Bluetooth Controlled Car via Android

The main objective of this project is to build a car that can be controlled from an Android app via bluetooth communication.

The project consists of two modules

1. The Car

It consists of a 8051 micro controller interfaced to a Bluetooth module via a serial port. The Bluetooth module receives the commands sent by the Android App. We have commands for the car to move Left, Right, Forward, Reverse and Stop. Based on the inputs the micro controller sends commands to H-Bridge L293D to drive the car in the required speed and direction.

2. The Controller

It consists of a Android phone having the hardware support of Gyroscope and Bluetooth. The App detects the orientation of the Gyroscope and sends appropriate commands to the car via the Bluetooth in the phone. The application is fixed in Landscape mode and we use the two axes of the gyroscope i.e the heading and the roll for the operation. Heading is used to detect Left/ Right while Roll is used for Forward/Reverse/Stop. The compass on the screen conveniently shows the direction in which the car is supposed to move.