Build a Soil Frost Warning System with Arduino Uno & DS18B20 - Protect Your Garden

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

When a sudden frost threatens your nursery or kitchen garden, this kit lets you build a reliable early-warning system that screams for attention. Bury the waterproof DS18B20 probe in the soil, upload the sketch, and the buzzer plus bright red LEDs will trigger the moment ground temperature drops near freezing. It's a practical IoT starter project that solves a real problem for gardeners and small-scale farmers across India, especially during winter vegetable cultivation.

What You'll Build

You'll assemble a self-contained temperature monitor on a breadboard that reads soil temperature once per second. The Arduino continuously checks the DS18B20; if the temperature falls below a threshold you set (e.g., 2�C), the active buzzer sounds and two red LEDs flash. When the soil warms again, it automatically silences. The system runs on a 9V battery, so you can place it anywhere in the garden without a power outlet.

What You'll Learn

• Interface a digital DS18B20 temperature sensor with Arduino and read one-wire data
• Program conditional thresholds in Arduino IDE to trigger alarms based on real-world sensor input
• Drive an active buzzer and multiple LEDs as visual and audible alert outputs
• Assemble a stable breadboard circuit with pull-up resistors and manage battery power for field deployment

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Ideal for CBSE Class 11-12 students exploring embedded systems for their practicals, B.Tech ECE/EEE first-years building mini-projects, and ATL Tinkering Lab participants working on agriculture or weather prototypes. It's also a perfect hands-on gift for a child who loves gardening and wants to add tech to a terrace farm. No prior microcontroller experience needed - the AI companion walks you through every wire and line of code.

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.