Attached to a Raspberry Pi Zero W is a cost efficient MFRC522 NFC reader. The RPi simulates a virtual USB keyboard. An NXP Semiconductors NTAG216 RFID Tag stores a password, either in cleartext or ...
I just received my RC522 RFID reader and made this simple Arduino access control system that uses the reader, a buzzer for the alarm and a relay shield for the security system. The relay can be used ...
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