Sound Level Monitor with ESP8266 and ThingSpeak

This project is designed to monitor sound levels using an ESP8266 microcontroller and a sound sensor. The data is read from the sensor, converted to decibels (dB), and sent to ThingSpeak for visualization and analysis.

Table of Contents

• Introduction
• Components
• Setup
• Usage

Introduction

This project uses an ESP8266 microcontroller to measure sound levels with a sound sensor. The measured data is sent to ThingSpeak, an IoT analytics platform, where it can be visualized in real-time. The data includes the current sound level and the average sound level over the last minute.

Components

• ESP8266 Microcontroller
• Sound Sensor (e.g., Analog Sound Sensor)
• Breadboard and Jumper Wires
• Power Supply (e.g., USB cable)

Setup

1. Hardware Setup:

   • Connect the sound sensor to the ESP8266:
     • VCC to 3.3V
     • GND to GND
     • Analog Output to A0

2. Software Setup:

   • Install the Arduino IDE.
   • Add the ESP8266 Board to the Arduino IDE:
     • Open the Arduino IDE.
     • Go to File > Preferences.
     • In the "Additional Board Manager URLs" field, add: http://arduino.esp8266.com/stable/package_esp8266com_index.json
     • Go to Tools > Board > Boards Manager.
     • Search for "ESP8266" and install the latest version.
   • Install the following libraries from the Library Manager (Sketch > Include Library > Manage Libraries):
     • ESP8266WiFi
     • ThingSpeak

3. ThingSpeak Setup:

   • Create a ThingSpeak account and create a new channel.
   • Note the Channel ID and Write API Key.

4. Secrets File:

   • Create a secrets.h file in your project directory.
   • Add your WiFi credentials and ThingSpeak details to the secrets.h file:

     #define SECRET_SSID "your_SSID_here"
     #define SECRET_PASS "your_password_here"
     #define SECRET_CH_ID your_channel_id_here  // Numeric ID
     #define SECRET_WRITE_APIKEY "your_write_API_key_here"

Usage

1. Upload the Code:

   • Open the Arduino IDE.
   • Load the provided code into the Arduino IDE.
   • Ensure the correct board and port are selected (Tools > Board > ESP8266).
   • Upload the code to the ESP8266.

2. Monitor the Serial Output:

   • Open the Serial Monitor (Tools > Serial Monitor).
   • Set the baud rate to 115200.
   • Observe the connection status and sound level readings.

3. View Data on ThingSpeak:

   • Go to your ThingSpeak channel.
   • Observe the real-time data updates and visualizations.