The digital pin 6 of the Arduino is linked to this transistor. You can connect the lock to either the MOSFET or the Relay, both of which can be programmed to turn on and off.

He used an Arduino, and multiplexed RGB LEDs with some digital potentiometers to create a color mixing keypad. Since we couldn’t fit the complete 4×4 keypad into a standard 2 gang wall box, we ...

Connect the power wire to the 5V pin on the Arduino, the ground wire to the GND pin, and the signal wire to one of the digital pins (e.g., pin 9). Next, download the custom script from the ...

The security flaws on this common hotel keycard lock are nothing short of face-palmingly stupid. Look closely at the picture above. This is a hotel room door swinging open. The device he holds in h… ...

This kit uses a CD-ROM drive and an Arduino board to build a clever robotic lock. This dude used a bolt to create the project and it's voice activated.

Two pushbuttons, a breadboard, a couple of resistors, and some wires are about all it takes to turn an Arduino unit into a stopwatch. Create a Keypad Lock. Put Arduino to work protecting your secrets.

Winner: Lock Your Drawer With an Arduino and RFID. Blake is in the midst of a home automation project. Needing a way to keep his 2-year-old out of his desk drawer full of electronic parts, Blake ...

Perhaps you could create an Arduino device to lean on the door right before the Arduino device bolts the door. It's not clear if the lock unlocks the door when you close that incognito browser.

Brocious found some very evident flaws in the locks security and did so with about $50 worth of easy-to-obtain materials. He used 1 Arduino Mega 128; 1 DC barrel jack, 5-mm outer diameter, 2.1-mm ...

A few weeks ago, renowned security expert / hacker / entrepreneur Samy Kamkar detailed a method that can be used to crack any Master Combination Lock by hand in just eight tries or less. Now, he's ...