I just received my RC522 RFID reader ... integer is the Arduino pin where we connect the button that is used the reset the alarm. The relay is connected to pin 7 and the active buzzer to pin 8. On the ...

By connecting multiple MFRC522 RFID readers to an Arduino Uno ... to configure the type and number of RFID cards required to trigger one of the Arduino’s digital pins, which usually would ...

Security researcher [Fran Brown] sent us this tip about his Tastic RFID Thief ... PCB using an Arduino Nano to interpret the reader’s output. When the reader sees a nearby card, the information ...

Electronics developer and Kickstarter serial entrepreneur Patrick Thomas Mitchell who we have featured numerous times here on Geeky Gadgets has once again taken to the crowdfunding website with ...