Project Idea
Develop an IoT-based smart noise monitoring system that measures ambient sound levels in real-time and alerts users when noise exceeds safe thresholds. The system helps monitor noise pollution in urban areas, schools, hospitals, and industrial zones, promoting a healthier and safer environment.
 
Project Description
The IoT-Based Smart Noise Monitoring System uses a sound sensor module (microphone-based) connected to a Node MCU ESP32 microcontroller to measure ambient noise levels in decibels (dB). The collected data is transmitted to a cloud platform (Blynk) via Wi-Fi for real-time visualization and monitoring. Users can set noise thresholds and receive instant notifications or alerts when the levels are exceeded. An OLED display can be added for local sound level display. This system is suitable for smart city projects, workplace noise monitoring, and public safety applications.
 
Components List
Node MCU ESP32
Sound Sensor Module (Microphone with Amplifier)
OLED Display 
Power Supply Adapter
Jumper Wires
Breadboard
PCB
IoT Platform limited access (Blynk)
 
Features
Real-Time Noise Level Monitoring in dB
Wi-Fi-Based Data Transmission to Cloud Platform
Instant Alerts for Noise Threshold Exceedance
Cloud Dashboard for Live Visualization & Analysis
Compact and Portable Design for Indoor/Outdoor Use
Data Logging for Trend Analysis and Reports
User-Defined Alert Threshold Settings
Optional Local OLED Display for dB Levels
Energy-Efficient, Suitable for Continuous Monitoring
Scalable for Multi-Point City-Wide Deployments
 
Project Applications
Urban Noise Pollution Monitoring – Monitor noise levels in cities and public spaces.
Schools and Educational Institutes – Ensure noise-free environments in classrooms and libraries.
Hospitals and Healthcare Facilities – Maintain quiet zones for patient care.
Industrial Workspaces – Monitor and control workplace noise exposure.
Smart City Infrastructure – Integrate into smart urban environment management.
Public Parks and Recreational Areas – Monitor and maintain sound regulations.
Event Management and Auditoriums – Ensure sound levels stay within permissible limits.
Research & Environmental Studies – Data collection for sound pollution analysis.
DIY IoT Projects – Ideal for hobbyists building environmental monitoring systems.
Government Regulatory Bodies – Deploy in sensitive zones for real-time monitoring and enforcement.
 
Shipping Dimensions
Length: 15 cm
Width: 10 cm
Height: 8 cm
 
Weight: 1kg
 
Project Includes:
Fully assembled and tested circuit
Circuit diagram
Source code 
(For DIY KITs - only the components will be provided)
 
Project Types:
DIY KIT(Do IT YourSelf KIT) - We are providing only components in this kit for this project
DIY KIT with source code and circuit connections - we are providing source code, circuit connections and components in this kit for this project..
Breadboard based - We are providing fully assembled, tested and ready-made project using plug-n-play jumper wires and breadboard with all the other components, code & circuit diagram.
Soldering/PCB based - We are providing fully assembled, tested and ready-made project soldered on a PCB with all the other components, code & circuit diagram.
Note - For some projects the code & circuit diagram may not be provided and might have to be purchased separately
 
Notes -
All the products are made by LearnElectronics India and not for re-sale.
These project is a prototype project to show/present/explain and work like to real life product. It is not a product, if you need a ready-made product then reach out to us here.