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 ...

By connecting multiple MFRC522 RFID readers to an Arduino Uno, ... “The RC522 has an operating voltage between 2.5V to 3.3V and hence is normally powered by 3.3V and should be used with 3.3V ...

Arduino, RFID, And You. 13 Comments . by: Jakob Griffith. October 7, 2010. Title: Copy. Short Link: Copy [Matt] has mixed up a batch of two RFID reading door lock systems.

The card reader can be used two further enhance both Arduino and Raspberry Pi projects and is now available from just C$21 or roughly £13 with worldwide delivery expected to take place during ...

To let its employees socialize from 300 miles away, ad agency Allen & Gerritsen hacked together an interactive game using RFID sensors, an Arduino, and some custom in-house development. Now ...