Voice Command Recorder Kit
Voice Command Recorder Kit — Build Offline Voice IoT with ESP32-S3
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Create your own voice-controlled switch that works without the internet. With this kit, you'll train an Edge Impulse keyword model on the ESP32-S3 to recognise commands like 'on', 'off', and 'dim' — then use the 5V relay to control lights or appliances. Perfect for CBSE students exploring AI-IoT or hobbyists prototyping smart home ideas.
What You'll Build
A standalone voice command system that responds only to your trained keywords. You'll wire the INMP441 mic to capture audio, deploy a TensorFlow Lite model, and trigger the relay to switch a connected load. The kit becomes a foundation for more advanced voice automation projects.
What You'll Learn
- Train a custom keyword spotting model on Edge Impulse
- Deploy tinyML models to ESP32-S3 using Arduino IDE
- Interface I2S digital microphone and relay module
- Build offline voice-controlled automation circuits
Kit Contents
| Component | Quantity |
|---|---|
| ESP32-S3 Dev Board | 1 |
| INMP441 I2S Mic | 1 |
| 5V Relay Module | 1 |
| LED Assorted | 3 |
| 220Ω Resistors | 3 |
| MicroUSB Cable | 1 |
| M-M Wires | 15 |
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 CBSE Class 11-12 students exploring AI and IoT integration, B.Tech ECE/EEE students prototyping smart home solutions, and hobbyists entering offline voice ML. It’s also a ready-to-demo project for Smart India Hackathon.
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 to chat with an AI companion trained on this exact kit, or drop a message on WhatsApp for real-person help within hours.
Can I use my own voice commands?
Yes, you can record your own keywords for training on Edge Impulse — the kit includes everything to capture samples and build a custom model.
Does this work without WiFi?
Absolutely — all voice processing runs on the ESP32-S3 offline. No internet needed after model deployment.
What appliances can the relay control?
The 5V relay can switch low-voltage devices like lights, fans, or small motors up to 250V AC/30V DC at 10A.
Voice — Edge Impulse keyword model on ESP32-S3 recognises on/off/dim commands and controls a relay — offline voice IoT.
What's in this kit
- ESP32-S3 Dev Board
- INMP441 I2S Mic
- 5V Relay Module
- LED Assorted x3
- 220Ω Resistors x3
- MicroUSB Cable
- M-M Wires x15
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