I know many people have asked this before, but I still need help. RFID datasheet: http://www.parallax.com/Portals/0/Downloads/docs/prod/rf/28440-RFIDReadWrite-v1.0.pdf EM-4100 Card : http://www.parallax.com/Store/Accessories/CommunicationRF/tabid/161/ProductID/115/List/0/Default.aspx?SortField=Pro…

Arduino UNO-R3 + Parallax RFID Read/Write Module

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