Drinking Water Quality Tester Kit with ESP32 + LoRa
Correlate Drinking Water Quality with Soil Organic Carbon Using an ESP32 + LoRa Multi-Node 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.
This kit lets you build a five-node network that drops into borewells or soil pits at varying depths, measuring TDS, EC, and optical turbidity simultaneously. The ESP32 master node collects LoRa transmissions, timestamps each reading with a DS3231 RTC, and stores it on a microSD card — ready to map against soil organic carbon samples from the same horizons. It replaces months of lab-bound batch sampling with a field‑ready system that runs on 18650 cells and 433MHz LoRa, even where Wi‑Fi does not reach.
What You'll Build
You will construct five identical waterproof node enclosures, each housing an Arduino Nano, RA‑02 LoRa module, TDS/EC probe, turbidity sensor, TP4056 charging circuit, and an 18650 cell. The master ESP32 with RTC and microSD module acts as the gateway, receiving data in a point‑to‑multipoint star topology. Depth‑indexed CSV logs let you plot conductivity and turbidity profiles against organic carbon, turning a single kit into a research‑grade tool for agronomy or groundwater monitoring.
What You'll Learn
- Configuring 433MHz LoRa modules for reliable multi-node data collection over 500m in rural terrain, including antenna matching and sleep‑mode power savings.
- Calibrating TDS/EC meters and optical turbidity sensors using solution standards so all five nodes deliver consistent, reproducible readings.
- Designing weatherproof, battery‑powered remote sensors with TP4056 charging, 100nF decoupling, and low‑dropout protection for continuous field deployment.
- Structuring RTC‑timestamped SD card data for direct import into soil carbon correlation spreadsheets or GIS environments.
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 kit serves agriculture scientists at ICAR and state universities, B.Tech Agri and environmental engineering students working on Smart India Hackathon or capstone projects, and groundwater monitoring teams who need a replicable multi-sensor network. If your research ties drinking water conductivity and turbidity to soil organic carbon across borewell depths, this kit provides the pre-validated hardware and AI-guided assembly to get you logging field data faster than any piecemeal purchase.
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?
The AI companion walks you through each wiring and calibration step. For complex LoRa pairing or sensor drift issues, our WhatsApp support team responds within hours, ensuring your network is field‑ready.
Can I deploy this kit in areas without Wi‑Fi or cellular coverage?
Yes. The nodes communicate via 433MHz LoRa and log data on the microSD card locally. You can later retrieve the SD card or add an optional GSM‑GPRS module to the ESP32 for remote uploads.
How do I ensure accurate depth‑wise data logging?
Each node transmits a programmed ID corresponding to its borewell depth. The master ESP32 appends this label to every CSV row along with the RTC timestamp, giving you a clear depth profile for organic carbon correlation.
What maintenance do the sensors need in the field?
Optical turbidity sensors require occasional lens cleaning. TDS/EC probes drift over months; the kit includes calibration instructions using standard solutions to maintain ±5% accuracy across all five nodes.
Drinking Water — 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