Arduino Soil Moisture & Temperature Data Logger — Build Your Own Field-Ready Monitoring System

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

Designed for students, tinkerers, and agri-tech enthusiasts who need a reliable way to capture soil conditions over time. This kit brings together a capacitive soil moisture sensor, a waterproof DS18B20 temperature probe, and a DS3231 real-time clock to write timestamped readings to a microSD card every 15 minutes. The 0.96-inch OLED display gives you instant feedback at the field site. Whether you're prototyping a smart irrigation controller for a Smart India Hackathon, validating a crop science hypothesis for a CBSE Class 12 project, or learning embedded data logging in your B.Tech ECE lab, this kit skips the sourcing hassle and gives you a field-ready logging setup in one afternoon.

What You'll Build

You'll assemble a standalone data logger that records soil moisture from two locations and soil temperature from a stainless-steel probe, stamps each reading with date and time, and stores everything on a FAT-formatted microSD card. The OLED screen lets you monitor live values and system status without a laptop. The entire circuit runs on a 9V battery, making it portable enough for real soil bin experiments.

What You'll Learn

• Interface capacitive soil moisture sensors and calibrate readings for your soil type
• Read precise temperature data from the DS18B20 using the OneWire protocol
• Synchronize the DS3231 RTC module and format timestamp strings
• Write data to a microSD card with the SPI-based SD module and manage file creation

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This intermediate kit is built for high school students working on CBSE Class 11-12 investigatory projects, B.Tech ECE and agricultural engineering students who need a reliable sensor logger for horticulture or irrigation experiments, and participants in the Smart India Hackathon or Atal Tinkering Labs competitions. It's equally suited for an IIT/NIT/VIT lab assignment where you must demonstrate long-term environmental data acquisition.

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.