IRJET- Voice Recognition -Butler Bot

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 07 Issue: 02 | Feb 2020 www.irjet.net p-ISSN: 2395-0072
© 2020, IRJET | Impact Factor value: 7.34 | ISO 9001:2008 Certified Journal | Page 32
VOICE RECOGNITION -BUTLER BOT
T.KOUSALYA1, MOHAMMED YASER ARAFATH2, NARENDRAN K3, RATHEESH V4, SATHEESH R5
1Assistant professor, Dept. of Mechanical and Automation Engineering, SNS college of Technology, Tamil Nadu
2,3,4,5Student , Dept. of Mechanical and Automation Engineering, SNS college of Technology, Tamil Nadu
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Abstract - Many of the wireless-controlled robots use RF
modules. But our Project make use of Android mobile phone
for robotic control. The control commands available aremore
than RF modules. For this the android mobile user has to
install an application on her/his mobile. Then user needs to
turn on the Bluetooth in the mobile. The wireless
communication techniques used to control the robot is
Bluetooth technology. User can use various commands like
move forward, reverse, move left, move right using these
commands which are sent from the Android mobile. Robot has
a Bluetooth receiver unit which receives the commands and
give it to the microcontroller circuit to controlthemotors. The
microcontroller then transmits the signal to the motor driver
IC’s to operate the motors.
Key Words: Motor driver circuit, Bluetooth module, Android
phone, Embedded code, GSM Evolution, radio frequency,
Microcontroller, wireless communication.
1. INTRODUCTION
Our Project Aim is to designing a Robot that can be operated
using Android mobile phone. The controlling of the Robot
done wirelessly through Android smart phone using the
Bluetooth feature present in it. Here in the project the
Android smart phone is used as a remote control for
operating the Robot.
Android Software stack for mobile devices that includes an
operating system, middlewareandkeyapplications.Android
boasts a healthy array of connectivity options, including Wi-
Fi, Bluetooth and wireless data over a cellular connection
(for example GPRS, EDGE (Enhanced Data rates for GSM
Evolution), and 3G). Android providesaccesstoa widerange
of useful libraries and tools that can be used to build rich
applications. In addition, Android includes a full set of took
that have been built from the ground up alongside the
platform providing developers with high productivity and
deep insight into their applications. Bluetooth s an open
standard specification for a radio frequency (RF)-based,
short range connectivity technologythatpromisestochange
the face of computing and wireless communication. It is
designed to be an expensive, wirelessnetworkingsystem for
all classes of portable devices, such as laptops, PDAs
(personal digital assistants), and mobile phones. It will
enable wireless connections for desktop computers,making
connections between monitors, printers, keyboards,andthe
CPU cable-free. The controlling device of the work system is
a Microcontroller. Bluetooth module, DC motors are
interfaced to the Microcontroller. The data receive by the
Bluetooth module from Android smart phone is fed as input
to the controller. The controller acts accordingly on the DC
motors of the Robot. The robot in the project can be made to
move in all the four directions using the Android phone. The
direction of the robot is indicated usingLEDindicatorsofthe
Robot system. In achieving the task the controller s loaded
with a program written using Embedded ‘C’ language.
2. Objective
The objective behind making this robot was to bring the
functionalities of a robot service in a cheap and onto a
mobile device which almost everybody is having. So while
surveying as to on which platform or rather operating
system the project has to be implemented ,we selected
android for the following reasons:
 Android is an open source platform
 Supports multifunction
 Provides rich tools to make interactive application
 Downloadingthesoftware’srequiredformakingthe
application are absolutely free Along with this we surveyed
the popularity of the operating system. Market share of
android which was mere2.8%in2009(initial stage),boosted
to 48% till August, 2011 which is almost half the shareofthe
total market. Our basic aim is to make the application reach
as many people as possible and this goal is achieved by
implementing the application on android. Share of
worldwide 2011 Q2 Smartphone sales to end users by O.S,
according to Gartner.
Therefore if we become successful in making a robot which
is controlled by an Android then almosthalfofthisworld can
control their home appliances or small robots without
expending any much of their fortune.
3. Methodology
3.1 Block diagram
The purpose of our Project is to provide simpler robot’s
hardware architecture but with powerful computational
platforms so that robot’s designer canfocusontheirresearch
and tests instead of Bluetoothconnectioninfrastructure.This
simple architecture is also useful for educational robotics,
because students can build their own robots with low cost
and use them as platform forexperiments in several courses.
The main purpose of this project is to develop a remote user
interface to control a robot viaawirelesstechnology.Thereis
a need to communicate with the robot remotely in order to
control the robot movements and pass critical data both
ways. The current IR control are not good enough because

