I just received my RC522 RFID reader and made this simple Arduino access control system that uses the reader, ... (on Arduino Uno): * MOSI: Pin 11 / ICSP-4 * MISO: Pin 12 / ICSP-1 * SCK: ... circuit ...

This article describes the construction of a simple Arduino RFID Access control DIY (Do It Yourself) Project using Arduino UNO and a RFID reader module (EM-18) to control an LED and a Relay. Circuit ...