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Trying to make a detector for the door buzzer

PostPosted: Wed Oct 10, 2018 2:28 pm
by perfessor101
Hello
I’m not sure the best way to proceed

I would like to make a detector for the door buzzer.
I tried with a microphone with a level trigger ... but it was too close to voice levels.
https://s.click.aliexpress.com/e/clwqpD20
I also have this microphone but I’m not sure of the sampling rate I’d need and if that would work with the esp8266
https://s.click.aliexpress.com/e/zHJ5C24

The buzzer is a “high” pitched trilling noise.

I’m not sure of the best way to tackle this.

Thanks for your time and help,
Bobby