A simple Arduino-based password door lock system using a 4x4 Keypad, SG90 Servo Motor, Buzzer, and LED. Secure your DIY projects with this beginner-friendly smart lock circuit.

About An Arduino-based RFID door lock system featuring an MFRC522 reader, servo motor, LEDs, and a buzzer for secure and customizable access control.

When reed switch is opened, pin 2 of Arduino goes high with the help of the pull-up resistor R2, and the alert signal is available through the piezo-speaker PZ1 (not an active piezo-buzzer). At the ...

Here is an ultra simple Arduino Night Alarm project wired around a handful of inexpensive and easily available components. One advantage of using Arduino as a security system is the flexibility!

One of the essential parts of any home security system is a door detector that lets you know when a door opens. Over on Adafruit, they show you how to build your own that hooks into IFTTT so you ...

By using open-source Arduino tools, security researchers are exposing security gaps in door-lock systems used by millions of hotels.

Many people would be tempted to write a really simple script that would just open the door and connect without any real thought about security. After all, this is a one-off obscure garage door opener.

Symbrant Technologies is now tasked with installing a system-wide remote door locking and camera system, a buzzer system, on more than 1,700 city school buildings.