View source for Arduino/C3/Robot-Control-using-Bluetooth/English-timed


{| border=1
|  Time
| Narration

|-
| 00:01
| Welcome to the''' s'''poken tutorial on '''Robot Control using Bluetooth'''.

|-
|00:06
| In this tutorial, we will learn about:

|-
| 00:09
|  '''Bluetooth Communication'''

|-
| 00:11
|  '''HC-05 Bluetooth Module''' and

|-
| 00:14
|  Controlling a '''Robot''' using an '''Android application'''
|-
| 00:19
| To follow this tutorial, you should have basic knowledge of:

'''Electronics '''and '''C or C++ '''programming language
|-
| 00:29
| To record this tutorial, I am using:

|-
| 00:32
|  '''Ubuntu Linux 16.04''' OS

|-
| 00:36
|  '''Arduino UNO''' board

|-
| 00:38
|  '''Arduino IDE '''and  '''Android Phone'''
|-
| 00:43
| We require few external components:

|-
| 00:47
|  '''HC-05 Bluetooth Module'''

|-
| 00:50
|  '''L293D IC'''

|-
| 00:54
| We have learnt about the '''L293D Motor Driver IC '''in the earlier tutorial.

|-
| 01:00
|  '''9V Battery with Connector'''

|-
| 01:03
|  '''9Volts-1Ampere Adapter'''
|-
|01:06
|  '''Bluetooth communication''' is a '''wireless technology'''.

|-
| 01:10
|  It is used to transfer '''data''' between different '''electronic devices'''.

|-
| 01:15
|  It supports '''data, audio transmission ''' with a range of '''7 to 8 meters'''.

|-
| 01:21
|  It is specially designed for '''short range wireless data communication'''. 

|-
| 01:26
|  In this tutorial we will use the '''HC-05 Bluetooth module.'''

|-
| 01:32
| This '''module''' has two operating modes, namely '''Data Mode''' and '''AT Command Mode'''.

|-
| 01:40
| In '''Data Mode''', it can send and receive '''data''' from other '''Bluetooth devices'''.

|-
| 01:46
|  We will be using the '''Data Mode''' in our tutorial.

|-
| 01:50
|  '''AT Command mode''' is used when you want to change the '''setting''' of the '''Bluetooth module'''.

|-
| 01:56
|  For example, to change the '''Baud Rate''' we can use '''AT Command Mode'''

|-
| 02:01
| This is the assembled '''Robot'''.

|-
| 02:05
| We have already installed an '''app''' called '''Car Bluetooth RC '''on '''Android''' phone.

|-
| 02:11
| This '''app''' will control the movement of the '''Robot'''.

|-
| 02:15
| Now we will see how to control the '''Robot''' via '''Bluetooth'''.

|-
| 02:20
| Let us see the '''circuit connection''' in detail. 

|-
| 02:24
| Do the actual '''connection''' with your '''hardware''' as explained here.

|-
| 02:28
| Connect the '''Arduino board''' to your computer using '''Arduino USB cable'''.

|-
| 02:34
| The '''5Volt''' pin of the '''Arduino''' is connected to the '''5Volt''' pin of the '''HC-05 module'''. 

|-
| 02:42
| The '''ground pin''' of the '''Arduino''' is connected to the '''ground pin''' of the '''HC 05 module'''. 

|-
| 02:49
| The '''Rx pin''' of the '''Bluetooth module''' is connected to the '''Tx pin''' of '''Arduino'''. 

|-
| 02:55
| The '''Tx pin''' of the '''Bluetooth module''' is connected to the '''Rx pin''' of '''Arduino'''. 

|-
| 03:01
| Now, note the blinking of '''LED''' in the '''Bluetooth module.'''

|-
| 03:06
| This indicates that your '''Bluetooth module''' is switched '''ON'''.

|-
| 03:10
| Next do the below connections as explained.

|-
| 03:14
| '''Pin 16''' of '''L293D IC''' is connected to '''5Volt''' pin of '''Arduino'''. 

