See Plant Transpiration in Real Time with This Arduino-Powered DHT22 Humidity Logger

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

Plants lose water through tiny leaf pores - but can you actually watch it happen? This kit lets you seal a leaf inside a chamber, precisely measure the rising humidity with a DHT22 sensor, and timestamp every reading with a real-time clock. Within an hour, you'll have a live graph of transpiration rate on the OLED screen, perfect for science fairs, biology practicals, and ATL tinkering labs.

What You'll Build

You'll assemble a compact data logger that reads humidity and temperature from a leaf inside a closed container (like a zip-lock bag or bottle). The Arduino captures data every few seconds, the DS3231 RTC adds exact time stamps, and the OLED shows both current values and a simple trend line. When you present it, everyone sees the invisible process of transpiration turned into hard numbers.

What You'll Learn

• How to wire a DHT22 digital humidity sensor and interpret its serial output
• Using a real-time clock module to timestamp sensor data for later analysis
• Displaying live data and basic graphs on a 0.96-inch OLED screen
• Designing a controlled experiment: sealing a leaf, logging humidity rise, and calculating transpiration rate

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Perfect for CBSE Class 9-12 biology students tackling transpiration practicals, B.Sc. botany labs needing a low-cost data logger, and ATL Tinkering Lab participants exploring environmental sensors. Also ideal for Smart India Hackathon teams looking to prototype a plant health monitor quickly. The beginner-level circuit and clear pinouts mean even a 5-year-old can follow the wiring with minimal help.

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.