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Here’s a really fascinating circuit that implements a combination lock using relays and logic gates. Even with the schematic and written explanation of how it works we’re still left somewhat in the ...

Padlocks are portable locking devices that we all learned about as kids to secure our school lockers, bikes, and other valuables. They come in an infinite number of configurations and are controlled ...

Putting a custom designed electronic lock on your space seems like a geek right of passage. For our latest workspace, we decided to skip the boring numbered keypad and build a custom RGB backlit ...

Finding and installing the right keyless door lock depends on whether you already have smart home security, your Wi-Fi ...

The tall black rectangle looked sleek (if huge) in person with a pocket-style grip and a rather sizable display on the ...