|-
| 03:22
| '''Pins 4,5,12,13''' of the '''L293D IC''' are connected to the '''ground terminal'''. 

|-
| 03:32
| '''Pins 1,2,7 '''of''' L293D IC''' are connected to '''pins 6,3,5''' of '''Arduino''' respectively. 

|-
| 03:45
| '''Pins 9,10,15''' of '''L293D IC''' are connected to '''pins 11,10,9''' of '''Arduino''' respectively.

|-
| 03:57
| One '''DC motor''' is connected to '''pin 3''' and '''6''' of '''L293D IC. '''

|-
| 04:05
| The other '''DC motor''' is connected to '''pin 11''' and '''14''' of '''L293D IC. '''

|-
| 04:13
| Note: You have to connect the''' DC motors''' of the assembled '''Robot''' as shown in figure.

|-
| 04:21
| Recall that we have '''soldered''' a red and black '''wire''' to the '''wire leads''' of the '''motors'''.

|-
| 04:29
| We require a separate '''power source''' for running the '''DC motors.'''

|-
| 04:34
| We will use a '''9V battery''' to power the '''DC motors''' as '''Arduino''' gives only '''5Volt''' output. 

|-
| 04:43
| '''Positive terminal''' of the '''9V battery''' is connected to '''pin 8''' of '''L293D IC. '''

|-
| 04:52
| The '''negative terminal''' of the battery is connected to the '''ground pin''' of the '''Arduino'''. 

|-
| 04:59
| These are all the connections you must do to perform the tasks shown in this tutorial.

|-
| 05:07
| Now place the '''breadboard''' and '''Arduino setup''' on the '''chassis'''.

|-
| 05:12
| This is how I have done the '''setup''' of my '''Robot'''. 

|-
| 05:16
| Now we will write the program in '''Arduino IDE''' for the working of the '''Robot'''.
|-
| 05:21
|  The files used in this tutorial are available in the '''Code Files '''link on this tutorial page. 

|-
| 05:28
|  Please download and extract them. Make a copy and then use them while practising

|-
| 05:35
| Open the '''Arduino IDE.'''

|-
| 05:37
| Type the code as shown.

|-
| 05:41
| These are the '''variables''' assigned for the '''pins''' on the '''Arduino''' connected to '''L293D IC. '''

|-
| 05:50
| The '''variable serialA''' is used to store the '''input character''' received by '''Bluetooth'''.

|-
| 05:57
| Type the code as shown in the '''void setup function'''.

|-
| 06:02
| '''Serial dot begin function''' is used to make the '''Arduino''' ready to '''serially''' exchange messages.

|-
| 06:10
| The messages are exchanged at '''9600 baud rate.'''

|-
| 06:15
| We will use the '''function pinMode '''to configure the '''pins''' to '''OUTPUT mode'''.

|-
| 06:21
| Now we will write the code for the '''void loop.'''

|-
| 06:25
| The''' void loop function''' will move the '''Robot '''in forward, backward, right and left directions.

|-
| 06:33
| '''Bluetooth module''' checks for '''commands''' given from the '''Android app'''.

|-
| 06:38
| These lines of code make the '''robot''' move in the forward direction.

|-
| 06:43
| These lines of code make the '''robot''' turn in the left direction. 

|-
| 06:48
| These lines of code make the '''robot''' turn in the right direction.

|-
| 06:53
| These lines of code make the '''robot''' move in a backward direction.

|-
| 06:58
| Our '''program''' is ready now.

|-
| 07:02
| Click on the''' Compile''' button to verify your''' program'''.

|-
| 07:05
| After''' compiling''', a pop-up window will open to save the current program.

|-
| 07:10
| I will save it as '''Bluetooth underscore Robot.'''

|-
| 07:14
| Click on the '''Save''' button to save the '''program'''.

|-
| 07:18
| Before uploading the '''program''', you must remove the '''Rx''' and '''Tx wires''' connected to '''Arduino'''. 

|-
| 07:26
| Now click on the '''Upload''' button to upload the current '''program''' on''' Arduino'''. 

