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Cold caller alarm
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Ever had one of those cold calls saying, "your internet will be discontinued unless you give me all your hard earned…
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- Printables
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- Electronics
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- Creative Commons — Attribution
Ever had one of those cold calls saying, "your internet will be discontinued unless you give me all your hard earned cash", Well I get a lot of these scum bags so this is a little alarm made out of a buzzer, led, resistor, push button and a battery that will at least piss them off.
I should have taken an image before hot gluing in place, sorry, but the resistor is in the purple heat shrink and you should be able to work this out from the diagram.
Have fun.
Category: Electronics