Multi-Sensor Science Data Logger Kit — Log Temperature, Humidity, Light & Soil Moisture with Arduino Mega

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

From tracking microclimate changes in a school botany experiment to monitoring soil moisture for a Smart India Hackathon prototype, this kit turns raw sensor data into a lab notebook you can analyse later. With two DHT22s, a BMP280 for pressure and altitude, a BH1750 lux meter, and two soil probes, all readings are stamped to the second by a DS3231 real-time clock and written to a microSD card — no laptop needed once you upload the code.

What You'll Build

You'll wire up a standalone Arduino Mega data logger that simultaneously records indoor/outdoor temperature, humidity, atmospheric pressure, light intensity, and soil moisture from two plants. The 0.96-inch OLED shows live readings, and every data point gets saved with a timestamp to a CSV file on a microSD card. Pop the card into any spreadsheet tool and you have instant graphs for your project report or science fair.

What You'll Learn

• Reading multiple I2C and analog sensors on an Arduino Mega without address conflicts
• Writing timestamped data to a microSD card using the DS3231 RTC and SPI protocol
• Implementing a non-blocking logging loop that updates an OLED display while writing files
• Calibrating soil moisture sensors against known wet/dry reference points for reproducible results

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This intermediate kit is built for CBSE Class 11-12 students designing physics or biology investigatory projects, B.Tech ECE/EEE undergraduates working on environmental monitoring or Smart India Hackathon entries, and ATL Tinkering Lab mentors who need a ready-to-log multi-sensor platform. It assumes you can install the Arduino IDE and libraries, but the AI companion walks you through every connection and code block.

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.