Soil Nutrient Conductivity Map Kit with Arduino Uno + LED - Map Nutrient Gradients with TDS EC Probe & Data Logging

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Build a portable soil nutrient mapping device that measures electrical conductivity and temperature at multiple soil depths. The kit logs field data to an SD card with real-time clock timestamps, enabling you to analyze nutrient concentration gradients later. Designed specifically for Indian soil conditions and student budgets, this intermediate project teaches practical field instrumentation. Ideal for CBSE students, agri-tech innovators, and Smart India Hackathon participants.

What You'll Build

You'll assemble a handheld sensor unit with a TDS/EC probe, two DS18B20 temperature sensors, an OLED, and an RTC-SD logger. Insert the probe at different depths and watch measurements appear on-screen and save to a CSV file. The OLED provides instant feedback, while the RTC ensures every reading is precisely timestamped for later mapping.

What You'll Learn

• Calibrate and integrate a TDS/EC electrical conductivity sensor with Arduino for reliable soil readings.
• Log timestamped sensor data to a MicroSD card using an RTC module, creating CSV files ready for analysis.
• Deploy multiple DS18B20 waterproof digital temperature sensors on a single 1-Wire bus to measure soil temperature at different depths simultaneously.
• Build a battery-operated field instrument with an OLED screen for real-time feedback, learning power management and enclosure design considerations.

Kit Contents

TDS EC probe at multiple soil depths maps nutrient concentration gradient in agricultural field.

What's in this kit

• Arduino Uno R3
• TDS EC Meter
• DS18B20 Waterproof x2
• DS3231 RTC
• MicroSD Module
• 0.96in OLED
• 4.7k? Resistors x5
• 10k? Resistors x5
• 100nF Caps x5
• 400-pt Breadboard
• M-M Wires x25
• 9V Battery Snap