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Distant Object Detection
Laser powered burglar alarm
Super Easy Laser Trip Wire / Alarm / coilgun switching
Laser Tripwire Alarm
DIY Hacks and How Tos
Laser Surveillance System for under $20
Hack Your Snap Circuits With Frickin' Laser Beams! Build a Laser Tripwire and Alarm
Laser Shooting Range (laser gun+target)
Laser Beam Alarm System
Simple Arduino laser alarm
Mike X yt
Send Music over a Laser Beam
Posted:Apr 5, 2011
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