14-10-2017, 01:30 PM
Android is a software stack for mobile devices that includes an operating system, middleware and key applications. Android has a wide range of connectivity options such as Wi-Fi, Bluetooth and wireless data over a cellular connection (eg GPRS, EDGE (enhanced data rates for GSM Evolution) and 3G). Android provides access to a wide range of libraries and useful tools that can be used to create rich applications. In addition, Android includes a full set of tools that have been built from scratch along with the platform that provides developers with high productivity and a deep insight into their applications. Bluetooth is an open standard specification for a radio-frequency (RF) -based short-range connectivity technology that promises to change the face of computing and wireless communication. It is designed to be a low-cost wireless network system for all kinds of portable devices, such as laptops, PDAs (personal digital assistants) and mobile phones. It will also allow wireless connections for desktop computers, making connections between monitors, printers, keyboards and the CPU wirelessly. The whole system control device is a microcontroller. The Bluetooth module, DC motor, contact speed sensor and LCD display are interconnected to the microcontroller. Data received by the Bluetooth module from the Android smartphone is fed as input to the controller. The controller operates in accordance with the speed and direction of the DC motor. In addition, the speed and direction of the motor can be seen on the LCD. Upon reaching the task, the driver is loaded with a program written using the Embedded language 'C'.