Report

MAY, 2015

ACKNOWLEDGEMENT

We are grateful to BITS Pilani for giving us this opportunity to get an insight into how an organization works by offering this course at the end of second year. This helped a lot in bridging the gap between the normal academics taught in the class and the industry practices.

We are thankful to SERVOMAX INDIA LTD., for making this course well- structured and well organized. We feel privileged to have opted this station. Even though we have very little knowledge about the subjects being dealt with in various projects, Servomax has given the chance to learn and experience the real time project scenario

We are very grateful to the general manager of SERVOMAX INDIA LTD., Mr. Raghukumar M, for sparing their valuable time to train us and teach us how an organization works and also motivating us for working in our interests and also giving us confidence about our work.

We would like to thank Prof. A. Jagadeesh for guiding us through out and for extending himself in a personal way, addressing all the issues and concerns.

TABLE OF CONTENTS

1. Introduction2. The Project

2.1 Project Description2.2 List of Components2.3 Theory2.4 Formulae2.5 Steps Taken2.6 Prototype

2.6.1Components2.6.2Modus Operandi2.6.3Code

3. Appendix4. Bibliography

INTRODUCTION : SERVOMAX INDIA LIMITED, HYDERABAD, INDIA is the leading manufacturer of Transformers, Voltage stabilizers, energy saving equipment and Isolation transformers in India for the past 32 years. The products are well appreciated world over and received much recognition for their quality. Established in 1982 with a corporate objective to provide efficient energy for greener future, SERVOMAX has grown to be one of the country’s biggest manufacturers of power saving and power conditioning equipments with the largest satisfied customer base. Dedication to providing environment friendly quality solutions and commitment to delight customers with unique value propositions has helped Servomax to gain customer trust and thereby commercial success. Servomax has stringent procedures to highest quality products that offer value for money. With proven track record as the most trusted partner and vendor, Servomax is committed to rolling over innovative range of products.

Here at Servomax, we are working on a this project report which basically is trying to reduce manual work in households, industries and various other sectors where there is transfer of load in a predefined path.

This report has an objective of designing and developing a wheeled robot controlled wirelessly with the purpose of carrying a maximum payload of 2 kgs from a starting point to any destination, along predefined paths.

We had planned to reach out goal in 3 phases. In phase one we were working on a miniature robot that was provided to us by the company. We had to code it in a way so that it can travel on any predefined path. Phase 2 dealt with the design and assembly of the new robot so that it could carry a load of 2kgs accurately in that path. Phase 3 is about the introduction of wireless

communication between the user & the robot using Wi-Fi or Bluetooth.

The miniature robot provided to us is shown below.

THE PROJECT

Project Description: The project required us to design and develop a wheeled robot controlled wirelessly with the purpose of carrying a maximum payload of 2 kgs from a starting point to any destination, along predefined paths.

List of Components:

1) MSP 430 (Texas Instruments) Microcontroller

2) DC motors (100 rpm, 12 V)

3) Motor driver (L298D)

4) IR proximity sensors

5) IR sensors

6) Voltage regulator (LM7805)

7) Magnetometer (HMC 5883L)

8) Plastic chassis (10”x15”)

9) 10 cm wheels (4 cm width)

10) Capacitors

11) Resistors

12) Wires

13) 12 V 2000 mAh Lead Acid Batteries

14) Battery Recharging Circuitry

Microcontroller

A microcontroller (sometimes abbreviated µC, uC or MCU) is a small computer on a single integrated circuit containing a processor core, memory, and programmable input/output peripherals. Program memory in the form of Ferroelectric RAM, NOR flash or OTP ROM is also often included on chip, as well as a typically small amount of RAM. Microcontrollers are designed for embedded applications, in contrast to the microprocessors used in personal computers or other general purpose applications.

Motor Driver

A motor driver is a little current amplifier; the function of motor drivers is to take a low-current control signal and then turn it into a higher-current signal that can drive a motor.

DC Motors

An electric motor is a machine which converts electrical energy into mechanical energy.It is based on the principle that when a current-carrying conductor is placed in a magnetic field, it experiences a mechanical force

whose direction is given by Fleming's Left-hand rule

IR Proximity Sensors:

A proximity sensor is a sensor able to detect the presence of nearby objects without any physical contact. A proximity sensor often emits an electromagnetic field or a beam of electromagnetic radiation (infrared, for instance), and looks for changes in the field or return signal. The object being sensed is often referred to as the proximity sensor's target. Different proximity sensor targets demand different sensors.

Magnetometer

Magnetometers are devices that measure magnetic fields. A magnetometer is an instrument with a sensor that measures magnetic flux density B (in

units of Tesla or As/ m2). Magnetometers refer to sensors used for sensing magnetic fields OR to systems which measure magnetic field using one or

more sensors.

Voltage Regulator

1. A voltage regulator is designed to automatically maintain a constant voltage level. A voltage regulator may be a simple "feed-forward" design or may include negative feedback control loops. It may use an electromechanical mechanism, or electronic components.

Lead Acid Battery

An electric battery is a device consisting of two or more electrochemical cells that convert stored chemical energy into electrical energy. Each cell

contains a positive terminal, or cathode, and a negative terminal, or anode. Electrolytes allow ions to move between the electrodes and

terminals, which allows current to flow out of the battery to perform work.