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555 Timer Annoying Beeper | PCB Design

555 Timer Annoying Beeper
Version 1 - Last update: Oct 4, 2015

This is a simple 555 timer circuit which produces a beep from the piezo speaker every half hour. Hide it in your nemesis's house to slowly drive them insane.

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Tags: small, beep, prank, simple, piezo, noise, SMD, Timer, 555, TL072
License: CC-BY-SA 3.0
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