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

Next time we’ll show you how to make the permanent version of the keypad, walk through the code for the Arduino, make the PC board, cut a custom wall plate, and install the lock strike.

So just like with open source software, people can and do make derivatives of Arduino boards or entirely new products powered by Arduino technology. Why is openness important in hardware?

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.

Arduino enthusiasts may be interested in a new gesture controlled Arduino door lock which has been created by Adham Negm and uses an Arduino Uno together with a servo motor to slide the bolt back ...

He has fashioned an Arduino-powered door bolt that locks itself whenever you open an incognito browser window. Always nice when a computer gives you a helping hand.

Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It's intended for artists, designers, hobbyists and anyone interested in creating ...

Makers and hobbyists that enjoy building Arduino projects, might be interested in this new open hardware and DIY robot kit called PopPet, which can be programmed using the Arduino platform.

The Arduino is a type of open source hardware that we covered in The Atlantic in January. "Using an Arduino is fairly straightforward: buy a board (ranging from about $19 to $65) and attach it to ...