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Secret Knock Lock [Project]
posted January 17 2014 11:12.52 by spic0m

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.

[Link: technabob]

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