|-
| 07:33
| When you have successfully uploaded the '''program''' reconnect the '''Rx''' and '''Tx wires''' to the '''Arduino'''. 

|-
| 07:42
| Now, remove the '''Arduino’s USB cable''' from your computer.

|-
| 07:47
| For demonstration purpose, I have connected a '''9Volt 1 Amphere adapter''' to run the '''Robot'''. 

|-
| 07:53
| It is connected at the '''Arduino jack''' available here. 

|-
| 07:58
| You can use a '''power bank''' or a battery instead, to power the '''Arduino'''.

|-
|08:03
| Next, we will use the '''app''' and test the working of the '''Robot'''.

|-
| 08:09
| Take the '''Android''' phone in which you have downloaded the '''Car Bluetooth RC app. '''

|-
| 08:16
| Let us configure the '''Bluetooth''' in your '''Android''' phone.

|-
| 08:20
| Go to the '''Settings''' option on your phone.

|-
| 08:23
| Open the '''Bluetooth '''section.

|-
| 08:26
| '''Turn ON''' your phone’s '''Bluetooth'''.

|-
| 08:30
| Search for nearby '''devices'''.

|-
| 08:34
| You will find '''HC 05''' as one of the options in the list.

|-
| 08:40
| Click on the''' HC 05''' option. It will ask for a '''password'''.

|-
| 08:47
| The '''default password''' for this '''Bluetooth module''' is '''1234'''. Type the '''password'''.

|-
| 08:55
| In some cases, the '''password''' of the '''Bluetooth module''' will be '''0000.'''

|-
| 09:02
| Now, your mobile is connected to the '''HC-05 Bluetooth module'''.

|-
| 09:08
| You can now observe a different blinking pattern of the '''LED''' in the '''Bluetooth module'''. 

|-
| 09:14
| Turn '''OFF''' your phone’s '''Bluetooth'''.

|-
| 09:17
| Now, open the '''Car Bluetooth RC app''' in your phone.

|-
| 09:23
| The app will prompt to turn '''ON''' your phone’s '''Bluetooth'''.

|-
| 09:27
| Click on '''Allow to Continue.'''

|-
| 09:30
| On the top left corner of your phone, click on the arrow.

|-
| 09:34
| Find the '''HC 05''' option and click on it.

|-
| 09:39
| You can see a message as '''Connected OK.''' 

|-
| 09:43
| It indicates that your phone is now connected to the '''HC 05 Bluetooth Module.'''

|-
| 09:49
| Now, it is ready to control the '''Robot'''.

|-
| 09:53
| Let us observe the working of the '''Robot'''.

|-
| 09:57
| When I press the forward button in the app, we can see the '''Robot''' moves in the forward direction.

|-
| 10:04
| When I press the backward button, the '''Robot''' moves in the backward direction.

|-
| 10:09
| To turn the '''Robot''' towards the right hand side, press the right button in the app.

|-
| 10:14
| The right side motor stops rotating and the left side motor continues to rotate. 

|-
| 10:20
| This way the '''Robot''' turns to the right side.

|-
| 10:24
| Likewise, the '''Robot''' will move to the left direction when you press the left button. 

|-
| 10:30
| Thus, we can control the movement of the '''Robot''' using b'''Bluetooth communication'''.

|-
| 10:36
| This brings us to the end of this tutorial. Let us summarize. 

|-
| 10:41
| In this tutorial, we learnt:

'''Bluetooth Communication''',  '''HC 05 Bluetooth Module''' and  Controlling a '''Robot''' using an '''Android application'''

|-
| 10:54
| The video at the following link summarizes the Spoken Tutorial project.

Please download and watch it.

|-
| 11:02
| The''' Spoken Tutorial Project''' Tea conducts workshops and gives certificates.

For more details, please write to us.

|-
| 11:11
| Please post your timed queries in this forum.

|-
|11:15
| The Spoken Tutorial project is funded by MHRD, Government of India.

|-
| 11:21
| This tutorial has been contributed by FOSSEE and Spoken Tutorial Project, IIT Bombay. 

And this is Saurabh signing off. Thanks for watching.

|}