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Secret knock detector
blog.makezine.com - 11/3/2009
Secret knock detector
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RFID card readers becoming passé? Maybe what you need to guard the door to your high-tech lair is a secret knock detecting door lock . Using an Arduino and a bunch of parts found around the lab, Steve Hoefer built a device that unlocks your door when it receives a certain knock ...
Secret Knock Detecting Lock (video)
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youtube.com - 11/2/2009
Secret Knock Detecting Lock (video)
— youtube.com — Unlock your door with a secret knock. More information, source and schematics at http://grathio.com... (more) Secret Knock Detecting Lock (video)
Comments vote down MAKE Magazine found this 11/2/2009found this
Secret Knock Detecting Door Lock
grathio.com - 11/2/2009
Secret Knock Detecting Door Lock
— grathio.com — How many times have you seen a secret hideout with a secret knock?  It's a staple of... cheesy dramas, Saturday afternoon movies, and tree houses throughout the world.While working on another project I ran across the Arduino knock sensor ... (more) Secret Knock Detecting Door Lock
Comments vote down MAKE Magazine found this 11/2/2009found this
Knock-Detecting Door Lock Lets You Unlock with a Secret Knock
techeblog.com - 11/4/2009
Knock-Detecting Door Lock Lets You Unlock with a Secret Knock
— techeblog.com — Lost your keys and can't get into the house? Meet the knock-detecting lock. This contraption unlocks your... door with a secret knock to the "rhythm of your favorite song, morse code", etc. Video after the break. The widget will play back your knock ... (more) Knock-Detecting Door Lock Lets You Unlock with a Secret ...
Comments vote down GadgetReview found this 11/4/2009found this

Blog Reactions

Gizmodo:  Make Your Own Secret Knock Detecting Door Lock [DIY]

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Blog Reactions

Make Your Own Secret Knock Detecting Door Lock [DIY]
Gizmodo — ... around the lab. It works by keeping track of the time between a pattern of successive knocks. It's probably not the most secure way to lock a door, but Hoefer notes that there is a lot of room for improvement on this design. Besides making it small enough to actually fit in a doorknob, you could program it to accept a variety of knock patterns, including different knocks at different times of the day. Hit the link for instructions on how to build one yourself. [Grathio via Make] ...

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