The support structure mounts underneath the escutcheon plate for the lockset, keeping the main acrylic sheet flat against the door. An RFID reader and Arduino run the system, with a button inside ...

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 ...

[Pcmofo] has shared a well-built, well-explained example of how to implement an RFID key system ... door secure. The hack in this case is the electronics. Using an AVR ATmega168 running the ...