Sweat pH & Heart Rate Wearable Kit with Arduino Nano
Build Your Own Sweat pH Lactate Threshold Monitor with Arduino Nano
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
What if your workout shirt could tell you the exact moment you hit your lactate threshold? This kit turns that idea into a compact, strap-on wearable that continuously reads sweat pH, heart rate, and motion - logging the data so you can fine-tune your endurance training. Drawing on textile-based sensing and real-time analytics, you'll build a device that detects the pH drop linked to rising blood lactate, giving you a non-invasive window into muscle fatigue.
What You'll Build
You'll assemble a fully functional wearable logger that clips onto any athletic shirt. A conductive textile electrode contacts your skin, the analog pH module translates sweat acidity into Arduino-readable signals, while the MAX30102 captures heart rate and SpO?. The MPU6050 tracks movement to filter motion artifacts, and all sensor readings get stamped with an RTC and saved to microSD. A tiny OLED shows live pH, pulse, and alerts right on your wrist or waistband.
What You'll Learn
- Interfacing textile-based biosensors with an Arduino Nano for real-time pH measurement
- Fusing data from a MAX30102 pulse oximeter and MPU6050 accelerometer to remove motion noise
- Timestamping and logging multi-sensor streams onto a microSD card using DS3231 RTC
- Designing low-power wearable circuits with LiPo battery and TP4056 charge management
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Nano | 1 |
| Analog pH Module | 1 |
| MAX30102 | 1 |
| MPU6050 | 1 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| 0.96in OLED | 1 |
| 3.7V LiPo 1000mAh | 1 |
| TP4056 Module | 1 |
| 10k? Resistors | 5 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| Conductive Textile Electrode | 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 developing wearable health prototypes, B.Tech ECE/EEE students working on biomedical capstone projects, and athletes with a technical bent will find this kit invaluable. It's also well-suited for researchers at IIT/NIT/VIT labs exploring non-invasive lactate sensing or for Smart India Hackathon teams building real-time fitness analytics. If you've already built simpler Arduino projects and want to tackle sensor fusion and biometric logging, this is your next step.
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 kit QR code to open a chat session with the AI companion that knows every component and code line of this project. For persistent issues, our Bengaluru team replies over WhatsApp within hours.
How accurate is the pH measurement for sweat?
The analog pH module, when calibrated with the included buffer procedure, resolves changes of �0.1 pH units - enough to see the typical drop from ~6.8 to ~5.8 during high-intensity exercise. Post-processing in the companion guide helps you map that to lactate threshold zones.
Can I integrate the data with my own app?
Absolutely. Logged CSV files on the microSD can be imported into Python, MATLAB, or a mobile app via Bluetooth if you add a module (not included). The AI companion provides example parsing scripts and real-time streaming tips.
Do I need to be a programmer to use this kit?
You'll need familiarity with Arduino IDE and basic C/C++. The companion provides full code and pin mappings, so you can modify thresholds and display layouts even if you're not writing everything from scratch.
Seismology - Textile pH sensor in workout shirt detects sweat pH shift correlating with lactate threshold and muscle fatigue.
What's in this kit
- Arduino Nano
- Analog pH Module
- MAX30102
- MPU6050
- DS3231 RTC
- MicroSD Module
- 0.96in OLED
- 3.7V LiPo 1000mAh
- TP4056 Module
- 10k? Resistors x5
- 100nF Caps x10
- PCB Prototype Board x2
- Conductive Textile Electrode
- 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