Door Hacks

Secret Knock Detecting Door Lock

Secret Knock Detecting Door Lock

Here’s a fantastic project using an arduino, a motor, and a piezo sensor which allows you to both record and detect knocking patterns to unlock a door.  The video below does a fantastic job of demonstrating how it works: It’s completely mobile...
James Bond Style Wireless Door Lock

James Bond Style Wireless Door Lock

Remote locking is quite common for automobiles, not so common for doors.  This James Bond-ish home security system uses a coded signal from the wristwatch to the electronic box on the door to lock and unlock the door.  Far more stylish than a...