MFRC522 RFID Soldered board Arduino library allows for easy RFID identification on microcontrollers. At Soldered, we design and manufacture a wide selection of electronic products to help you turn ...

Arduino UNO/Nano/Mega operates at 5V logic. However, the MFRC522 works at 3.3V logic level, and is not 5V tolerant. If using one of these microprocessors: The solution to both a.) and b.) is trivially ...