Greetings. I am working on a project where silence needs to be detected for a certain number of seconds (let's say 10) and then it activates a relay. There will be ambient noise like a relay and people talking in a room. When everything goes silent (Or the baseline of silence in the room) the timer …

Sound Module Silence

Wawa May 11, 2018, 3:00am 4

The analogue+digital version of that module has four pins.
OP posted a link to a 3-pin module.
Leo..

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