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| Joined: | Nov 17th, 2013 |
| Location: | Liberty, Missouri USA |
| Posts: | 300 |
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I can see a "ghost hunting" application for this device.
pretty easy, pretty cheap.
This link probably wont be valid forever, so I have included she schematic.
http://www.jameco.com/Jameco/workshop/JamecoBuilds/easy-laser-alarm.html?trk_msg=6RH6J2BJKC1KJ3A6VEUVHRJAU4&trk_contact=DNLGNJR2R5VFBCNTJM2KG6A3VS&utm_source=Listrak&utm_medium=Email&utm_term=Laser+Alarm&utm_campaign=JulyNewsletter2015
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