The features of Android like its Connectivity , Java support has been widely used in many applications . This paper presents the design and implementation of a low cost yet compact and wide range Android smart phone based home automation system. This project is based on the popular Arduino prototyping board where the electrical appliances are interfaced with ports of the board . In order to make the system energy efficient , we've used some sensors to analyse the current environmental conditions so as to provide energy efficiency . To handle these various operations we have integrated a popular RTOS, the scmRTOS, which has a very small footprint on the microcontroller. An Andro id application which has been developed for Android devices is used for interation between user and system .A typical wireless home automation system allows one to control house hold appliances from a centralized control unit which is wireless. The project demonstrates a system that can be integrated as a single portable unit and allows one to wirelessly control lights, fans, water sprinkler etc. and t urn on or off any appliance , get the status of different sensors and take decision accordingly.The project also deals with contolling the fan speed, light intensity by limitting the amount of current supplied to appliances. The medium used f or sending a nd receiving of commands is Wi Fi w hich is a ga in of t he feat ure of Android system a nd a t the control uni t XBee transceiver is used for same purpose. The remote system receives the commands through XBee transceiver and performs the request function. The sensors unit is capable of detecting chnages in environmental conditions like temperature , soil moisture and can accordingly turn on or off appliances such as lights and fans and in the meantime send its status back to base station.
Parimal A. Gaikwad, Nikhil R. Kerkar, Nawazish N. Khan
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