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atleast tell what r u actually planing of
there is a method to do this garbage collection. Cover the ckt with chalk and keep it in oven
would u want to identify some particular type(e.g claping of hands etc) of sound or will there be message if any type of sound is heard.
u can try readymade kit if u dont have time
why did u create this post actually for……….???????
ultra sonic sensors r more reliable
in parallel its possible but not in series. it also depents on how much current u r providing as well as ur configuration if all 60 led are to be blown at time the above condition is required but if else according condition r required also if u want blow all 60 leds at a time at minimum requirment u need multiplexing, but it will cause complex in ckt ant timing comes to the screen….