ESP32 Beamforming Noise Pollution Logger Kit — Steerable Mic Array

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

Environmental noise logging demands precision and directionality. This kit leverages four INMP441 I2S MEMS microphones and an ESP32 to implement a steerable delay-and-sum beamforming array. Point your mic in any direction — toward a traffic junction, an industrial boundary, or a residential zone — and capture focused acoustic data while suppressing off-axis noise. Industrial compliance officers, urban planners, and research scholars can finally log decibel levels with spatial accuracy instead of omnidirectional ambiguity.

What You'll Build

You will assemble a self-contained directional noise logger that computes real-time beamforming on the ESP32. The four synchronized microphone channels feed a DSP pipeline that delays and sums signals to create a virtual “zoom microphone.” Audio output through the MCP4728 DAC and PAM8403 amp lets you monitor in real time or log data for later analysis. The finished unit fits in a compact enclosure, ready for field deployment in urban sound mapping, industrial noise audits, or smart city pilot projects.

What You'll Learn

• Configuring four INMP441 I2S microphones on a single ESP32 with precise clock synchronization
• Implementing a delay-and-sum beamforming algorithm in Arduino or ESP-IDF to steer the array
• Real-time audio signal conditioning, DAC conversion, and amplification for live monitoring
• Designing a portable, battery-ready noise logging instrument with enclosure and output jack

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This advanced kit suits B.Tech ECE/EEE final-year students working on acoustic beamforming or smart city noise monitoring projects. Smart India Hackathon teams building real-time directional sound loggers will find everything pre-validated. Research groups at IIT, NIT, VIT, or BITS can extend the platform for wildlife bioacoustics or industrial noise mapping. ATL Tinkering Lab mentors guiding advanced IoT projects will appreciate the end-to-end build and the AI support system.

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.

Choose your assembly option:

• Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
• Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.