Plug the RFID module into the breadboard with enough space around it. Connect the VCC pin to the Arduino's 3.3V (not 5V), and GND to the ground rail. For the data connections, wire SDA to Pin 10, SCK ...

The system uses a custom script that has been written and is available for download. The Arduino door lock project is a fascinating blend of hardware and software. The core component is the ...

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 ...

An RFID reader and Arduino run the system, with a button inside to unlock the door. But if power were to fail, you will still be able to get in or out manually. When you are using the electronic ...

[Shawn] tapped into that system by running some wires up into ... which clicks an accompanying relay that drives the locks. You may recall [Shawn’s] RFID phone tag hack from last month ...

When you think of Arduino projects, your mind likely goes straight to RFID door locks, weather sensors, or automated plant watering systems. While these are undeniably pretty cool projects ...

Often confused with Single-Board Computers, MCUs like the Arduino series are integrated circuits designed for specific circuitry projects rather than a multipurpose standalone system. However ...

Making your own security system isn't too hard, but if you'd like a super cheap and simple method, Instructables user deba168 shows how to make a wireless motion detector with an Arduino.