Visit the New Technabob Shop!Get Technabob in Your Mailbox! Join our Mailing List! | Follow Us: Facebook | Twitter
Awesomer Media Sites: THE AWESOMER | MIGHTYMEGA | 95OCTANE
subscribe to our rss feedsubscribe via e-mailfollow technabob on twittertechnabob facebook fan pageGoogle+follow us in feedly
Follow Us:

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

by Lambert Varias

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]




Comments are closed for posts older than 90 days.

Our Latest & Greatest Posts...

Micro LEGO Computer Has Stackable Modules: NUCs and Bricks

Micro LEGO Computer Has Stackable Modules: NUCs and Bricks

Gnarbox Portable Video Editing Computer Turns the iPhone into a Dumb Terminal

Gnarbox Portable Video Editing Computer Turns the iPhone into a Dumb Terminal

Deal: Coding for Entrepreneurs Bundle

Deal: Coding for Entrepreneurs Bundle

Dancing Baby Groot Mug Wants Your Coffee Black

Dancing Baby Groot Mug Wants Your Coffee Black

Yaskawa Motoman Industrial Robot Cooks an Egg Sandwich

Yaskawa Motoman Industrial Robot Cooks an Egg Sandwich

Win Prizes in the Technabob Shop

More from Awesomer Media...

The Awesomer Logo MightyMega Logo 95octane Logo
discussion by