Tools supplies and skills.
Secret knock locking door.
Secret knock detecting door lock step 1.
If a piezo speaker hears the right number of.
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Unlock the door with a secret knock.
Agptek 60kg 130lbs holding force electric magnetic lock for door access control system electromagnet fail safe nc mode.
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 section assumes that you know how to connect your arduino microcontroller to you.
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This project will take several hours to complete.
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If the sequence isn t recognized the system resets and listens for knocks again.
With ismailsan s electronic lock the secret knock automatically unlocks the door.
In this project i used an arduino uno a piezo speaker and a servo motor.