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 ...

Arduino RFID Access Control using a RC522 RFID reader with SPI interface on your Arduino You define a Master Card which is act as Programmer then you can able to choose card holders who will granted ...

Hardware Arduino Nano RC522 RFID (SPI) 4×4 Keypad IR sensor (vehicle detect) Servo motor (gate) Buzzer 16×2 I2C LCD (address 0x25) LEDs (Green/Red) Pin Configuration RC522: RST D9, SS/SDA D10, MOSI ...