[Andrea] just sent us this great student hack he made for his room. He’s constructed an Arduino keypad door lock — without using any proper fastening hardware! The entire build is made out of scrap ...

Locks come in a variety of types and designs to meet a wide range of security needs. While many locks use a simple key-and-tumbler design, some locks use technology that is significantly more advanced ...

A keypad is one of the most commonly used input devices in microprocessor applications. In a standard keypad wired as an X-Y switch matrix, normally-open switches connect a row to a column when ...

We independently review everything we recommend. We may make money from the links on our site. Learn more› By Doug Mahoney Doug Mahoney is a writer covering home-improvement topics, outdoor power ...

There are tons of smart locks on the market right now, but none seem to cater to apartment-dwellers or those who don’t want to rip out their existing deadbolt just to add a smart lock to their smart ...