rfid tags
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Read and write RFID tags. RC522 module for Arduino.
Today I will tell you about the RC522 RFID module, based on the MFRC522 chip. Power supply 3.3 V, detection range up to 6cm. Designed for reading and writing RFID tags with a frequency of 13.56 MHz. The frequency in this case is very important, since RFID tags exist in three frequency ranges...