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sound activated Cold Cathode lights
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Sound activated personal alarm
Sound switch used to activate portable alarm (wireless door bell with switch input). This is used as a back up to more comple..
11/15/2010 5:01:00 PM
Sound Activated JouleThief
The popular Joule Thief circuit lights up if it is too noisy. Go to this link for a pdf of the schematic. home.comcast.net
11/1/2010 10:37:40 AM
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sound activated Cold Cathode lights My first computer build. AMD phenom II 3.10ghz black edition processor, Asus motherboard, 4GB DDR2, 500GB hard drive. Fatality 550 watt psu. sound activated cold cathode lights.
Date: Tuesday, May 25, 2010, Views: 29
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