Take Control of Your Home: Build a 4-Appliance Smart Controller with Arduino Uno and DHT22

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

Turn any room into a smart space with a menu-driven control panel. This kit lets you build a breadboard dashboard that controls four appliances by name-select 'Fan' or 'Light' on an LCD and press a button to trigger a relay. The DHT22 temperature sensor continuously updates the display, making this a real responsive home controller.

What You'll Build

By the time you power up, you'll have a fully functional smart home dashboard. The 16x2 LCD shows a scrollable menu with four customizable appliance names; each tactile button triggers a dedicated relay channel to switch real devices on or off. The controller monitors room temperature via DHT22 and refreshes the display every second-a system that mirrors commercial smart plugs built from basic components.

What You'll Learn

• Interfacing an I2C LCD and implementing multi-button menu navigation without delay-based blocking.
• Driving a 4-channel relay module safely, including flyback diode protection and understanding AC isolation.
• Reading accurate temperature and humidity from the DHT22 digital sensor using the Adafruit library.
• Writing modular Arduino sketches that combine sensor data, user input, and state machines into a cohesive user interface.

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately