There are many ways to lock a door. You could use a keypad, an RFID card, a fingerprint or ... But none of these may be as secure as [mircemk]’s Arduino-based door lock that employs a smartphone ...

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 ...

[Jason] really wanted to build an RFID ... Arduino triggers a relay which can then be used to control just about anything. In this case, [Jason] plans to use it to control his garage door. The ...

Using a little Arduino programming the ... “Last year I’ve made two door lock projects. One was the keypad project and the second one was an RFID door lock project each with a 3D printed ...