4- in 1 DIY Kit- using components

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HOW TO USE AN ELECTRET MIC

Read about 4- in -1 DIY KIT: http://www.buildcircuit.com/4-in-1-diy-kit-dark-sensor-latch-circuit-astable-multivibrator-and-clap-switch/

4 in 1 Kit kit

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From Schematic to PCB Production, Just Need One Tool - EasyEDA
Free Circuit Design Software:  learn to use Editor quickly and easily

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