View single post by Dr. Heinz Doofenshmirtz
 Posted: Jul 13th, 2015 03:23 AM
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Dr. Heinz Doofenshmirtz



Joined: Nov 17th, 2013
Location: Liberty, Missouri USA
Posts: 300
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I received this in the JAMECO electronics monthly E-mail
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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easy-laser-alarm-fig1.jpg