Body Composition Scale Kit with ESP32 + LED
Body Composition Scale Kit with ESP32 + LED — Track Weight, Estimate Usage & Trigger Reorder Alerts
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 smart container system that not only tells you the exact weight of health supplements, pantry staples, or medical supplies but also learns consumption patterns and alerts you when it’s time to reorder. This kit takes the abstract idea of home health monitoring and turns it into a tangible, wall-powered instrument you calibrate once and rely on daily. You’ll use four precise HX711 load cells under a custom enclosure, let the ESP32 process weight changes over time, and trigger a Wi‑Fi reorder alert before you run out.
What You'll Build
You’ll construct a fully enclosed scale that mounts under any flat container or series of small bins. The OLED displays real-time weight and estimated remaining quantity as a percentage. An accurate DS3231 RTC timestamps every measurement stored on the microSD card, giving you a consumption log. When the weight crosses a user-set threshold, the ESP32 sends an HTTP request to your configured endpoint—perfect for integrating with home automation dashboards or triggering a reorder email. Everything is powered by a reliable 5V supply stepped down by the LM2596, so it’s safe for continuous operation.
What You'll Learn
- Calibrate and combine four HX711 load cells for stable multi-point weight sensing
- Program the ESP32 to read sensor data, drive an OLED, and manage Wi‑Fi alerts simultaneously
- Implement time-stamped data logging to microSD using the DS3231 real-time clock
- Design a reorder trigger algorithm based on weight decline rate and user-defined minimums
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| HX711 | 4 |
| 1kg Load Cell | 4 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| 0.96in OLED | 1 |
| LM2596 Buck Converter | 1 |
| 100nF Caps | 10 |
| 4.7kΩ Resistors | 5 |
| PCB Prototype Board | 2 |
| Enclosure Box | 1 |
| 5V 2A PSU | 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 fits health-conscious makers and engineers building automated home inventory. It’s particularly valuable for B.Tech ECE and EEE final-year students prototyping IoT health devices, Smart India Hackathon teams focusing on sustainable home solutions, and professionals designing clinic or pharmacy stock monitors. If you’ve already worked with ESP32 basics and want to integrate sensor fusion with real-world alert systems, this project hits the sweet spot.
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 kit box to access the AI companion, which covers every wiring step, calibration routine, and code logic for this specific scale. If you need a human, message us on WhatsApp and we’ll reply within a few hours.
Can I use this scale for containers other than health supplies?
Absolutely. The load cells mount under any flat surface—grocery bins, craft supply trays, or even pet food containers. You can adjust the weight thresholds and alert endpoints in the ESP32 code.
Does the kit include everything to start building immediately?
Yes, you get the soldering iron, solder, all electronic components, and the enclosure box. You’ll only need a computer with USB and a Wi‑Fi network to program the ESP32.
How does the auto-reorder alert actually work?
After calibrating, you set a minimum weight threshold. The ESP32 continuously monitors, and when the weight drops below that limit for a configurable period, it sends an HTTP request to your chosen service—like IFTTT, Home Assistant, or a custom webhook—to trigger a reorder notification.
Health — HX711 load cells under containers track weight. ESP32 estimates quantity remaining and triggers reorder alert.
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