Body Mass Index Calculator Watch Variant 31 Kit with Arduino Nano + LED
Body Mass Index Calculator Watch Variant 31 Kit with Arduino Nano and OLED — Build a Wearable Health Monitor
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Ever wondered how fitness trackers calculate BMI? With this kit, you'll assemble a wearable watch that lets you input height and weight with buttons and instantly displays your BMI and health category on an OLED screen. Designed for curious young minds aged 5-15, this project introduces electronics, coding, and health awareness in one afternoon.
What You'll Build
A fully functional BMI calculator wristband that responds to button presses, computes BMI from stored height and weight inputs, and classifies the result as underweight, normal, overweight, or obese—all on a crisp OLED display. It's a real-world wearable that demystifies health tech.
What You'll Learn
- How to interface an OLED display with Arduino Nano using I2C
- Reading multiple button inputs with pull-down resistors to avoid floating pins
- Writing C++ code for BMI calculation logic and health classification
- Assembling a wearable circuit on a breadboard and planning for a wrist-worn form factor
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Nano | 1 |
| 0.96in OLED | 1 |
| Tactile Button | 3 |
| 10kΩ Resistors | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 15 |
| 9V Battery Snap | 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
Perfect for CBSE Class 5-10 students diving into wearable tech for science fairs, ATL Tinkering Lab innovators, and young electronics enthusiasts attending summer camps. Even parents and educators looking for a guided, safe introduction to health-monitoring wearables will appreciate the step-by-step AI companion.
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 provides instant troubleshooting; you can also send a WhatsApp message for human backup and get a reply within hours.
Can I wear this watch after building it?
The breadboard circuit is not waterproof or rugged, but you can mount it on a wristband for demonstration and school exhibitions.
Does the kit include a battery for portable use?
The 9V battery snap is included; you need to provide a standard 9V battery to power the watch on the go.
Is coding experience required for this kit?
No, the AI companion provides pre-written code and explains each line, so even a beginner can upload and understand the logic.
Buttons enter height and weight. OLED shows BMI value and healthy range classification.
What's in this kit
- Arduino Nano
- 0.96in OLED
- Tactile Button x3
- 10kΩ Resistors x5
- 400-pt Breadboard
- M-M Wires x15
- 9V Battery Snap
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