CONTENTS

• Introduction

• Basic block diagram of project

• Circuit diagram

• Components used

• Technology used

• Software used

• Advantages

• Applications

• Future scope

INTRODUCTION

• Aim of the project is to use a mobile phone to

control a robotic arm mounted on a Robot.

• Provides robust control, large working range.

• Control of robot involves 3 different phases:

a) Processing

b) Action

c) Detection

Basic Block Diagram of Project

MT

Circuit Diagram

COMPONENTS

Battery 12V

Ic 1 - At89C52

Ic 2 - L293d

Ic 3 - cd7805

DC-Motor 6V

LCD 2 x 1

DTMF

Frequencies 1209Hz 1336Hz 1477Hz

697Hz 1 2 3

770Hz 4 5 6

852Hz 7 8 9

941Hz * 0 #

DTMF FREQUENCY KEYPAD

DTMF decoder is connected to mobile phone via Head-Phone port.

It generates two frequencies respective to key pressed from mobile.

MICROCONTROLLER

• Advanced-RISC architecture.

• 16K bytes of In-System Programmable Flash

Program memory.

• Internal and external interrupts.

• 32 general-purpose registers.

• High-performance, Low-power AVR 8-bit

Microcontroller.

DC MOTOR CONTROLLER

L293D

• Microcontroller output is not sufficient to driveDC motors, so L293D is used.

• L293D comes in 16-pin DIP. It can providecurrent upto 600mA at voltages from 4.5V to36V.

• It can be used to drive inductive loads such asrelays, solenoids etc

• In the project it is used for simultaneous bi-directional control of two DC motors.

The Two Basic States of a Motor Driver

Forward Movement Backward Movement

SOFTWARE USED

1. KIEL MICROVISION (EMULATOR)

A HEX file can be created with the help of Keil which is required for burning onto chip. It has a powerful debugging tool which detects most of the errors in the program.

2. 8051 LOADER

8051 loader is a software developed by robosapiens. The HEX file created with the help of keil was selected through it for programming the microcontroller.

ADVANTAGES

• Wireless control

• Usage of remotely controlled military vehicles inthe Winter War .

• Takes in use of the mobile technology which isalmost available everywhere.

• This wireless device has no bound on range andcan be controlled as far as network of cell phone.

APPLICATIONS

Scientific

Military and Law Enforcement

Search and Rescue

FUTURE SCOPE

IR Sensor

Alarm-Phone Dialer

Adding a Camera