I demonstrate how to build an RFID-based access control system using Arduino! This project integrates an RFID reader (RC522), servo motor, 16x2 I2C LCD, three LEDs (Red, Yellow, Green), and a 2-pin ...

🔐 RFID-Based Access Control System A simple, Arduino Uno–based RFID access control prototype that reads an RFID tag (using the MFRC522/RFID-RC522 module), displays tag UID on a 16×2 LCD, and grants ...

Therefore, an effort was made to design a tool for “identification of impedance changes in metals using an Arduino Uno-based RFID RC522” which is relatively inexpensive and easy to carry.