Noise Pollution Logger Advanced Kit with ESP32 + Relay
Noise Pollution Logger Advanced Kit with ESP32 + Relay — Four-Channel Voice Control Without Cloud
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Build a noise-activated relay controller that responds to Hindi and English voice commands, all processed locally on the ESP32-S3. No internet? No problem. This kit turns speech into action, letting you switch appliances, trigger alerts, or log noise data right from your workbench.
What You'll Build
You'll construct a standalone device that listens for specific wake words like "light on" or "बं�� करो" and activates one of four relays. The system includes an OLED display for real-time feedback and works entirely offline, making it perfect for privacy-conscious home automation or environmental logging projects. Once built, you can deploy it anywhere to monitor noise levels and control devices with your voice.
What You'll Learn
- Train a local keyword spotting model (WakeNet) on ESP32-S3 for multilingual voice recognition
- Interface an I2S MEMS microphone and extract audio features for noise level classification
- Control high-current relays safely using flyback diodes and transistor drivers
- Design a physical prototype on a PCB board, soldering components and wiring for a permanent installation
Kit Contents
| Component | Quantity |
|---|---|
| ESP32-S3 Dev Board | 1 |
| INMP441 I2S Mic | 1 |
| 4-ch Relay Module | 1 |
| 0.96in OLED | 1 |
| 1N4007 Diode | 5 |
| 4.7kΩ Resistors | 5 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| M-F Wires | 20 |
| 5V 2A PSU | 1 |
| Soldering Iron | 1 |
| Solder Wire | 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
This kit is ideal for ambitious CBSE Class 11-12 students building science fair projects, B.Tech ECE/EEE undergraduates tackling Smart India Hackathon challenges, and ATL Tinkering Lab mentors looking for an advanced environmental monitoring solution. If you're at IIT, NIT, VIT, or BITS and need a fast, reliable project that demonstrates edge AI and IoT, this kit delivers.
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?
Scan the QR code on the box to access the AI companion; it's trained on this exact kit. If you need human help, our WhatsApp support responds within hours.
Can I add more languages to the keyword detection?
Yes, WakeNet supports training custom keywords; you can expand to any language by recording new samples and retraining the model on the ESP32-S3.
Is soldering experience required?
The kit includes a soldering iron and solder wire, and we recommend basic soldering knowledge. The AI guide provides step-by-step instructions for the prototype board.
How is this different from a cloud-based voice assistant?
Unlike Alexa or Google Assistant, this device processes all voice commands offline on the ESP32-S3, ensuring total privacy. No data leaves your network.
Environmental — WakeNet detects keywords in Hindi and English to control four relay channels without any cloud service.
What's in this kit
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.
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