Secret Knock Locking Door
Unlock the door with a secret knock.
Secret knock locking door. This project will take several hours to complete. If a piezo speaker hears the right number of. Agptek 60kg 130lbs holding force electric magnetic lock for door access control system electromagnet fail safe nc mode. With ismailsan s electronic lock the secret knock automatically unlocks the door.
Tools supplies and skills. In this project i used an arduino uno a piezo speaker and a servo motor. Secret knock detecting door lock step 1. 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. 4 4 out of 5 stars 166. This section assumes that you know how to connect your arduino microcontroller to you. Free shipping on your first order shipped by amazon.
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.