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.
Secret knock detecting door lock here s a fantastic project using an arduino a motor and a piezo sensor which allows you to both record and detect knocking patterns to unlock a door รข the video below does a fantastic job of demonstrating how it works.
It s completely mobile and can be suction cupped to any dead bolt.
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.
If the precision is turned all the.
If it hears the right number of knocks in the right cadence it triggers the motor to turn the deadbolt and unlock the door.
Programming electronics academy 15 942 views 12 57.
Easy secret knock detector to trigger anything with only an arduino and a few cheap components duration.
If the sequence isn t recognized the system resets and listens for knocks again.
This started out as a bit of a joke project but turned out to be surprisingly accurate at judging knocks.
Make your own smart door lock.
Arduino servo motor knock lock tutorial.
Protect your secret hideout from intruders with a lock that will only open when it hears the secret knock.
Secret knock detecting door lock.