Secret Knock Detecting Door Lock

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Secret knock detecting door lock.

A microphone okay really a speaker presses against the door and listens for knocks. With ismailsan s electronic lock the secret knock automatically unlocks the door. If the sequence isn t recognized the system resets and listens for knocks again. Press the programming button and knock a new knock and it will now only open with your new knock.

Use your favorite song morse code whatever. Unlock the door with a secret knock. In this project i used an arduino uno a piezo speaker and a servo motor. Press the button to record a knock pattern then test it by knocking.

In this post let us build a secret knock detecting door lock using arduino which can detect the pattern of your knocks at the door and will only open the lock if the knocking pattern matches with the correct pattern. Protect your secret hideout from intruders with a lock that will only open when it hears the secret knock. The secret door knocker uses a piezo element to record and detect your secret knock pattern then turns a servo motor that you can connect to your door lock. Build this project at our next weekend long arduino workshop.

Secret knock detecting door lock. Hi all i ve done a bunch of modifications to steve hoefer s code for his secret knock detecting door lock. This started out as a bit of a joke project but turned out to be surprisingly accurate at judging knocks. If it hears the right number of knocks in the right cadence it triggers the motor to turn the deadbolt and unlock the door.

If a piezo speaker hears the right number of. In the old movies a little sliding door would open so the doorman could check you out and let you in.