Wrist Pulse Oximeter Kit with ESP32 + Motor
Build a Personalized Insulin Reminder Wristband with ESP32, MAX30102, and Haptic Motor
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
The silent burden of diabetes management often falls between glucose readings. This kit turns an ESP32 into a wrist-worn companion that reads MAX30102 SpO2, accepts a CGM analog proxy, and schedules insulin reminders on a vibrating motor. Build a device that learns your body’s rhythm and prompts action before you feel symptoms.
What You'll Build
You'll assemble and program a compact wristband that continuously samples pulse oximetry and ECG-derived heart rate via MAX30102 and AD8232, while monitoring an analog input meant for a CGM proxy signal. Data is stamped with the DS3231 RTC and logged to a MicroSD card. A vibration motor delivers discreet reminders when preset thresholds suggest insulin timing, turning raw biometrics into a personal health feedback loop.
What You'll Learn
- Fusing multiple biomedical sensor streams (SpO2, ECG, and analog glucose proxy) into a single correlation algorithm
- Reading and conditioning analog signals from a simulated continuous glucose monitor with precision filtering
- Implementing an adaptive insulin reminder scheduler based on heart rate variability and oxygen saturation trends
- Integrating a real-time clock, microSD logging, and haptic feedback to create a standalone wearable without a phone
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| MAX30102 | 1 |
| AD8232 ECG Module | 1 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| Coin Vibration Motor | 1 |
| 0.96in OLED | 1 |
| TP4056 Module | 1 |
| 3.7V LiPo 1000mAh | 1 |
| LM2596 Buck Converter | 1 |
| 100nF Caps | 10 |
| 4.7kΩ Resistors | 5 |
| PCB Prototype Board | 3 |
| 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
Engineers and tinkerers who’ve grown past prototyping and want a meaningful biomedical project. It’s ideal for B.Tech ECE students exploring medical IoT, Smart India Hackathon teams building non-invasive glucose monitors, or post‑graduate researchers prototyping wrist‑wearables. If you’ve ever wondered how to turn a MAX30102 into a companion that reminds you about insulin, this is your platform.
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 open an AI‑powered guide that walks you through each connection and code block. You can also message us on WhatsApp for a hands‑on review.
Can I use a real CGM sensor instead of the analog proxy?
Yes — the input pin accepts a 0–3.3V analog signal, so any CGM with analog output can be connected after verifying voltage levels. The included filtering network prepares you for typical medical‑grade signals.
How does the insulin reminder schedule get computed?
The ESP32 code template logs SpO2, ECG‑derived HRV, and the glucose proxy at intervals set by the DS3231. You’ll train a simple threshold‑based algorithm; when SpO2 or HRV trends cross safety corridors, the motor vibrates according to a pre‑set reminder pattern you define.
Is this meant to be worn continuously?
With the 1000mAh LiPo and TP4056 charging circuit, you can test extended wear. The enclosure is compact but not waterproof — treat it as a functional prototype for development and data collection, not a commercial medical appliance.
Health Monitoring — MAX30102 SpO2 + CGM analog input correlate glucose proxy with pulse to compute insulin reminder schedule.
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