Wireless Door Unlock - TI Low Power Challenge
May 4th, 2010 | by door |RITmdrc asked:
Our entry to the Texas Instruments Design MSP430 Ultra-Low Power Challenge (www.designmsp430.com). Using the new ez430-Chronos sport development watch, we created an electronic door unlock device. It communicates wirelessly to exchange a secret password (a sequence of taps on the watch’s 3-axis accelerometer). Project detail description and source code available here ziyan.info
commercial door
27 Responses to “Wireless Door Unlock - TI Low Power Challenge”
By Bank Wire on May 5, 2010 | Reply
How much money can you make until you have to start paying taxes?
By strangerd4nger on May 6, 2010 | Reply
I would love to see this on the market! But I could see its malfunctioning and then being locked out. But great idea.
By RITmdrc on May 9, 2010 | Reply
Not very secure if everyone knows your password. Alternatively, using voice fingerprinting would seem like a bit much for this microcontroller to handle.
By Business Man on May 11, 2010 | Reply
Not really being used.
By RITmdrc on May 12, 2010 | Reply
Presumably because you wear your watch all the time. Hopefully (if your sequence isn’t too long), the time it takes you to get through the menu system and do the tapping is less than the time required to get out your keys and open the lock.
By RITmdrc on May 13, 2010 | Reply
Then you don’t get in your door? Duh?
By Money Man on May 13, 2010 | Reply
Why is a boxing ring square?
By conrad2468 on May 13, 2010 | Reply
whats the range on the radio?
By davorb on May 15, 2010 | Reply
How does the encryption work? If it’s 128-bit it’s got to be symmetrical encryption (I hope). Do you use some kind of challenge-response?
By mostliberal on May 17, 2010 | Reply
Too tired after study. right… Sure it wasn’t “too drunk to handle keys”?
By TERRANCIO on May 20, 2010 | Reply
so, we could also use an R/C receiver and transmitter… right? lol
By Hafiz93 on May 22, 2010 | Reply
I wonder what if you go out and your battery die.
By fo3ps7b88qa on May 23, 2010 | Reply
Dude. That’s freakin’ AWESOME!.
The intuitive sequence coding looks so simple! If you were in & out a lot I can see it making your life much easier & faster.
Great work guys.
By ericparrey on May 25, 2010 | Reply
Nice. I’d like to see a voice activation option on the watch.
By CoreoBroomstick on May 26, 2010 | Reply
But will it play Doom?
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By ziyanjoe on May 29, 2010 | Reply
1. link for a blog post that contains the link for the source code can be found in the description
2. a audit system has been planned to come out before May
By ziyanjoe on May 31, 2010 | Reply
Thanks for your support!
By CoreoBroomstick on May 31, 2010 | Reply
Very well done guys!
I’ve been doing a bunch of developing with the Chronos watch myself. Such a powerful little tool, there’s so much you can do with it!
I was going to use the same application as you, but use it for my car.
I voted you up on the contest site.
By CoreoBroomstick on Jun 3, 2010 | Reply
@hornsupnet Then you use your keys…
By MarkusPea on Jun 4, 2010 | Reply
My sentiments exactly…also. Isn’t it so much easier to reach into your pocket and grab a key rather than use two hands to access a menu on your watch then tap in a sequence to get your door to unlock? Usually the best solution is often the simplest
By directive0 on Jun 6, 2010 | Reply
Cool build! Well done!
By hornsupnet on Jun 8, 2010 | Reply
What if u r too drunk to tap the code correctly?
By hmjgriffon on Jun 9, 2010 | Reply
This is the best we can do in 2010?! Makes me sad.
By squarechannel on Jun 12, 2010 | Reply
Awesome!!!
question(s):
1.- where can i download the file for this project???
2.- would it be possible to incorporate a data gathering memory to register which device unlocked the system, what time and how many times in a definite period of time??
Answers much appreciated.
By Tsylord on Jun 13, 2010 | Reply
Sweet, but what if you forget your Watch and key?
By kaiban42 on Jun 15, 2010 | Reply
thats cool… but no HD recording/encoding?