Coastal Salinity Monitor Kit: TDS, GPS, SD Card Data Logger
Arduino-Powered Coastal Salinity Monitor: GPS & SD Card Data Logger 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.
Deploy this coastal monitor at an estuary and capture salinity intrusion data as the tide rises and falls. The Arduino Uno reads TDS conductivity, attaches precise GPS coordinates, and timestamps every reading using a real-time clock - all logged to a microSD card for later analysis.
What You'll Build
You'll assemble a waterproof field logger that measures total dissolved solids (salinity) in coastal water, tags each sample with GPS location and exact time, and stores it on a microSD card. After soldering the components onto a prototype board and enclosing them, you can take the monitor to a tidal creek and record how salt water pushes upstream during the flood tide.
What You'll Learn
- Calibrate a TDS EC meter for accurate salinity measurement in estuary water
- Interface a NEO-6M GPS module and parse NMEA data for latitude/longitude stamps
- Log time-stamped sensor data to a microSD card using a DS3231 RTC
- Assemble and solder a field-ready environmental sensor package in a waterproof enclosure
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| TDS EC Meter | 1 |
| NEO-6M GPS Module | 1 |
| DS3231 RTC Module | 1 |
| MicroSD Card Module | 1 |
| 0.96 inch OLED Display | 1 |
| 4.7k? Resistors | 5 |
| 100nF Ceramic Capacitors | 10 |
| Waterproof Enclosure | 1 |
| PCB Prototype Board | 2 |
| 9V Battery Snap | 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 is designed for B.Tech (ECE/EEE) students building environmental monitoring systems for campus estuary surveys, Smart India Hackathon teams tackling the 'Smart Water' theme, and IIT/NIT research interns studying coastal salinity dynamics. It assumes basic Arduino programming and soldering skills.
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 included in the box to open the AI build companion, which guides you through wiring, code, and calibration step by step. You can also reach our Bengaluru team on WhatsApp for direct help.
How do I calibrate the TDS sensor for estuary water?
The guide explains calibration with a 12.88 mS/cm standard solution, typical for brackish conditions. You adjust the calibration factor in the firmware until the sensor reading matches the reference.
Can the logger run through a full tidal cycle in the field?
Yes, the waterproof enclosure shields the electronics from splashing. With a fresh 9V battery and sampling every 2-5 minutes, the system runs for over 8 hours, covering a complete tide.
What format is the data logged to the SD card?
Data is saved as a CSV file with columns: timestamp, TDS (ppm), latitude, longitude. You can open it directly in Excel, Python, or MATLAB for tidal analysis.
TDS conductivity sensor in estuary water measures salinity intrusion over tidal cycle. Logs to SD with GPS.
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