Our home security is a very important matter, as it helps to protect us from become the next target of the burglars, especially when we’re away from home!

Most people choose to purchase home security system or locks from the malls or stores, as they think it’s better to buy the locks than making it by ourselves.

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Well, it might be hard to believe that up to 70 percent of the home security system or locks were failed to function accordingly. It caused over millions of dollars being stolen all across the U.S.A. every single year!

Did you know that you could use a Classic Nintendo controller to lock and unlock your door easily? Yeah, it might sound like a fairy tales, but actually, you can definitely make it become a reality!

For your information, an Arduino reads the output from the Controller. It searches for a particular combination of buttons. Once the combination is entered, it sends a signal to eject a CD-ROM drive that pushes or pulls the lock.

NoKES, the short acronym for Nintendo Keyless Entry System will be blinking and lets you know that it’s an alert and keeping guard. If the user pressed the Start button on the controller, the arduino starts recording what buttons are pressed and converts them into a number and adds them together.

If you enter an incorrect combination, then the arduino activates an attached circuit and plays a loud sound. Otherwise, the arduino sends a signal to the CD-Rom to eject. It will lock and unlock the door according to the user’s need. [instructables]