Passive Aggressive Strobe

A theoretical device to shine flashes of light at a neighbours windows, powered by energy harvested from their high powered sound system :)

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A parabolic dish (such as used for spying) is pointed at a source of noise, and focuses on to a piezo. The piezo charges a capacitor that switches a transistor when it reaches capacity and flashes a high power LED at the source of the noise. (see illustration) I don't know much about the required calculations, so i would be grateful if someone can suggest parts.

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mr.jb wrote 04/17/2015 at 04:30 point

Why not send an "echo" back

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