IoT based Decibel Meter with ESP8266 & Sound Sensor

In this project, we will make an IoT based Decibel meter with NodeMCU ESP8266 & Sound Sensor then monitor the sound level intensity on the Arduino IoT cloud.

 

Overview

 

Generally, the sound level meter is used to measure the sound intensity of the surroundings. Condenser microphone combines precision with stability and reliability, hence it is best for the decibel meter. This device is sometimes called SPL (Sound Pressure Level) Meter because the diaphragm of the microphone responds to changes in air pressure caused by sound waves.

 

Decibel meters are commonly used in studies for the identification of different kinds of noise pollution, especially for industrial, environmental, mining, and aircraft noise. This DIY project is helpful for monitoring loudness in dB.

 

In this IoT project, we will make a simple Decibel Meter using ESP8266 & Sound Sensor. We will also use a small 0.96” I2C OLED Display to visualize the noise intensity locally. The Sound Sensor will detect the sound and convert it into an analog voltage which is read by Nodemcu ESP8266. Then Nodemcu connects to WiFi Network and uploads the data to Arduino IoT Cloud. So, you can monitor those parameters remotely from anywhere in the world.

 

Before starting, you can check the previous post to get started with Sound Sensor:

 

1. Decibel Meter using Sound Module & Arduino with LCD Display

 

Components Required

 

Now in this tutorial, we’re using ESP8266 NodeMCU, 0.96”

 

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Done