Greenhouse Climate Monitor Kit with Arduino Uno & Relay – Automate Humidity Control for Your Plants

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 a greenhouse that needs perfect humidity to a laundry room where dry clothes mean lower bills, this kit puts climate-aware control into your hands. The centerpiece is a clever project borrowed from our own design lab: a dryer pause monitor. Place the DHT11 inside the dryer drum, and when humidity drops below 30%—signaling dry clothes—the relay cuts power to the tumbler, preventing over-drying and saving energy. But the same circuit easily becomes a greenhouse fan controller, a terrarium misting trigger, or a smart mushroom grow monitor. You build the logic, the kit does the heavy lifting.

What You'll Build

A working climate monitor that reads temperature and humidity in real time and makes a decision. The default code triggers a relay at a pre-set humidity threshold, ready to control a fan, pump, or alarm. In the dryer project, the sensor reports decreasing moisture; when it crosses that line, the relay pauses the tumbler. Inside a greenhouse, the same setup can vent hot air, start a humidifier, or actuate a shade. You’ll walk away with a physical, practical automation tool—not just a tutorial.

What You'll Learn

• Read temperature and humidity data from a DHT11 sensor and display it on your PC or an optional screen
• Write conditional logic in Arduino IDE to turn a relay ON/OFF when sensor values cross a threshold
• Interface a 5V relay module safely, understanding flyback diodes and connecting AC/DC loads
• Prototype circuits on a breadboard without soldering, then scale to a permanent project box

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Designed for CBSE Class 11-12 students exploring home automation in their practical exams, B.Tech ECE/EEE first-years building humidity-based mini projects, Smart India Hackathon teams prototyping smart agriculture, ATL tinkering lab kids discovering IoT, and hobbyists at IIT/NIT/VIT/BITS who want a ready-to-go climate controller without hunting for components across multiple websites.

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.