How do I make a system where it sends me an alert when a wire is cut? Answered
I work for a non-profit in Mexico. We have a remote station with an antenna and computer equipment that I need to secure from people messing with the antenna on top (people taking it for metal recycling money is my main concern). I plan on putting a line or two of barbed wire lining the top of the building that houses the computer equipment inside.
However, because it's so remote from where we are generally (it's on top of a hill next to us), I need some kind of remote alert system so that I know if the barbed wire has been cut.
I saw a garage door monitor instructable using the parallax "Basic Stamp II" that I think I could modify for this purpose, but I figured this has been done before and their is probably a better way to do it.
I thought of several ways to detect that the wire was cut, like running a small current through it so that when the circuit is broken, it sends the alert (e-mail or something like that), but I don't know how to implement that.
It should be noted that the barbed wire is going to be on top of a 4 ft x 4ft building. There are no gates involved and it is a continuous wire (total 16ft long). I need to have a system that will tell me if any of the four sides gets cut.
I've included a basic layout to help visualize what I'm talking about.
Thanks for the help everyone. This is an awesome website.