Science

By Gareth Branwyn

Gareth Branwyn

Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. And he has a new best-of writing collection and “lazy man’s memoir,” called Borg Like Me.

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Kip Kay has a new video and Instructable on building a laser-beam-triggered alarm system. I don’t know that I’d want to rely on such a thing for actual security, but it might be a fun project nonetheless.

Protect Your Home with Laserbeams! – Link

8 thoughts on “Laser beam alarm system”

  1. heh

    Would be cooler with Altoids tins.

    I’d also like to see a battery pack and better mounting system for portability, so I could set these up in a hurry while on secret missions.

    Reply

  3. your alarm design wont work!!!! it will stop ringing after the laser beam is “uncut”. how can i make it ring continueously until i turn it off????

    Reply

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By Gareth Branwyn

Gareth Branwyn

Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. And he has a new best-of writing collection and “lazy man’s memoir,” called Borg Like Me.

View more articles by Gareth Branwyn