Soil Carbon Proxy Monitoring Network Kit with ESP32 + LoRa
Build a Multi-Depth Soil Carbon Proxy Monitoring Network — ESP32 + LoRa Kit for Precision Agriculture
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Deploy a network of five battery-powered soil probes that measure total dissolved solids (TDS), electrical conductivity (EC), and optical turbidity at adjustable depths. These parameters serve as reliable proxies for organic carbon content in agricultural soils. Each probe transmits its readings via LoRa to a central ESP32 gateway, which timestamps and logs data to a MicroSD card — ready for analysis or cloud integration.
What You'll Build
A five-node LoRa sensor array, each node housed in a waterproof enclosure with an Arduino Nano, RA-02 LoRa module, sensors, and a rechargeable 18650 cell. The ESP32 gateway coordinates data collection and stores records with RTC timestamps. You'll gain a complete soil monitoring system that can be expanded to cover larger areas, and understand the relationship between easily measured parameters and soil carbon levels.
What You'll Learn
- Designing a star-topology LoRa network using RA-02 modules for long-range agricultural telemetry
- Calibrating TDS, EC, and turbidity sensors for soil-specific readings across moisture extremes
- Assembling and waterproofing field-deployable sensor nodes with solar-ready battery management
- Interpreting sensor correlations to build a proxy model for soil organic carbon estimation
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| Arduino Nano | 5 |
| RA-02 LoRa | 6 |
| TDS EC Meter | 5 |
| Turbidity Sensor | 5 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| 433MHz Antenna | 6 |
| 18650 Cell | 5 |
| TP4056 Module | 5 |
| 100nF Caps | 20 |
| PCB Prototype Board | 6 |
| Waterproof Enclosures | 5 |
| 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 agritech researchers, precision agriculture professionals, and B.Tech/M.Tech students in agricultural engineering or IoT from institutions like IITs, NITs, and state agricultural universities. It's particularly valuable for Smart India Hackathon teams addressing soil health, sustainability, or carbon credit monitoring challenges. Prior experience with Arduino or embedded C is recommended.
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 box to access the AI build companion, which can answer questions specific to this kit's wiring, code, and calibration. WhatsApp support is also available.
What is the communication range of the LoRa network?
In open farmland, the RA-02 modules can reliably transmit over 2–3 km with the included 433MHz antennas. Range depends on terrain, antenna placement, and data rate settings, which the guide explains.
How do I correlate sensor readings to actual soil carbon?
The kit includes a calibration methodology: take soil samples at different depths, measure with your probe, then send the same soil to a lab for Walkley-Black carbon analysis. Build your own correlation equation from the paired data.
TDS EC + optical turbidity at multiple soil depths correlate with organic carbon content. LoRa uploads data.
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