Don't we all hate that loud beep a ups makes when power goes? Don't we wish it can be softer instead of so annoying? Read on for a quick fix I usually so for all piezoelectric beepers. Open up and identify the beeper. It's easy to find. Circular black device as in the pic. Applying sound atte...
By: Mjtrinihobby
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from Instructables: exploring - technology - robots http://ift.tt/1O3ZFnK



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