The document outlines an internship presentation on a voice-controlled car project undertaken by electronics and instrumentation engineering students. The project utilizes Bluetooth technology and an Android application to execute voice commands, enabling the car to execute movements such as forward, backward, and turning. Key components include an Arduino Uno microcontroller, motor driver, and various sensors, with the overall aim of gaining hands-on experience in embedded systems and IoT.

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“Voice controlled car"
Dept. of Electronics & Instrumentation Engineering
Internship
(18EII83)
Internship presentation
“ Embedded System and IOT ”
Presented by
1. Jayashree S (1DA19EI012)
2. Navyashree S (1DA19EI019)
3. Sirisha S N (1DA19EI041)
Guide
Mrs. Monikashree T S
Asst. Professor

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Content
1. Abstract
2. Introduction
3. Objectives
4. Internship Details
5. Week 1
6. Week 2
7. Week 3
8. Week 4
9. Outcomes

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Abstract
 The project builds a voice controlled car that can be controlled by voice
commands which reacts in accordance to the corresponding voice
command.
 Simple voice commands like left, right, forward, back, stop are used to run
the car.
 These commands are given to Bluetooth module via an android application.
 The Bluetooth module and control unit are combined to store and test the
voice commands.
 When an instruction for the automobile (car) is identified, a command
message is sent to Arduino UNO, the Microcontroller of the car by the
Bluetooth device.
 This command is analyzed by the microcontroller and followed up.
 This work has been limited to the ZigBee system in the short-range (100mts
range), and is linked to the car over long distance via long-range modules.

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Introduction
 TechnoFly was formed by professionals with formal qualifications and
industrial experience in the fields of embedded systems, real-time software,
process control and industrial electronics.
 The company is professionally managed and supported by qualified
experienced specialists and consultants with experience in embedded
systems – including hardware and software.
 Later Single Board Computers (SBCs) – were developed and are still
manufactured. Such hardware boards support a broad range of processors
– including 8 bit, 16 and 32 bit processor.
 Since 2015, company also started offering design and development
services. This includes a complete spectrum of activities in product
development life cycle that is idea generation, requirement gathering to
prototype making, testing and manufacturing.
 Company has so far provided product design services for various sectors
which include the Industrial automation, Instrumentation, Automotive,
Consumer and Defense sector.

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Internship Details:
Duration : One Month
From Date : 21/09/2022
To Date : 20/10/2022
Company Name : Technofly Solutions
Week One : Intrduction to Embedded systems and IoT
Week Two : Interfacing components to LPC2148 Arm Microcontroller
Week Three & Week Four : Voice Controlled Car
Objectives
To Gain hands-on experience in the field of Embedded systems and IoT
Interaction with professional experts.
To Enhance interpersonal skills like verbal communication, time management, work organizing etc.

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Week One : Introduction to Embedded Systems and IoT
Embedded System
 An embedded system is one kind of a computer system mainly
designed to perform several tasks like to access, process, store
and also control the data in various electronics-based systems.
 Embedded systems are a combination of hardware and software
where software is usually known as firmware that is embedded
into the hardware.
 Requires a hardware platform on which it performs the
operation.
 Embedded system hardware is built with a microprocessor or
microcontroller.
 The embedded system hardware has elements like input output
(I/O) interfaces, user interface, memory and the display.
 Usually, an embedded system consists of Power Supply,
Processor, Memory, Timers, Serial communication ports, System
application specific circuits

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Arduino UNO
 Arduino UNO is a microcontroller board based on
the ATmega328P.
 It has 14 digital input/output pins (of which 6 can be used as
PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, a
USB connection, a power jack, an ICSP header and a reset
button.
 It contains everything needed to support the microcontroller;
simply connect it to a computer with a USB cable or power it
with a AC-to-DC adapter or battery to get started.
 The Arduino/Genuino Uno has a number of facilities for
communicating with a computer, another Arduino/Genuino
board, or other microcontrollers.
 The ATmega328 provides UART TTL (5V) serial communication,
which is available on digital pins 0 (RX) and 1 (TX)

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ARM Microcontroller
 The ARM stands for Advanced RISC machine and it is a 32-
bit reduced instructions set computer (RISC) microcontroller.
It was first introduced by the Acron computers’
organization in 1987.
 The ARM microcontrollers are cost sensitive and high
performance devices which are used in a wide range of
application such as industrial instrument control systems,
wireless networking and sensors and automotive body
system etc.
 LPC2148 is the widely used IC from ARM-7 family. It is
manufactured by Philips and it is pre-loaded with many
inbuilt peripherals making it more efficient and a reliable
option for the beginners as well as high end application
developer.

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Week Two : Interfacing Programs to LPC2148
Interfacing LED to LPC2148
#include<LPC214x.h>
#define LED (1<<16)
void delay(int i);
int main (void)
{
IO0DIR |= LED;
while(1)
{
IO0SET |= LED;
delay(10000);
IO0CLR |= LED;
delay(10000);
}
}
void delay(int i)
{
int j,k;
for (j=0;j<i;j++)
for (k=0;k<35;k++);
}

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Interfacing Object and Fire sensorsprogram to LPC2148
#include<lpc214x.h>
#include "Lcdtask.h"
#define ir_sensor (1<<11)
#define fire_sensor (1<<12)
int main(void)
{
IO0DIR&=~ir_sensor;
IO0DIR&=~fire_sensor;
init_lcd();
while(1)
{
if((IO0PIN & ir_sensor)==0)
{
command_write(0x01);
command_write(0x80);
putstring("object detected");
}
else if((IO0PIN & fire_sensor)==0)
{
command_write(0x01);
command_write(0x80);
putstring("fire detected");
}
}

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“Voice controlled car "
Week three & Four : Voice Controlled Car
VOICE CONTROLLED CAR
• The project proposes the use of Android mobile and Bluetooth module to control a car via voice commands.
• When we say voice control, the first term to be considered is Speech Recognition.
• These commands are given to Bluetooth module and received via android application.

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Components:
• Arduino Uno
• Connecting wires
• Motor driver
• Breadboard
• Chassis
• Bluetooth HC-05

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Circuit Diagram
Working principle
 The car runs on simple voice commands forward, back, left, right, dance
 The voice command is given to Android mobile as Input
 This input is given to Arduino by Bluetooth module and Android gives commands to the motors as programmed
 With the help of Motor driver circuit it can sense the obstacles

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Outcomes
I have carried out my internship in Technofly Solutions. I have learnt about Embedded Systems, ARM LPC-2148 and Arduino
microcontroller. Designed an embedded system to control robotic motions using various sensors.
Outcomes of internship are
1. Enhancements of clients to work on all types of clients.
2. Enhancement of embedded system to control more types of embedded systems.
3. Learnt about interfacing of LED, LCD, Switch, DC Motor, Sensors, RFID card, Wi-Fi, GSM, Buzzer and UART.
4. Learnt to control speed of DC motor and to control brightness of LED using PWM.
Done mini-project which involves the control of movement of Car using Arduino Uno Bluetooth HC-05 Motor driver
Breadboard Chassis.

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