http://www.instructables.com/id/How-To-Make-an-RGB-combination-door-lock/
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 keypad powered by an Arduino. Instead of typing in numbers, your password is a unique set of colors. In t…
By: kartikaa23