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2025-10-08 | By Ron Cutts License: General Public License Magnetic Magnetic / Reed RFID / NFC Arduino This tutorial shows how to connect the MFRC522 RFID module, check RFID card IDs, and control a magnetic solenoid lock. When a valid RFID card is detected, the door unlocks and a green LED lights up as a visual confirmation. Swipe the same card again to lock the door. Unauthorized cards are denied access.
As a journalist, you can create a free Muck Rack account to customize your profile, list your contact preferences, and upload a portfolio of your best work.
