Make: Online : HOW TO - Make a doorknob touch alarm

HOW TO - Make a doorknob touch alarm

A MAKE reader sent in this handy doorknob alarm project - "A excellent analysis of a DIY circuit that buzzes when someone touches your doorknob. A lot better than a sock and it could be extended to ring your doorbell or worked into a home automation system." - Link.

Comments

Oldest comments listed first.

Posted by: aplumb on May 12, 2006 at 1:28 PM

Ok, you lost me. Better than a sock.?.

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Posted by: jbuell on May 12, 2006 at 11:10 PM

It's more clear in the actual post, but he's talking about the "busy signal" roommates have.

Reply to this comment

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