Arduino/C3/Robot-Control-using-Bluetooth/English-timed

Time	Narration
00:01	Welcome to the spoken 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 bBluetooth 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.

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