Neural Network Digit Classifier Demo Kit with Arduino Mega
Neural Network Digit Classifier Demo Kit with Arduino Mega — Build a Working Handwriting Recognition AI
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Can an Arduino Mega run a neural network? Yes — and this kit proves it. You’ll assemble a 4x4 tactile button grid and TFT display into a system that recognizes handwritten digits with the same technology that powers industrial AI. Every part arrives pre-tested for seamless integration, so you can focus on the deep learning magic happening inside an 8-bit microcontroller.
What You'll Build
A self-contained digit recognition console. Press buttons on the 4x4 grid to draw a digit, and the TFT screen instantly shows the predicted digit and confidence percentage — all computed on the Mega without any external computer. Walk away with a physical AI demo device you can showcase at hackathons, college fairs, or your final project viva.
What You'll Learn
- Forward propagation of a trained multi-layer perceptron using fixed-point arithmetic on an AVR microcontroller
- Interface a 2.4″ TFT ILI9341 via SPI, optimize graphics for fast rendering of recognition results
- Debounce 16 tactile buttons in software and map the 4x4 grid input to 4-bit normalized feature vectors
- Quantize floating-point neural network weights and biases for a memory-constrained 8-bit platform
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | 1 |
| Tactile Button | 16 |
| 2.4in TFT ILI9341 | 1 |
| 10kΩ Resistors | 20 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| 9V Battery Snap | 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
B.Tech ECE and EEE students tackling final‑year projects or Smart India Hackathon challenges where AI on edge devices scores points. Also fits CBSE Class 12 physics and computer science students who want to go beyond theory, as well as IIT, NIT, VIT, and BITS Pilani participants looking for a compact demonstration of neural network inference. If you’ve ever wondered how deep learning gets squeezed onto tiny hardware, this kit delivers the answer in a hands‑on way.
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?
The AI companion covers every wiring, code, and troubleshooting step. If you prefer human help, WhatsApp our makers directly from the companion’s interface.
Do I need to train the neural network myself?
No — the kit includes pre‑trained, quantized weights ready to upload. The build focuses on deploying the network and understanding how forward propagation works on the Mega.
Can I change the network architecture or retrain with my own data?
Absolutely. The AI companion walks you through modifying the model and re‑quantizing weights, so you can experiment with different layer sizes or digit styles.
Does this device require a laptop to operate after programming?
No. Once the firmware is loaded, the console runs stand‑alone from a 9V battery — perfect for demo tables at hackathons or viva presentations.
Trained neural network on Mega classifies handwritten digits from 4x4 button grid. Shows accuracy.
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