Arduino Security Alarm

IntroductionHello all, and welcome to my first project. I will be showing you in full detail how to make your very own intruder alarm. Read all the steps very carefully. Miss one little thing, and you can fry a circuit, or the code won't be correct. Check below that you have all of the necessary sup...
By: KNEXnCoding

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from Instructables: exploring - technology http://ift.tt/1OpZjLY