This started out as a bit of a joke project but turned out to be surprisingly accurate at judging knocks.
Secret knock detecting door lock.
Easy secret knock detector to trigger anything with only an arduino and a few cheap components duration.
If you want more instructions than are listed here go here and read all of the steps see all the photos and enjoy.
November 02 2009 electronics problem solving software.
Secret knock detecting door lock.
This project was inspired from grathio.
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.
Programming electronics academy 15 942 views.
Secret knock detecting door lock.
Protect your secret hideout from intruders with a lock that will only open when it hears the secret knock.
For schematic and source code visit this link.
Some examples are pir based security system rfid based security system digital lock system bio matrix systems electronics code lock.
If the precision is turned all the.
I added some functions to the program.
It works very well.
Unlock your door with a secret knock.
The instructable is complete.