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Topic: Project 12 / Knock Lock (Read 1 time) previous topic - next topic


Good morning,

I have one question about this project. How the piezo element responds to 5 kHz frequency waves ? We know that this project have:

// variables for the high and low limits of the knock value
const int quietKnock = 30;
const int loudKnock = 100;

So... how can we know how much we need kHz to reach like this 30 - 100 value ?

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