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RC522 RFID-RC522 Switching SPI to UART interface or i2c ! POSSIBLE ! - Networking, Protocols, and Devices - Arduino Forum
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Amazon.com: HiLetgo RC522 13.56Mhz RFID RC522 RFID Reader 13.56mhz IC Card MFRC522 RF Module UART TTL Interface for Arduino : Electronics
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RC522 RFID-RC522 Switching SPI to UART interface or i2c ! POSSIBLE ! - Networking, Protocols, and Devices - Arduino Forum
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