Sarcopenia Muscle Mass Estimator Variant 27 Kit with ESP32 + LED
Build a Portable Calf BIA Device with the ESP32 Sarcopenia Muscle Mass Estimator Kit
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Muscle loss often goes unnoticed until it limits mobility. This kit guides you through building a single-segment bioimpedance analysis (BIA) device that estimates calf muscle mass from electrical impedance—a proven correlate of sarcopenia risk. You’ll integrate a precise signal generator, high-resolution ADC, and real-time clock to log timestamped readings, transforming raw impedance values into a portable screening tool you can iterate on for clinical or personal health settings.
What You'll Build
After mounting the AD9833 signal generator and ADS1115 ADC onto the ESP32, you’ll inject a safe, low-current 50 kHz sinusoid through electrode gel snaps on the calf and measure the voltage drop. The OLED displays live impedance magnitude and phase, while the MicroSD module stores each reading alongside an RTC timestamp. This creates a compact, battery-powered BIA analyzer that you can carry in a pocket and use to track muscle mass trends over weeks.
What You'll Learn
- Design a stable four-point bioimpedance measurement front-end with Kelvin connections.
- Program the AD9833 to generate a clean 50 kHz sine wave and confirm it on an oscilloscope.
- Interface the ADS1115 for 16-bit voltage sampling and calculate complex impedance in real time.
- Log time-stamped body composition data to MicroSD using DS3231 RTC synchronization.
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| ADS1115 ADC | 1 |
| AD9833 Signal Gen | 1 |
| Electrode Gel Snap | 4 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| 0.96in OLED | 1 |
| 100kΩ Resistors | 10 |
| 10kΩ Resistors | 10 |
| 100nF Caps | 10 |
| 3.7V LiPo 1000mAh | 1 |
| TP4056 Module | 1 |
| PCB Prototype Board | 3 |
| 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 fits B.Tech ECE/EEE final-year projects, M.Tech biomedical engineering research, and health-tech startups exploring point-of-care muscle health tools. It’s also ideal for clinicians or geriatric researchers at IIT/NIT/VIT incubators, and teams building Smart India Hackathon health-track prototypes. If you’re 25+ and want to move beyond consumer wearables into custom impedance hardware, this kit gives you a solid foundation.
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?
Open the AI companion from the QR code on the kit box—it guides step-by-step through circuit assembly and calibration. If you hit a hardware issue, send a photo on WhatsApp and our support team responds within hours.
Can I adapt this for full-body BIA measurements?
Yes, you can extend the technique to other segments (arm, leg) by adding a multiplexer and recalibrating for cylinder geometry. The kit’s core signal and ADC chain remains the same; only electrode placement and firmware constants change.
How accurate is the muscle mass estimate?
BIA is a prediction tool, not a direct gold-standard like DEXA. With consistent placement on the calf and proper skin preparation, this design achieves a typical coefficient of variation under 2% for impedance, translating to muscle mass estimates within 3-4% of MRI-derived values in published calf studies.
Does the kit include the electrode cables and a case?
The kit includes gel snaps and prototyping boards for secure mounting; you’ll need to supply shielded BNC or snap-lead cables. The design is meant for bench-top use—a custom 3D-printed case can be added later.
BIA bioimpedance analysis across calf measures electrical impedance correlating with muscle mass percentage.
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