the robot does not have an IR transmitter but only a receiver,
meaning that the communication is one way. The IR
communication works only in mean of direct sight and any
objects in the way will obstruct the communication.
Bluetooth communication will enable us to control the robot
up to 100 meters without the need for direct sight which
means that the robot could be located behind a wall or some
other object and the communication would not be lost. The
below figure 3.1.a explain the working of the module
FIG 3.1.A BLOCK DIAGRAM
3.2 CONNECTIVITY AND COMMUNICATION
For the communication of the robot with the cell phone or a
mobile we are using the Bluetooth device. The Bluetooth
device (HC-05) it is attached to the robot that receives the
data from the mobile and also can transmit the data.
Bluetooth is a wireless communications protocol running at
2.4 GHz, with client-server architecture, suitableforforming
personal area networks. It s designed for low power devices
such as mobile phones [3.5]. Bluetooth now comes as
standard on the majority of mobile phones, and desktop
computers. It can be easily fitted with a module to allow
Bluetooth communication. Bluetooth is theonlyappropriate
communications protocol because there is no fear of getting
the frequency interference. Bluetooth usestheMACAddress
of the device. The Bluetooth gives the connectivity between
two devices using their MAC Address show in figure 3.2.a
FIG 3.2. A COMMUNICATION MODULE
3.3 ANDROID
Android devices are powerful mobile computers and they
become more and more popular smart phones used
worldwide. They becomes more and more popular for
software developers because of its powerful capabilities and
open architecture, it’s based on the java programming
language. Because Android uses the Java programming
language getting startedwiththeAndroidAPItoeasy;theAPI
is open and allows easy access to the hardware components.
Android devices provide numerous communication
interfaces like USB, Wi-Fi and Bluetooth, that can be used to
connect to the robot. We think it is a great platform for a
robotic system control, because it’s much cheaper than any
other ARM-based processing unit. We use android platform
because it is the widest used in the worldandrunsthelargest
number of Smart phones worldwide.
3.4 DC MOTOR
Almost every mechanical movement that weseearoundusis
accomplished by an electric motor. Electric machines are
means of converting energy. Motors take electrical energy
and produce mechanical energy. Electric motor is used to
power hundreds of devices we use in everyday Iife. An
example of small motor applications includes motors usedin
automobiles, robot, hand power tools and food blenders.
Micro-machines are electric machines with parts the size of
red blood cell and find many applications in medicine.
3.5 PROPOSED ALGORITHM
Step 1: Establish Communication between Android and
Bluetooth Module.
Step 2: Press Command input button from App.
Step 3: Corresponding Command input string is send to
Bluetooth Module.
Step 4: Check Command is received by the Bluetooth
module.
Step 5: If “Disconnect” Command given then end
communication.
Step 6: Close Application.
3.6 ALGORITHMFOR ARDUINO
Step 1: If input is received, check for a string received.
Step 2: Compare contain of string received with pre-defined
command in Arduino
Step 3: Command matches with desired if-else block and
motor will drive accordingly to output of that block.
Step 4: If Command received is “Stop” entire process will
stop.
Step 5 If Command received is “Disconnect” it will reset all
the codes.

3.7 STEP TO CONNECT
1) Connect the wiring, power up, while the device is not
connected, the Bluetooth module board has a white LED
flashing
2) At PC side, search Bluetooth device.
3) Found name called "HC-05" device
First make sure your HC-06 Bluetooth module 8 paired with
your mobile. The default password for pairing is “1234” or
“0000”. Check the manual of Bluetooth module. 4.2 Click on
“SELECT DEVICE” icon to select pared Bluetoothmodule.4.3
When press “up arrow” it sends the data “A” to Bluetooth
module connected with the circuit. When microcontroller
detects “A” the robot/robot car moves FORWORD.4.4 When
press “DOWN ARROW” to sends the data “B” to Bluetooth
module connected20 with the circuit. When microcontroller
detects “B” the robot/robot car moves REVERSE. 4.5 When
press “LEFT ARROW” to sends the data “C” to Bluetooth
module connected with the circuit. When microcontroller
defects “C” the robot/robot car turns LEFT. 4.6 When press
“RIGHT ARROW” to ends the data “D” to Bluetooth module
connected with the circuit. Whenmicrocontrollerdefects“D”
the robot/robot car turns RIGHT. 4.7 When press “STOP”
button which is in the centre of remote it sends the data “E”
to the Bluetooth module connected with the circuit. When
microcontroller defects “E” therobot/robot car getsstopped
4.8 Click on “DISCONNECT?” icon to disconnect paired
Bluetooth module show in fig 3.7 a
Fig 3.7.a connecting module
4. DESIGN
The Android app is generally developed usingJAVAlanguage
but the Android app can also be build without knowing the
Java language. The app was developed in “App Inventor’
developed by MIT [8]. This app inventor is designed
specifically for Non — Computer Science students thosewho
don’t know the JAVAlanguage. The figure shownbelowisthe
block diagram back- hand design forthe application.Theapp
shown below has 5 buttons and all the buttons gives 5
different bytes in the output that has to be fed to the
Microcontroller to process [9]. For example. If we press
forward button ,the Bluetooth Module will give byte at its
output as shown m the figure. The app consists of the option
in the main screen whether to use the accelerometer of the
phone or to use the buttons to control the Robot. This app
inventor brings out the revolution in the Embedded Systems
& Robotics. The app invented by the searches for the
Bluetooth devices along with their MAC addresses. The user
just has to select the particular MAC Address. When a
particular MAC is selected, the status shown on the screen is
“Connected”. Now all the buttons are active and the app is
now connected with the robot and mobile phone can control
the robot.
5. SYSTEM ARCHITECTURE
Figure 5.a shows the overall architecture of the system,
and with which components the different types of users
will interact.

