ESP32-C3 Wearable Health Tag Kit with ESP32 + BMP280
Build Your Own Wearable Health Tag with ESP32-C3: Continuous SpO2 & Altitude, No App Required
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Imagine a featherlight tag you clip to your jacket that silently streams your blood oxygen level and precise altitude — no phone app to install, no pairing rituals. This kit lets you assemble exactly that: a coin-cell-powered wearable using ESP32‑C3’s BLE advertising to broadcast health metrics continuously, perfect for high-altitude trek preparation, fitness tracking, or smart health monitoring projects.
What You'll Build
You will solder and enclose a thumb-sized device that reads SpO2 from the MAX30102 and atmospheric pressure from the BMP280, then packages the data into BLE advertisements that any modern smartphone or BLE scanner can read instantly. The final tag runs on a CR2032 coin cell, fits in an ABS case, and transmits updated vitals every second — a self-contained health beacon.
What You'll Learn
- Programming the ESP32-C3 to advertise custom BLE service data without a connection
- Interfacing I²C sensors (MAX30102, BMP280) and handling their real-time data
- Optimising power consumption for a coin-cell-operated wearable
- Designing compact wearables: soldering surface‑mount passives and integrating a battery holder
Kit Contents
| Component | Quantity |
|---|---|
| ESP32-C3 Super Mini | 1 |
| MAX30102 | 1 |
| BMP280 | 1 |
| CR2032 Holder | 1 |
| 4.7kΩ Resistors | 5 |
| 100nF Capacitors | 5 |
| PCB Prototype Board | 2 |
| ABS 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
This intermediate kit is ideal for CBSE Class 11–12 students exploring wearable health tech for science exhibitions, B.Tech ECE/EEE learners prototyping for Smart India Hackathon or biomedical projects, and hobbyists at ATL Tinkering Labs or IIT/NIT/VIT/BITS maker spaces who want a practical introduction to BLE beacons and sensor fusion.
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 open the AI companion trained on this kit; you can also send a photo of your board via WhatsApp and our support team will guide you within hours.
Do I really need no app to see the data?
Yes, the tag transmits standard BLE advertisement packets that any BLE scanner app (freely available on Android/iOS) can display without pairing — you'll see SpO2 and altitude directly in the scanner's raw data.
Can I modify the code to add more sensors or change advertising intervals?
Absolutely, the companion provides the full Arduino sketch with comments, so you can tweak advertising rates, add a sensor like temperature, or even trigger alerts based on thresholds.
How long does the battery last?
With smart deep-sleep and the 100nF decoupling caps already in the kit, the tag can run for 8–12 hours of continuous broadcasting on a fresh CR2032, depending on advertisement frequency.
MAX30102 SpO2 and BMP280 altitude in a tiny BLE tag. Broadcasts health metrics continuously. No app needed.
What's in this kit
- ESP32-C3 Super Mini
- MAX30102
- BMP280
- CR2032 Holder
- 4.7kΩ Resistors x5
- 100nF Caps x5
- PCB Prototype Board x2
- ABS Enclosure Box
- Soldering Iron
- Solder Wire
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