The new PN532 library uses SPI HW implementation from official arduino SPI.h library The original PN532 library from seeedstudio uses a dedicated SPI SW implementation in PN532.h library The benefit ...
For starters, you need a pre-wired NFC RFID module as the key hardware. NFC and RFID projects have become a huge trend, but many modules are pricey for electronics hobbyists and need a complex setup.
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