DESIGN AND CONSTRUCTION OF A HOME AUTOMATION SYSTEM USING BLYNK APP AND ESP32 MICROCONTROLLER
Abstract
ABSTRACT
The increasing demand for convenience, energy efficiency, and security in residential
environments has driven the adoption of home automation systems globally. However, many
existing systems remain complex, expensive, and inaccessible, particularly in developing
regions. This project addresses these challenges by designing and constructing a cost-effective
and functional home automation system using the ESP32 microcontroller and the Blynk IoT
platform. The system enables users to remotely monitor and control household appliances, such
as lights and fans, in real-time from a smartphone via a Wi-Fi connection. The ESP32 serves
as the central processing unit, interfacing with a 2-channel relay module to safely switch AC
loads. The Blynk mobile application provides an intuitive user interface with virtual buttons for
seamless control. A dedicated power supply unit was constructed to provide stable DC power
to the control circuitry. The implemented system was rigorously tested and demonstrated
reliable performance, with a response time of less than one second for executing control
commands. The results confirm that the project successfully met its objectives of creating a
functional automation system, enabling remote control, and promoting energy efficiency by
preventing unnecessary power consumption. The project concludes that the integration of the
ESP32 and Blynk offers a practical, scalable, and affordable solution for modern smart home
applications, with recommendations for future enhancements including sensor integration and
voice control capabilities.
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