DIY Secret Knock Detector lock is best use for Steampunk mechanical iris [Video]
August 3rd, 2010 link to (permalink)
Regular garage door openers are dull; why aren’t you using a knock-controlled mechanical iris to authenticate visitors instead? BFarn has been detailing his beautiful secret-knock detecting door project, which hides a tap-sensitive panel behind a huge Steakpunk-styled iris.
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