Build a Smart Greenhouse Climate Controller with Arduino Uno, DHT22 & Relay-Controlled Appliances

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

Imagine walking into your school’s greenhouse and seeing an LCD display that lets you toggle fans, a heater, a humidifier, and grow lights—all by name, with real-time temperature and humidity readings. This kit teaches you to build that exact climate monitor using an Arduino Uno, a precision DHT22 sensor, and a 4-channel relay module. It’s the same kind of automation system found in commercial polyhouses and agritech setups, scaled for a student workbench.

What You'll Build

You’ll assemble a fully functional greenhouse control panel. The 16x2 LCD shows live DHT22 temperature and humidity, while four tactile buttons let you navigate a menu to turn appliances on and off. Each relay channel is labeled for a real device—fan, heater, humidifier, or light—so your system mirrors what’s used in professional horticulture. The project runs on a 9V battery and fits neatly on the included breadboard.

What You'll Learn

• Connect and calibrate the DHT22 temperature/humidity sensor
• Program a multi-level menu system on a 16x2 LCD using I2C backpack
• Control high-power appliances safely through a 4-channel relay module with flyback diodes
• Design a modular automation system using Arduino Uno with sensor feedback loops

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This intermediate kit is designed for CBSE Class 11-12 students exploring embedded systems, B.Tech ECE/EEE undergraduates building mini-projects, and teams preparing for the Smart India Hackathon or ATL Tinkering Lab challenges. It’s also ideal for hobbyists at IIT, NIT, VIT, BITS Pilani, and other engineering institutions who want a hands-on automation project with real agricultural relevance.

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.