Arduino Uno Thermostat Kit – Control Your Room Heater Like a Smart Home

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 a room that always stays warm exactly when you want it – without you touching a switch. With this kit, you build a working thermostat that reads real temperature from a DS18B20 probe, toggles a relay to control a heater, and holds a target temperature steadily using hysteresis logic. The LCD screen shows current and set temperatures, just like a commercial smart thermostat. It's a perfect first step into home automation and IoT for young makers, hobbyists, and students.

What You'll Build

You'll assemble a complete thermostat circuit on a breadboard, wirelessly (or via jumper wires) connecting the sensor, LCD, tactile buttons, and relay module to an Arduino Uno. Press the buttons to raise or lower the target temperature. The relay clicks on when the room is too cold, then off when it's warm enough, with a programmable difference to avoid rapid switching. Everything is battery-powered and fits in a small enclosure – you can later attach it to a real room heater or use the built-in LED indicator for testing.

What You'll Learn

• Interface a DS18B20 one‑wire temperature sensor and read precise digital values
• Program an Arduino to control a 5V relay module for safe switching of high‑power loads
• Implement hysteresis control logic to maintain stable temperature without oscillations
• Display real‑time data on a 16x2 LCD using an I2C backpack for minimal wiring

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Designed for absolute beginners aged 5+ (adult supervision recommended for the relay wiring), this kit is a hit in ATL Tinkering Labs and CBSE Class 11–12 physics projects. B.Tech ECE and EEE students use it for their first microcontroller lab, and it's a favourite for science exhibitions and Smart India Hackathon prototypes. If you've ever wanted to automate a room heater or just learn how thermostats work, this kit has everything you need.

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.