Noise Pollution Logger Kit with ESP32 + LED
Noise Pollution Logger Kit with ESP32 + LED
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Turn environmental noise into tangible data with this complete ESP32 logger. The INMP441 I2S microphone captures crisp audio, the SD card stores it as a 44.1 kHz WAV file, and the OLED displays real‑time status — everything you need for a school science exhibition or a smart city noise‑mapping pilot, without hunting down separate schematics.
What You'll Build
You will assemble a portable, battery‑ready decibel data recorder that starts and stops recording with two tactile buttons. The OLED shows file name, recording time, and SD card free space. Once built, you can walk through your neighbourhood, log noise samples, and later analyse the WAV files with any audio tool. It’s a self‑contained field instrument, not just a bench prototype.
What You'll Learn
- Configuring the ESP32 I2S peripheral to stream 24-bit audio from the INMP441 microphone
- Structuring and writing valid WAV headers with sample rate, bit depth, and data chunk size
- Handling an SPI‑connected microSD card with FAT32 file system for continuous data logging
- Orchestrating button inputs, OLED display updates, and background recording using FreeRTOS tasks
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| INMP441 I2S Mic | 1 |
| MicroSD Module | 1 |
| MicroSD Card 8GB | 1 |
| Tactile Button | 2 |
| 0.96in OLED | 1 |
| 4.7kΩ Resistors | 5 |
| 100nF Caps | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 20 |
| Micro USB Cable | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
CBSE Class 11–12 students building a physics project on noise pollution analysis will find the perfect data‑collection tool. B.Tech ECE/EEE undergraduates can use it for an environmental sensing mini project or a Smart India Hackathon prototype. ATL Tinkering Labs and hobbyists at IIT/NIT/VIT/BITS Pilani alike can rely on the breadboard‑friendly build for rapid experimentation.
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.
What if I get stuck during the build?
Open the AI companion through the QR code on the kit box, follow the interactive build guide, and if anything remains unclear, message us on WhatsApp — we'll respond with specific steps.
Can I measure noise in decibels with this kit?
The INMP441 outputs raw PCM audio. You can calculate RMS amplitude and approximate dB SPL using a reference level. The included code template shows how to extract loudness values for relative noise mapping.
Is this kit suitable for a CBSE science exhibition?
Absolutely. The project demonstrates real‑world data acquisition, I2S communication, and SD card logging, covering core physics and computer science curriculum topics while delivering a tangible, working model.
Do I need any soldering?
No soldering required. All connections are made on the included 400‑point breadboard using jumper wires, so you can assemble, test, and modify the circuit quickly.
Environmental — INMP441 I2S microphone records audio to SD card as WAV file at 44100Hz sample rate.
What's in this kit
Other projects you can build
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items