Automatic Seed Sprouter Mister Kit with Arduino Uno + DHT22: The Hands‑Free Way to Perfect Sprouts

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 waking up to perfectly misted sprouts without ever touching a spray bottle. This kit lets you build a smart system that reads humidity with a DHT22 sensor and automatically triggers an ultrasonic mist maker via relay — giving your sprouts the constant moisture they need to thrive, while you focus on other tasks. You’ll assemble a complete, working prototype that mimics commercial smart gardening equipment, perfect for home use or a standout school project.

What You'll Build

You’ll wire together a real-time humidity controller on a breadboard. When the DHT22 detects humidity below the threshold you set, the Arduino Uno energises the relay, powering the mist maker until the environment returns to optimal moisture. A 0.96‑inch OLED shows live readings and system status, and an active buzzer warns you if levels drop unexpectedly — a full embedded IoT‑ready system.

What You'll Learn

• Interfacing DHT22 temperature/humidity sensors and reading data with the Arduino Uno
• Programming threshold‑based control logic to switch a relay on and off
• Displaying real‑time sensor data on an OLED screen using I2C communication
• Integrating an active buzzer for audio alerts and assembling a reliable embedded circuit

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Whether you’re a CBSE Class 12 student preparing a physics investigatory project, a B.Tech ECE sophomore exploring sensor‑actuator systems, or a tinkerer at an ATL lab looking for a Smart India Hackathon demo, this kit gives you a real‑world smart agriculture prototype. It’s also ideal for VIT, NIT, or BITS Pilani students building automation projects and for hobbyists who want a reliable, educational build.

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.