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+-   DIY Microprocessor Sound Level Meter Demoed at MIT on Friday May 15 2009, @09:38PM

Submitted by on Friday May 15 2009, @09:38PM
hardhack
An anonymous reader writes "A Piezoelectric Sound Level Meter was demoed at MIT's Battle of the Bands last month, borrowing its display from the do-it-yourself USB LED Marquee that was the subject of a previous Slashdot story. This video tutorial describes in detail both the analog electronics plus the C code that runs the system. If this is your first experience at the intersection of digital and analog systems, don't be scared!"
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