ANDROID PHONE CONTROLLED ROBOT

Have you ever wondered a world built of robots that could be controlled through your android phone? A world where all your home appliances turn on and off by a single tap on your android phone! I am gonna bring before all a mechanism to use your android phone as a remote to control several devices via the most common well known transfer path “The Bluetooth”. I hereby present my tiny creation, the android controlled robot car via Bluetooth waves which is the basic principle of this mechanism.

This is the simple prototype of controlling devices through an android phone based on Bluetooth waves. The android phone contains an inbuilt application the Bluetooth controller. This application could be found in the app store or else it can be built by app developers. The purpose of this application is to transmit serial data wirelessly via Bluetooth. You just need to define a specific character that must be sent which will serve the purpose. Now on the robot car there is a Bluetooth breakout module present whose purpose is to act as the receiver. It receives the serial data transmitted by android phone and decodes them. The brain or controlling unit of the robot is the well known Arduino Uno R3 Processor. The Arduino board and the Bluetooth module are connected with each other through the transmit pin and receive pin a.k.a. TXD and RXD. When one sends the data the later receives and the process continues. The entire process works under the mechanism of transmission of serial data and converting them into digital data. This purpose is to be served by the Arduino board where it acts as the converter of serial data to digital data. The Arduino board controls the movement of the robot based on the instruction given by the android phone. For example if the android phone sends a character ‘F’ then the purpose of the Arduino is to make the robot move forward. The Arduino acts accordingly then.

This principle can be used to make home appliances automated and to control there working through an android phone. Not only android phones but also we can use laptops or any other devices that transmit Bluetooth waves for this purpose. Mobile controlled spy robots will serve the best purpose using this mechanism and have a wide range of application in the military and defense field. Unlike radio waves Bluetooth have a higher frequency and no interference occurs once connected to a device which is advantageous for the purpose. However they possess a particular range within which they work. Beyond this range they do not work. So they serve the best when used within the specified frequency range.