Automated Greenhouse Climate Monitor for Seed Sprouting – Arduino Uno + DHT22 Kit

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

Bring reliable automation to your seed germination tray. This kit lets you build a greenhouse monitor that continuously checks ambient humidity and activates a mist maker the moment levels drop — ensuring delicate seeds never dry out. Whether you’re an urban gardener starting basil on a balcony or a student preparing an agricultural IoT prototype, this system delivers hands-on learning and practical control.

What You'll Build

You’ll assemble a complete climate controller on a breadboard. The DHT22 sensor reads humidity every few seconds and displays it on the OLED. When humidity falls below your programmed threshold, the relay engages a 5V mist maker to spray fine moisture over your seed tray. An active buzzer sounds an additional alert if levels become critically low. Powered by a 9V battery or USB, the finished unit can sit right beside your seedling shelf, running unattended.

What You'll Learn

• Interface a DHT22 digital humidity sensor and read precise values with Arduino.
• Program a 5V relay to switch an external device (mist maker) based on sensor thresholds.
• Display real-time sensor data on a 0.96-inch OLED using I2C communication.
• Design a closed-loop feedback system with visual and audible alerts for critical environmental conditions.

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Designed for CBSE Class 11–12 students building biology or electronics projects, B.Tech ECE/EEE undergraduates prototyping IoT-based greenhouse solutions, and Smart India Hackathon teams tackling agricultural challenges. It’s also a great fit for ATL tinkering labs introducing sensor-actuator systems and for home gardeners who want to automate humidity control for their seedling trays.

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.