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 ...

Makers, developers and hobbyists looking for a quick way to program RFID cards might be interested in a new Arduino compatible RFID reader development board called the RFID123 which has been ...

Meet the Arduino Compatible RFID Reader Module. It can hold card data for up to five cards, takes seconds to program, and holds card data in EEPROM memory, which means that the cards are saved ...

By connecting multiple MFRC522 RFID readers to an Arduino Uno, ... The ones linked are 4 channel, so you would need 2 for this circuit (SDA, SCK, MOSI, MISO & RST).

For the last few years, [Lt_Lemming] was the president of Brisbane’s hackerspace. Until several months ago, access to the local was done using 125KHz RFID tags and an Arduino board with a pro… ...