rc522 not work with nxp mifare desfire ev1 - Stack Overflow</A>&nbsp;</P></BODY></HTML> Sun, 27 Aug 2017 17:46:06 GMT https://community.nxp.com/t5/NFC/RC522-NFC-reader-does-not-recognise-EV1-tags-anymore/m-p/657336#M1815 mikhaildzyk 2017-08-27T17:46:06Z