Designing and implementation of an application based electrical circuit for smart home application

This article describes a project in which an electrical circuit is designed by which an user can turn on/off any electrical appliances i.e. fans, lights and can lock/unlock windows, doors etc. of his/her house or office through sending SMS using a custom built android application to a specific phone number connected to the microcontroller. In this system an android application is used to send instruction through SMS. At the receiving end, a GSM module receives the SMS and sends the particular hexadecimal codes to a microcontroller. Then the microcontroller reads the code and sends the signals to relays for performing actions according to the specified logic. For designing the system Proteus, a virtual system modeling and circuit simulation application, was used as simulation software. The code for microcontroller was written in mikroC PRO and burnt with PICkit 2 softwares. This system ensures smart safeguarding as well as efficient use of energy for its user´s office and living place.