Home automation has emerged as one of the most popular applications of embedded systems and IoT technologies. In this project, we propose a dual-control system for home appliances using both a conventional TV remote (IR communication) and an Android smartphone with a Bluetooth voice command app. The system is built around an Arduino Nano microcontroller, which acts as the central unit for processing user commands and controlling the operation of household devices through relays. The IR receiver allows the use of a standard TV remote to switch appliances ON or OFF, providing a familiar and user-friendly interface. Additionally, the integration of the HC-05 Bluetooth module with an Android voice command application enables users to control appliances through spoken instructions, offering enhanced convenience and accessibility, particularly for elderly or physically challenged individuals. A regulated power supply ensures reliable operation of the system, while four relays are used to interface different home appliances such as lights, fans, and other electrical devices. This dual-mode control system not only adds flexibility and comfort but also demonstrates an affordable and scalable approach to smart home automation. The project highlights the integration of traditional remote-control methods with modern wireless voice-based technology, making it a practical solution for enhancing lifestyle and energy management in smart homes.

The main objectives of the project are:

• To design and implement a dual-mode home automation system using both TV remote (IR) and Bluetooth voice commands for controlling household appliances.
• To develop an Arduino Nano-based control unit capable of receiving and processing commands from both IR receiver and HC-05 Bluetooth module.
• To enable wireless control of appliances such as lights, fans, and other electrical devices through voice commands using an Android application.
• To provide an alternative control option via TV remote, ensuring flexibility for users who may not use smartphones or voice commands.
• To interface multiple home appliances using relays for efficient and safe switching operations.
• To enhance convenience, comfort, and accessibility, especially for elderly and differently-abled individuals.
• To design a cost-effective, scalable, and user-friendly smart home automation solution suitable for real-world applications.

The major building blocks of the project are:  

• Regulated power supply.
• HC-05 Bluetooth module.
• Arduino NANO Microcontroller.
• FOUR Relays along with FOUR Devices.
• IR TV Remote.

  Software’s used:    

1. Arduino IDE for compiling and dumping code into controller
2. Express SCH for Circuit design.

Regulated Power Supply:

     

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