Baby Room Comfort Monitor Plus Kit with Arduino Uno + DHT22 – PID-Controlled Seedling Heat Mat & Humidity Logger

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

Like caring for a newborn, seedlings demand unwavering warmth and consistent humidity. This kit transforms an Arduino Uno into a precision incubator monitor, driving a heat mat via a relay module while a PID algorithm locks the temperature at the exact set point your germination study requires. The waterproof DS18B20 probe reads soil-level heat, the DHT22 captures ambient humidity, and every data point gets a timestamp from the DS3231 RTC before landing on a microSD card. Whether you’re mapping Brassica germination curves for a CBSE biology project or prototyping a smart nursery for a Smart India Hackathon, you get a fully instrumented test bed in one box.

What You'll Build

A self-regulating seedling station that holds a tray at a programmable target temperature using a PID loop. The 0.96-inch OLED cycles through real-time temperature, humidity, set point, and relay status. A microSD module logs every reading with precise timestamps, so you can correlate humidity swings with germination rates over days or weeks. Once calibrated, the system needs no manual tweaking — just plug in any standard 5V or 12V heat mat and let the Arduino run the show.

What You'll Learn

• Implement a software PID controller on Arduino Uno and tune Kp, Ki, Kd for thermal mass
• Interface one-wire DS18B20 and DHT22 sensors, reading accurate temperature and humidity values
• Use a relay module to safely switch a heat mat or other AC/DC load from a microcontroller
• Log sensor data with real-time clock stamps to a microSD card in CSV format for Excel or Python analysis

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

CBSE Class 11–12 students tackling investigatory projects on seed physiology, B.Tech ECE/EEE undergraduates prototyping IoT agriculture modules, and ATL Tinkering Lab mentors who need a reproducible environmental lab. It also fits teams preparing for Smart India Hackathon tracks in agri-tech, as well as hobbyists at IIT, NIT, VIT, or BITS who want to fast-track a data-driven germination study.

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.