Originally Posted by mister_e
There's still the option to use a PIC with 2 comparator and set their reference with resistors , trim pot OR HPWM. I like the HPWM stuff... full control of the beast... and when you want
Now you just need an amplifier/Microphone and poll the comparator output to know what's happen.
Sir, if this method is to be done, how should I place the microphone? front or facing left and right as said in the previous post?
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