Bluetooth Controlled Robot

Project Description:

1. AT89S52: The AT89S52 is a low power, high performance CMOS 8-bit microcontroller with 8k bytes of in-system programmable flash memory. This is a powerful microcontroller which provides high flexibility and cost effective solution to many embedded control applications. It has the following standard features: 8K bytes of flash, 256 bytes of RAM, 32 I/O lines, watchdog timer, 2 data pointers, 3 16-bit timers/counters, on-chip oscillator and clock circuitry.
2. HC-05 Bluetooth Module: It consists of bluetooth serial interface module and bluetooth adapter. It consists of 2 modules namely master and slavery device. And in HC-05 bluetooth module the master and slave mode can be switched.
3. L293D: The L293D are quadruple high-current half drivers. It is designed to provide bidirectional drive currents of upto 600-MA at voltage ranging from 4.5V to 36V. It is mainly used to drive inductive loads such as relays, solenoids, dc and bipolar stepping motors. On the L293D, external high-speed output clamp diodes should be used for inductive transient suppression.
4. DC Motor: This is an electric machines which converts electrical energy to mechanical energy. This is the most commonly used motor for the actuation of robots.
5. Application Instruction: The android platform includes the support for the bluetooth network stack that allows the device to wirelessly exchange data with other bluetooth devices. The application framework provides access to the bluetooth functionality through the Android Bluetooth APIs.

Project Implementation:

1. The HC-05 bluetooth modules should be paired with the mobile and the default password to establish the connection would be 1234 or 0000
2. Then you need to click on “Select Device” option to select the paired bluetooth module
3. When you press the “Up arrow” it sends the data “A” to the bluetooth module connected with the bot and the microcontroller is programmed in such a way that whenever it receives the command “A” it moves forward
4. Similarly, when you press the “Down arrow” it sends the data “B” to the bluetooth module connected with the bot and the microcontroller is programmed in such a way that whenever it receives the command “B” it moves reverse
5. And, when you press the “Left or Right arrow” it sends the data “C or D” respectively to the bluetooth module connected with the bot and the microcontroller is programmed in such a way that whenever it receives the command “C or D” it moves left or right accordingly
6. When the “Stop” button is pressed, it sends the data “E” to the bluetooth module connected with the bot and the microcontroller is programmed in such a way that whenever it receives the command “E” the robot’s movement gets stopped
7. You can then click on the “Disconnect” option to remove the paired bluetooth module

Software requirements:

1. Keil Uvision 3: Keil Software makes C compilers, macro assemblers, real-time kernels, debuggers, simulators, integrated environments and evaluation boards for the 8051, 251, ARM and XC16x/C16x/ST10 microcontroller families

• Smart phone
• Bluetooth
• motor
• android
• 8051

• Bluetooth
• smart Systems
• robotics
• navigation