ESP32 Spectral Soil Analyser Kit with ESP32 + Sensor
Build a Cloud-Connected Soil Spectral Analyser with the ESP32 for Organic Matter Monitoring
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Take spectral soil analysis out of the lab and into the field. This kit uses the 18-channel AS7265x sensor to capture soil reflectance across visible and near-infrared bands, processes the data with an ESP32 to compute organic matter index, and pushes results to a cloud dashboard — all in a solar-powered enclosure you build yourself.
What You'll Build
You’ll assemble a portable instrument that illuminates soil, measures reflected light at 18 precise wavelengths, and displays real‑time organic matter estimates on an OLED. The device logs time‑stamped spectra to a MicroSD card and uploads summaries to the cloud, giving you a continuous soil health record for long‑term site monitoring.
What You'll Learn
- Calibrate a multi‑spectral sensor specifically for soil reflectance using known reference targets
- Program the ESP32 to compute normalized organic matter index from 18‑band data
- Store time‑stamped spectral records on MicroSD and transmit to a cloud platform via HTTP
- Design a solar‑powered field deployment with battery management and weatherproofing
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| AS7265x Spectral Sensor | 1 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| LM2596 Buck Converter | 1 |
| 0.96in OLED | 1 |
| 4.7kΩ Resistors | 5 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| Waterproof Enclosure | 1 |
| Solar Panel 6V 2W | 1 |
| TP4056 Module | 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
Designed for advanced makers and students – B.Tech ECE/EEE undergraduates building capstone projects, Smart India Hackathon teams tackling agricultural challenges, ATL Tinkering Lab mentors running soil science workshops, and researchers at IIT/NIT/VIT/BITS prototyping spectral sensors. It bridges electronics, IoT, and agritech in one deployable instrument.
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 inside to talk to your AI build companion trained on this kit’s exact wiring and code. WhatsApp support is also available same-day.
Can this kit measure NPK levels directly?
The AS7265x captures spectral reflectance which correlates strongly with soil organic matter. Direct quantification of NPK requires calibration with known samples, which the AI companion guides you through.
Does the kit require a lab for calibration?
No. We provide pre-characterized baseline reflectance values for typical Indian red, black, and alluvial soils so you can field-calibrate using the OLED interface.
Is the solar panel sufficient for continuous field use?
Yes. The 2W panel charges a Li-ion battery via the TP4056, providing 3–4 days of autonomous operation under typical Indian sunlight conditions.
AS7265x 18-band spectral sensor reads soil reflectance. ESP32 computes organic matter index and uploads to cloud.
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.
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