Some examples are pir based security system rfid based security system digital lock system bio matrix systems electronics code lock.
Secret knock detecting door lock report.
Smart knock detecting door lock project using arduino uno.
In this project i used an arduino uno a piezo speaker and a servo motor.
The leds shown in figure 9 1 serve as indicators of your lock s status.
Watch any movie about the years of prohibition and you ll probably see character gain admittance to a speakeasy by using a secret knock on the door.
Abstractthe project idea was to build a knock detecting in building knock detecting door lock we useddoor lock which can identify the specific knocking micro controllers pattern detecting algorithms pattern and unlock the door if the pattern is touch sensor circuit and password detect system correct.
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.
When the correct sequence and strength of knock are regis tered the servo arm swings 90 degrees to unlock whatever it is set up with.
Secret knock detecting door lock using arduino duration.
Unlock the door with a secret knock.
The red led lights when the knocks are incorrect and the servo arm has not moved that is the box or door is still locked.
Arduino microcontroller up top and peeking out at the left is the button to program new knocks.
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.
This started out as a bit of a joke project but turned out to be surprisingly accurate at judging knocks.
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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.
Secret knock detecting door lock.
If a piezo speaker hears the right number of.
If the precision is turned all the.
Security is a major concern in our day to day life and digital locks have become an important part of these security systems.
