Build a Noise Pollution Monitor with Arduino - Real-Time dB Meter with LCD & Over-Threshold LED Alert

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Transform a basic Arduino board into a portable environmental noise meter. This kit equips you with a sensitive MAX4466 microphone module to sample ambient sound, process the signals into decibel-like readings, and display averaged results on a clear LCD. When noise climbs above a preset threshold, a red LED lights up - instantly turning the device into a noise pollution alert system for science exhibitions, school labs, or smart city prototypes.

What You'll Build

You'll assemble a fully functional sound level meter on a 400-point breadboard. The MAX4466 captures live audio, the Arduino Nano reads peak amplitudes and computes an approximation of sound pressure level (dB). These values are refreshed on a 16x2 I2C LCD, providing real-time ambient noise readouts. Two red LEDs signal when the noise exceeds a configurable limit, making the meter usable for monitoring classroom chatter, traffic noise, or lab equipment.

What You'll Learn

• Interface analog microphones (MAX4466) with Arduino to capture sound signals
• Implement averaging algorithms to stabilise noisy analog readings
• Convert raw ADC values into approximate decibel levels through calibration
• Use I2C protocol to drive an LCD with only two data pins

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Students in CBSE Class 11-12 testing environmental science experiments, B.Tech ECE/EEE candidates building mini-projects on sound pollution monitoring, and participants of Smart India Hackathon creating IoT noise sensors will find this kit a ready-to-go prototyping platform. ATL tinkering labs can deploy it to teach analog signal processing, while college clubs at IIT, NIT, VIT, or BITS Pilani use it for campus noise mapping.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project - accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.