X

This website uses cookies.

This website uses cookies to improve user experience. By using our website you consent to all cookies in accordance with our Cookie Policy.

I agree
Learn More
Great Geek Gifts in the Technabob Shop!Get Technabob Daily: Join our Mailing List! | Follow Us: Facebook | Twitter
AWESOMER MEDIA SITES: THE AWESOMER | MIGHTYMEGA | 95OCTANE
Cool Gadgets, Gizmos, Games and Geek Stuff on Technabob

DIY Secret Knock Lock: Knock, Knock. Who’s There?

by Lambert Varias
Advertisement

One of inventor Steve Hoefer’s favorite creations is his knock-activated lock: a lock that only opens if you enter the correct knock sequence. Steve says he’s built the lock a dozen times. Instead of becoming increasingly complex, his latest build is actually easier to put together compared to its predecessors, thanks to a couple of Adafruit products.

knock-lock-by-steve-hoefer-and-adafruitzoom in

This build uses Adafruit’s piezoelectric sensor, solenoid lock and mini microcontroller. You can install the lock on any wooden drawer or door that’s at least 2 1/4″ deep.¬†Once installed, you simply record your secret knock, and the device now knows to only unlock if the same knock is repeated.

Knock twice on your browser and head to the Adafruit blog for Steve’s instructions, parts list and Arduino code.

[via Boing Boing]

Deals in The Technabob Shop



Advertisement

More from Awesomer Media...

Eclectic Method Cooks up an Awesome Fifth Element Remix

Eclectic Method Cooks up an Awesome Fifth Element Remix

The Batmobile Almost Had a Cameo in Cars 3

The Batmobile Almost Had a Cameo in Cars 3

DIY Cardboard Glock

DIY Cardboard Glock

Ninja Cat Moves

Ninja Cat Moves

Hennessey Venom F5 Aims for 300 mph

Hennessey Venom F5 Aims for 300 mph

2018 Camaro ZL1 1LE Is the Fastest Camaro Ever Around the Ring

2018 Camaro ZL1 1LE Is the Fastest Camaro Ever Around the Ring