Closed-Loop Insulin Reminder System Variant 2 Kit with ESP32 + Motor
ESP32 Closed-Loop Insulin Reminder System — Correlate SpO2 & CGM to Compute Dosing Schedules
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
This kit lets you build a wearable prototype that reads oxygen saturation (SpO2), pulse, and a glucose proxy from a CGM analog input, then runs an algorithm to determine when an insulin dose might be needed. Instead of building a fully automated pump, you design the logic for a vibration-based alert that adapts to real physiological trends — a foundation for smarter diabetes management tools.
What You'll Build
A compact, battery-powered wrist-worn device with an OLED display. It acquires SpO2 and heart rate via the MAX30102, captures ECG with the AD8232 for heart rate variability context, and accepts a 0–3.3V analog signal simulating a continuous glucose monitor. The ESP32 fuses this data to compute a reminder schedule and triggers a coin vibration motor, while logging everything to a MicroSD card with RTC timestamps.
What You'll Learn
- Configure ESP32 for multi-sensor data acquisition: MAX30102 (I2C), AD8232 (analog), and CGM proxy input
- Implement digital filtering to clean PPG and ECG signals, extracting reliable heart rate and SpO2 trends
- Design a data logging system using DS3231 RTC and MicroSD for timestamped records, enabling offline trend analysis
- Program a closed-loop algorithm that correlates glucose proxy slopes with pulse variability to compute adaptive insulin reminder intervals
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
This advanced kit is built for final-year B.Tech ECE/EEE students tackling biomedical projects, health-tech researchers prototyping closed-loop wearables, and engineers competing in Smart India Hackathon who need a reliable biosensor platform. It’s equally useful in IIT / NIT / VIT / BITS research labs exploring non-invasive glucose-insulin management concepts.
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?
Your kit's AI companion, accessible via QR code, is trained on this exact project and can walk you through debugging. If that isn't enough, our WhatsApp support line is available during Indian business hours.
What CGM sensors can I connect to the analog input?
The kit accepts any 0–3.3V analog output from a glucose sensor module or simulator. You can use it with real CGM breakout boards or a function generator for testing the algorithm.
Is this kit medically certified?
No, it is strictly an educational and prototyping platform. The reminder system is not intended for actual insulin dosing decisions or medical use.
Can I modify the algorithm to trigger an insulin pump?
Yes, the I/O on the ESP32 can be extended to drive an external pump relay, but you would need to implement additional safety and feedback mechanisms. The companion AI includes extension ideas for such modifications.
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.
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