Abstract: Automation is a trending topic in the 21th century making it play an important role in our daily lives. The main attraction of any automated system is reducing human efforts and time. Our paper presents an idea of microcontroller based voice controlled home automation system using android applications of smartphones. Such a system will enable users to have control over every appliance in his/her home with their voice, all that the user needs is an android Smartphone and a control circuit. The control circuit consists of 8051 microcontroller, which processes the user commands and controls the switching of devices. The connection between the microcontroller and the Smartphone is established via Bluetooth widespread wireless technology used for sharing data.

Keywords: Microcontroller, Android application, Bluetooth, Automation.