Keyestudio ESP32 - Project 22: Noise Meter; 1. Description; 2. Wiring Diagram; 3. Test Code

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ESP32 Starter Kit

8.5.23 Project 22: Noise Meter

1. Description

Arduino noise meter embodies the sound signal to a series of dots, which are converted into patterns displayed on dot

matrix.

2. Wiring Diagram

3. Test Code

The noise meter is able to detect the ambient noise.

keyestudio ESP32 Inventor Learning Kit

Project 22 Noisemeter

http://www.keyestudio.com

#include <LedControl.h>

int DIN = 23;

int CLK = 18;

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126 Chapter 8. Arduino Tutorial