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Secret knock detector
MAKE Magazine —
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 pattern. It works by counting the time between successive knocks, and can be re-programmed at the touch of a button.
Of course, this system is susceptible to a replay attack, because anyone can listen to the knock pattern and then know how to get in. If you are planning ...
Make Your Own Secret Knock Detecting Door Lock [DIY]
Gizmodo —
Hideouts can't be protected with a simple lock and key, those jobs require passwords or secret knocks. For the latter, you can go the extra mile and build a knock detector using a few basic pieces of equipment. Steve Hoefer's secret knock detector is little more than a piezo speaker, a tiny gear reduction motor, an Arduino and some PVC pipe—basically a bunch of stuff he had lying 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 ...
Secret Knock Door Lock Does Exactly As It Sounds (video)
GadgetReview —
There’s home made kit and then there’s HOME MADE KIT. The ‘Secret Knock Detecting Lock’ is a complete slam dunk. Built from an adrino board, pvc piping and a set of suction cups, the device attaches to the door and when it detects a preprogrammed knock (based on rhythm – it can be faster or slower) it activates its motor and physically turns the deadbolt. A set of LED lights indicate when a knock is detected and flashes from red to green when the correct secret key has been entered. To program the little doodad you simply press a red button and then knock out the key – I suggest doing this on a bathroom ...
The Secret Knock Detecting Door Lock
Geeky-Gadgets —
Wouldn’t it be cool if you could just knock on your front door, and have it open automatically without having to fumble around with your keys, then you might need one of these Secret Knock Detecting Door Lock’s which was made using an arduino, a motor and a piezo sensor.
Check out the video of it in action below, if someone just knocks on your door, it wont open, but if the use the secret knock which can be programmed into the gadget, the door will automatically unlock.
Very cool I think I may have to get one of these installed in the ...
Knock Lock - Unlock a Door with a Secret Knock
Hacked Gadgets - DIY Tech Blog —
Piezoelectric elements can be used to make sound or detect sound. Steve Hoefer has made a Knock Lock, which is a device that can listen to knocks on the door. If the sequence of knocks is the same as the recorded knock sequence it unlocks the deadbolt on the door. Steve was the guy who also made the Dice Reading Machine.
Via: Zedomax
"While working on another project I ran across the Arduino knock sensor tutorial. Sensing a single knock is a great little project for learning about microcontrollers, but what about sensing specific knocks? Seeeeecret knocks? And if we could ...
DIY Secret Knock Detector Grants You Entrance with the Right Cadence [DIY]
Lifehacker —
[image] [image] DIYer Steve Hoefer has been hard at work making every 6 year old's dream come true: A device that unlocks your door whenever someone seeking entrance taps out the secret knock. His device, which fits easily over the inside of your doorknob and lock, counts the time between successive knocks and can be reprogrammed to whatever knock-pattern you see fit. If the wrong series of knocks is tapped out, the device simply ignores it and waits for the appropriate pattern to allow entrance. Hit up Steve Hoefer's weblog Grathio for the full tutorial, or just stick to opening your doors by keyfob instead ...
The Knock-Detecting Door Lock is a fun way to secure your home
Newlaunches.com —
Knock-Detecting-Door-Lock.jpg This is just like the games we used to play as kids, on tree-houses with really sinister clubs. ‘Groupism’ was the way of life back then and rivals often popped in to spoil the fun. So we had a secret knock that matched the beats of ‘Hickory Dickory Dock’. It worked. No one but club members could understand it. Similarly, the Knock-Detecting Door Lock manages to keep your door sealed, with a secret lock that opens up only after it detects someone knocking in the exact pattern that has been recorded. [image] ...
Una puerta que se abrirá a los golpes
Gizmología —
Si bien este dispositivo es algo muy casero y el diseño es algo rústico, con un poco de ayuda de una empresa que se encargue de poner sus dólares en el proyecto podría mejorar y ser todo un éxito, a no ser que tus vecinos tengan memoria auditiva y recuerden cómo golpeaste tu puerta.
¿De qué hablo? La creación que pueden ver en el video fue desarrollada por Steve Hoefer y es una placa que se mantiene en la puerta gracias a algunos tubos de plástico que te permitirá entrar a tu casa o habitación con una combinación de golpes.
Obviamente se puede cambiar la ...
Knock Detecting Lock Transforms Your Door Into A Pattern Sensitive Surface, Opens With Secret Knock
ZiggyTek Blog —
[image] The secret clubchouse knock from childhood is back and it couldn’t be better. This new programmable lock allows users to open their door through a series of rythmic knocks, directly attached to the deadbolt on your door. The lock has a mechanism which records and saves patterns of knocking so that whenever you knock this pattern, only this pattern on the door (slowly or quickly), it twists open the lock for you to enter your home. The Knock Detecting Door Lock allows allows manual control so if you forget the secret knock, you can always open the door with the key. This is an amazing invention although there are some minor flaws. For example, ...
DIY Detector Opens Doors Upon Correct Knock
The Gadget Blog —
This is so cool! The brainchild of Steve Hoefer, the “Secret Knock Detecting Door Lock” attaches to a doorknob and its corresponding lock with suction cups. Upon detecting the correct knock pattern (by default, the classic shave and a haircut), it unlocks the door to grant access.
Even better, the knock detector is completely programmable. Changing the secret knock cadence is a simple matter of holding the red button while executing a new lock pattern, with a max of 20 knocks. The system simply detects the pattern, and not the tempo, providing allowance for users who knock slower or faster than usual. ...
The DIY secret-knock door lock
Crave: The gadget blog —
secret-knock door lock DIY'er Steve Hoefer used a piezo speaker, a tiny gear reduction motor, an Arduino, and a PVC pipe to make his secret-knock door lock. (Credit: Steve Hoefer)
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