1. ANDROID APPLICATION CONTROLLED REMOTE ROBOT OPERATION
Project Title
ANDROID APPLICATION CONTROLLED REMOTE ROBOT OPERATION
Under the Guidance of
Submitted by

2. The project is designed to control a robotic vehicle using an android application.
Bluetooth device is interfaced to the control unit on the robot for sensing the signals transmitted by the android application.
This data is conveyed to the control unit which moves the robot as desired.
An 8051 series microcontroller is used in this project as control device.
ABSTRACT

3. Remote operation is achieved by any smart-phone/Tablet etc
Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation. Transmitting end uses an android application device remote through which commands are transmitted.

4. EXISTING SYSTEM
In the Present situation ,a Robot is controlled by manual over ride .
Every time a manual action is required to Switch ON and Switch OFF the buttons to control the Robot.
So at that time only Robot is moving according to the manual instruction.
Missing the objective that need to monitor the Robot wirelessly

5. PROPOSED SYSTEM
Proposing a system ,where a Robot is monitored wirelessly.
Giving instructions to the Robot wirelessly ,with an IR (infrared) Transmission with a Remote controller acts as an Transmitter
By IR(infrared) Receiver, Robot receives the commands wirelessly from transmitter and perform the task
By this we can operate our Robot with remote control ,which has a advantage in performing various tasks automatically according to instructions by IR transmitter

6. BLOCK DIAGRAM

7. HARDWARE REQUIREMENTS
8051 series Microcontroller,
DC motors, Motor Driver IC,
Crystal, Resistors, Capacitors,
Voltage Regulator, Battery,
Robot Body,
Bluetooth Device.

8. POWER SUPPLY Bridge rectifier 5v Regulator 230 V AC 50 Hz 5V DC
Filter(470µf)
12V step down
transformer

9. It is a smaller computer Has on-chip RAM, ROM, I/O ports...
MICROCONTROLLER
It is a smaller computer
Has on-chip RAM, ROM, I/O ports...
RAM
ROM
I/O Port
Timer
Serial COM Port
Microcontroller
CPU
A single chip

10. INTERNAL STRUCTURE OF A MICRO CONTROLLER-AT89S52/51
CPU
On-chip RAM
On-chip ROM for program code
4 I/O Ports
Timer 0
Serial Port
OSC
Interrupt Control
External interrupts
Timer 1
Timer/Counter
Bus Control
TxD RxD
P0 P1 P2 P3
Address/Data
Counter Inputs

11. Features of AT89S51/52 Compatible with MCS®-51 Products
8K Bytes of In-System Programmable (ISP) Flash Memory
Endurance: 10,000 Write/Erase Cycles
4.0V to 5.5V Operating Range
Fully Static Operation: 0 Hz to 33 MHz
256 x 8-bit Internal RAM
32 Programmable I/O Lines
Three 16-bit Timer/Counters
Eight Interrupt Sources
Full Duplex UART Serial Channel
Interrupt Recovery from Power-down Mode
Watchdog Timer
Dual Data Pointer

12. Pin Description

13. MOTOR DRIVER (L293D) Wide supply-voltage range: 4.5V to 36V
Features:
Wide supply-voltage range: 4.5V to 36V
Separate input- logic supply
Internal ESD protection
Thermal shutdown
High-Noise-Immunity input
Functional Replacements for SGS L293 and SGS L293D
Output current 1A per channel (600 mA for L293D)
Peak output current 2 A per channel (1.2 A for L293D)
Output clamp diodes for Inductive Transient suppression(L293D)

14. What is called Android..?
Android is an open-source operating system which means that any manufacturer can use it in their phones free of charge.
It was built to be truly open. For example, an application can call upon any of the phone’s core functionality such as making calls, sending text messages, or using the camera. 

15. …….contd
Android is built on the open Linux Kernel. Furthermore, it utilizes a custom virtual machine that was designed to optimize memory and hardware resources in a mobile environment.

16. What is an android application on mobile phones?
An android app is meant for phones with an android based operating systems. They can be downloaded from the android app Market which is pre-loaded on every android phone.
Blue control APP and Bluetooth Spp APP are some examples.

17. Android-The world's most powerful mobile platform
Very customizable. Open source operating system is easily changed, hacked, manipulated, and molded to fit whatever functionality you had in mind. Found on all platforms for all prices depending on what hardware and software version you are interested in. The battery is usually replaceable.

18. COMPARISION OF ANDROID WITH OTHER OS
ANDROID OS : Android is open source software, manufacturers can modify the operating system to suit their respective needs and phones. This becomes a cheap and feasible alternative for the manufacturer, as opposed to developing an operating system in-house or hiring a software company to do it.

19. i-OS:
It's not available on all carriers but this is expanding. The battery is not replaceable which is why all the I Phone users you know have it plugged in all the time as the battery degrades.

