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 ... device you want. The Arduino sketch is also setup to give “hints” to the player by way of a status LED: fast blinking let ...

Project using Arduino UNO and a RFID reader module (EM-18) to control an LED and a Relay. Circuit schematic and Arduino Sketch (source code) are provided here. The reader transmits radio frequency ...

Patrick explains more about his latest hardware creation and its features : Meet the Arduino Compatible RFID Reader Module ... the blue LED will light up for one second, then turn off.

Security researcher [Fran Brown] sent us this tip about his Tastic RFID Thief ... AA batteries and a custom PCB using an Arduino Nano to interpret the reader’s output. When the reader sees ...