6. MOBILE APPLICATION
USAGE
1. Coupled Mode: Two modules will establish
communication automatically when powered
2. PC hosted mode: Par the module with bluetooth
dongle directly as virtual serial
3. Bluetooth protocal : Bluetooth Specification
v2.0+EDR
4. Frequency: 2.4GHz ISM band
5. Modulation:GFSK(GaussianFrequencyShiftKeying)
6. Speed: Asynchronous: 2.1Mbps(Max) / 160 kbps
7. Synchronous: |1Mbps/lMbps
8. Security: Authentication and encryption
9. Profiles: Bluetooth serial port
10. CSR chip: Bluetooth v2.0
11. Wave band: ?.4GHz-2?.8GHz, ISM Band
12. Protocol: Bluetooth V2.0 ® Voltage: 5V (3.6V-6V,
NO more than 7V)
13. User defined Baud rate : 4800, 9600, 19200, 38400,
57600, 115200, 230400,460800,92 1600,1382400
7. CONCLUSION
Wireless control is one of the most important basic needs for
all living beings. But unfortunately due to a huge amount of
data and communication overheads the technology is not
fully utilized. Many of the wireless –controlled robotsuseRF
modules. But this project make use of android mobile phone
for robotic control which is very cheapand easyavailablethe
control commands available are more than RF modules. For
this the android mobile user has to install an application on
her/his mobile. The user needs to turn on the Bluetooth on
mobile, The wireless communication techniques used to
control the robot is Bluetooth technology. User can use
various commands like move forward, reverse, move left,
move right using these commands which are send from the
android mobile, Robot has a Bluetooth receiver unit which
receives the commands and give it to the micro controller
circuit to the motors. The micro controller Transmits the
signal to the motor driver IC’S to operate the motor. The
objective of the motor is to realize the smart living, more
specifically the home lighting system using Bluetooth
technology. Robot and smart phones are the perfect match,
specially mobile robots. As phones and mobile devices are
each time more powerful, using them as robot for building
robot with advanced feature such as voice recognition .
Android Bluetooth–enable phonesandBluetoothmodulevia
HC-06 and communication among Bluetooth devices. It is
concluded that smart living will gradually turn in to areality
that consumer can control the home remotely andwirelessly
as shown in fig 7.a
Fig 7.a Fully designed BOT
REFERENCES
[1] A. K. and R. C. , "Voice Controlled Robot,"
INTERNATIONAL JOURNAL OF INNOVATIVE RESEARCH IN
TECHNOLOGY, vol. 1, no. 11, pp. 338- 344, 2014.
[2] A. D. A. P. S. N. and L. R. , "Three way controlled android
Smartphone based," International Journal of Advanced
Research in Computer and CommunicationEngineering, vol.
4, no. 9, pp. 212-216, September 2015.
[3] K. K. and D. J. S. , "ARDUINO BASED VOICECONTROLLED
ROBOT," International Research Journal of Engineering and
Technology (IRJET), vol. 02, no. 01, pp. 49-51, March 2015.
[4] J. and D., "Home Automation and security system using
android adk," International journal of electronics
communication, 2013.
[5]"Arduino,"[Online]. Available: www.arduino.com.
[Accessed 2015].

[6] S. N. and S. , "Design of a Voice Controlled Robotic Arm
for Picking and Placing an object" IOSR Journal of
Engineering, vol. 2(4), pp. 670-673, April 2012
7. Pradeep, S., Kousalya, T., Suresh, K. A., & Edwin, J. (2016).
Iot and its connectivity challenges in smart
home. International Research Journal of Engineering and
Technology (IRJET), 3, 1040-43.
[8] M. Chalupa, Simulation metod of analysis of driving
system dynamic properties, in: Proceedings of the
International conference 48th International conference of
Departments of Mechanical Engineering, Bratislave, 2007.
[9] M. Koucky, D. Valis, Some aspects of sequential systems
design, in: Proceedings 17th ISSAT International Conference
on Reliabilityand QualityinDesign Piscataway,International
Society of Science and Applied Technologies , 2011.
[10] M. Chalupa, J. Veverka, Dynamic loading simulation of
vehicle track, in: Proceedings oftheInternational Conference
Engineering Mechanics, 2007.
[11] M. Chalupa, J. Veverka, Computerized dynamic loading
simulation of vehicle track, in: Proceedings of the
International Conference Dynamics of Rigid andDeformable
Bodies, 2007.
[12] R. Vlach, M. Chalupa, The methodology of track
mathematical model verification data measuring of tracked
vehicle BMP 2, International military methodology of
measuring, University of Defence Brno,VTUO Slavicin,2008.

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