20. Windows Phone:
Windows Phone is a closed-sourced, which means that it is solely developed by the company and protected by copyright. The Windows Store is limited as there only a few number of apps

22. ANDROID APPLICATION OPERATED BLUETOOTH
The Android platform includes support for the Bluetooth network stack, which allows a device to wirelessly exchange data with other Bluetooth devices.
The application framework provides access to the Bluetooth functionality through the Android Bluetooth APIs.

23. Android App Blue-control Screen

24. FEATURES OF BLUETOOTH
Super simple and easy way to interface using Bluetooth stack.
3.3V Device with standard 5V DC Power source.
Can also support SPI Protocol, pins are made available.
Low power consumption, Low cost.
Has high-performance wireless transceiver system
Can be used to interface with PC, Mac or Android phones/tablets.

25. Generic Default Visibility at Software side:HC-06 or Linvor
Default Pairing code is not '0000' but '1234'.
Please use Baud Rate with 8-N-1 connectivity from other device.
Works with any microcontroller with Serial connectivity.

26. DESCRIPTION
L293D is a dual H-bridge motor driver integrated circuit (IC).
In its common mode of operation, two DC motors can be driven simultaneously, both in forward and reverse direction.
The motor operations of two motors can be controlled by input logic at pins 2 & 7 and 10 & 15.
Input logic 00 or 11 will stop the corresponding motor. Logic 01 and 10 will rotate it in clockwise and anticlockwise directions, respectively.
Enable pins 1 and 9 (corresponding to the two motors) must be high for motors to start operating. When an enable input is high, the associated driver gets enabled

27. DC- MOTOR
A DC motor is an electric motor that runs on direct current (DC) electricity. In any electric motor, operation is based on simple electromagnetism.
A simple 2-pole DC electric motor (here red represents a magnet or winding with a "North" polarization, while green represents a magnet or winding with a "South" polarization).
Every DC motor has six basic parts -- axle, rotor (a.k.a., armature), stator, commutator, field magnet(s), and brushes.

28. TSOP1738 Features:- Photo detector and preamplifier in one package
Internal filter for PCM frequency
Improved shielding against electrical field disturbance
TTL and CMOS compatibility
Output active low
Low power consumption
High immunity against ambient light
Continuous data transmission possible (up to 2400 bps)
Suitable burst length .10 cycles/burst

29. Description:-
The TSOP17 – series are miniaturized receivers for infrared remote control systems.
PIN diode and preamplifier are assembled on lead frame, the epoxy package is designed as IR filter.
The demodulated output signal can directly be decoded by a microcontroller.
TSOP1738 is the standard IR remote control receiver series, supporting all major transmission codes.

30. BC547 (NPN –Transistor)
The BC547 transistor is an NPN Epitaxial Silicon Transistor.
It is used in general-purpose switching and amplification BC847/BC547 series 45 V, 100 mA NPN general-purpose transistors.
The ratio of two currents (Ic/Ib) is called the DC Current Gain of the device and is given the symbol of hfe or nowadays Beta, (β).

31. The current gain from the emitter to the collector terminal, Ic/Ie, is called Alpha, (α), and is a function of the transistor itself

32. OPERATION OF PROJECT Conventional T.V. remotes output infra red codes.
A standard TV remote that delivers infrared codes at 38 KHz is thus received by the TSOP receiver feeding a 14 bit data so emitted from the remote to the controller through receiver.
The program is so returned that it recognizes the corresponding 14 bit data relating to a particular number being pressed at the remote.
The program is so returned i.e., while executed it sends commands to the motor driver IC as per its requirement for running the motor for the movement of the robot as explained in the subject above in L293D.
The TV remote button 1 is for left, 3 is for right, 2 is forward, 5 is for backward and 0 is for stop.

33. Soft ware Requirements
Keil an ARM Company makes C compilers, macro assemblers, real-time kernels, debuggers, simulators, integrated environments, evaluation boards, and emulators for ARM7/ARM9/Cortex-M3, XC16x/C16x/ST10, 251, and 8051 MCU families.
Compilers are programs used to convert a High Level Language to object code. Desktop compilers produce an output object code for the underlying microprocessor, but not for other microprocessors.

34. i.e the programs written in one of the HLL like ‘C’ will compile the code to run on the system for a particular processor like x86 (underlying microprocessor in the computer).
For example compilers for Dos platform is different from the Compilers for Unix platform  So if one wants to define a compiler then compiler is a program that translates source code into object code.

35. BIBILOGRAPHY
“The Microcontroller and Embedded systems” by Muhammad Ali Mazidi and Janice Gillispie Mazidi , Pearson Education.
ATMEL 89S52 Data Sheets.

36. THANK YOU