Secret Knock Detecting Door Lock
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With ismailsan s electronic lock the secret knock automatically unlocks the door.
Secret knock detecting door lock. By default the knock is shave and a haircut but you can program it with anything up to 20 knocks long. If a piezo speaker hears the right number of. Use your favorite song morse code whatever. 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. Press the button to record a knock pattern then test it by knocking. We use the arduino uno but any standard arduino is appropriate for this project. Press the programming button and knock a new knock and it will now only open with your new knock.
In this project i used an arduino uno a piezo speaker and a servo motor. Unlock the door with a secret knock. Protect your secret hideout from intruders with a lock that will only open when it hears the secret knock. In the old movies a little sliding door would open so the doorman could check you out and let you in.
If the sequence isn t recognized the system resets and listens for knocks again. If it hears the right number of knocks in the right cadence it triggers the motor to turn the deadbolt and unlock the door. A microphone okay really a speaker presses against the door and listens for knocks. Build this project at our next weekend long arduino workshop.
This is the changes that i ve made added a hall effect sensor to determine if the door is open or closed swapped the gear motor with a servo added a serial lcd feedback screen added a yellow led added a bunch of extra features. Some examples are pir based security system rfid based security system digital lock system bio matrix systems electronics code lock.
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