Abstract: Technology is an ever-evolving process. Designing products using current technology that improve people’s lives is a valuable contribution to society. This paper presents the design and implementation of a low-cost, flexible, and secure mobile phone-based home automation system. The system is built using a standalone Arduino BT board, with home appliances connected to its input/output ports through relays.

Communication between the mobile phone and the Arduino BT board is carried out wirelessly. The system is designed to be cost-effective and scalable, allowing multiple devices to be controlled with minimal modifications to the core structure. To ensure security, password authentication is implemented so that only authorized users can access and control the home appliances.

Keywords: Home Automation; Smartphone; Arduino; Bluetooth; Home Appliances

Downloads: | DOI: 10.17148/IJIREEICE.2026.14388