AI Genre Classifier Audio Node Kit with ESP32 + LED
Build a Real-Time Edge AI Genre Classifier with ESP32 and LED Feedback
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Train a convolutional neural network on spectrograms, then deploy it to an ESP32 that listens through an I2S microphone. The board classifies a 3-second audio clip into genres like classical, rock, or jazz and lights up a colorful LED ring — all without ever touching the cloud. Perfect for audio engineers exploring edge AI, this kit gives you the hardware and AI companion to build a standalone music intelligence node.
What You'll Build
A standalone audio classification device that captures 3-second sound samples, computes Mel-frequency cepstral coefficients (MFCCs) in real time, runs a TensorFlow Lite model to predict the genre, displays the result on an OLED screen, and drives a 12-LED WS2812B ring with genre-specific color patterns. The finished unit sits in a sleek enclosure and works entirely offline.
What You'll Learn
- Recording high-quality audio with I2S MEMS microphones on ESP32
- Extracting spectral features (MFCCs) from audio signals for machine learning
- Training and converting a TensorFlow Lite model for on-device inference
- Interfacing OLED displays and addressable LEDs with embedded systems
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| INMP441 I2S Mic | 1 |
| MicroSD Module | 1 |
| MicroSD Card 8GB | 1 |
| 0.96in OLED | 1 |
| WS2812B 12-LED Ring | 1 |
| 470Ω Resistors | 5 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| 5V 2A PSU | 1 |
| Enclosure Box | 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
Ideal for final-year engineering students in ECE/EEE at NITs, IITs, and VIT, as well as working engineers exploring Edge AI, and Smart India Hackathon teams needing a ready-made audio intelligence node. ATL Tinkering Lab mentors will also find it a robust platform to teach embedded machine learning.
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?
Our AI companion provides step-by-step troubleshooting, and you can reach our WhatsApp support for real-time help.
Do I need prior experience with TensorFlow?
Basic familiarity helps, but the AI companion walks you through model training on your laptop and exporting to TensorFlow Lite. You'll learn along the way.
Can I modify the model to classify my own audio categories?
Yes, the companion includes a retraining module; you can record new audio clips and adapt the model to your custom genres.
Is soldering required for this kit?
Yes, this is an advanced soldering project. The kit includes a soldering iron and wire, and the PCB prototype boards allow you to assemble the circuit permanently inside the enclosure.
ESP32 samples 3-second audio clips. Edge ML model classifies genre from spectral features without cloud.
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.
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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