Step by Step

Free Recharge of Rs.70 for Downloading Teenpatti App
1) Download App --> http://goo.gl/wfD2oW
2) Login using Facebook and click on World cup and download some resources when asked
3) Now keep tapping on right arrow (>) till the last last screen appears
4) Then on the next screen scroll down and enter your email address & click on I AGREE
(Scroll down only then you can enter Email-Id)
5) You will get a verification email. Verify it and after that click on the PLAY button to participate.
That's it. You will get 2 freecharge coupon on your facebook email id within 6 hours.1 coupon value is Rs.20 and another coupon value is Rs.50
Use these coupons on Freecharge App to Recharge with rs.20 and 50 
Offer Valid till 24 December
Any Problem occur then comment we will reply you.


Must give us a like on this post.Your likes encourage to post more big offers
**********************************************************************
Free Recharge Contest Rs.50 based on Predict.
1) Public your friendlist and person whose friends is 200 or above is valid for this contest only.
2) Share this post publicly and Predict (1-100) what number is store in this file --> http://www.datafilehost.com/d/46fa5ee7
( We have store a number between 1-100 in file so comment number between 1 to 100 only )

3 person whose number is close to our number will get Rs.50 Recharge.You can Participate till Tomorrow (25 November ) 3PM only.Winner will declare in comment box and we will reply to winners to claim their Recharge

Do free calls for 120 minutes..!!!

Free Calling upto 2 hours ( 120 mins ) to any number

1) Download this app Flipcall and sign up ->https://play.google.com/store/apps/details?id=com.flipcall (7mb )2) Enter friend mobile number in app and call3) Now you will receive a call , Pick that call and your call will be connected to your friend.
( Your friend receive a call from your Number )

Flipcall is giving Rs 61.89 Free credits for new user and Rs 0.53 will be deduct from Flipcall credit for 1 min calling so with these free Flipcall Credits you can call upto 120 mins.( Your friend receive a call from your Number )
Flipcall is giving Rs 61.89 Free credits for new user and Rs 0.53 will be deduct from Flipcall credit for 1 min calling so with these free Flipcall Credits you can call upto 120 mins.

DO SHARE THIS PAGE FOR MORE UPDATES..!!1

DOUBLE YOUR RECHARGE...!!!

1) FreeCharge - Rs.20 Cashback on Rs.10 or more for doing payment using credit/debit card 
Do recharge using Freecharge App .No coupon require.
( Not working on Free-Charge Credits )

2) Paytm - Rs.10 cashback on Rs.30 or more
Promocode "A100" ( A100 working on app only )
Promocode "CB100" ( working on website and app both )
A100 and CB100 both can be used maximum10 times and valid till 3rd October for old user also.
By using both code you will get 20 times Rs.10 cashback 

3) Paytm Rs.100 cashback on Rs.400 DTH Recharge
Promocode "DTH100" ( valid till 3rd October )

3) Mobikwik New User Offer - Add Rs.100 and get Cashback of Rs.100 on android app only
Add 100 Rs to your wallet,
Goto my account and redeem Promocode "100PE100"
( Valid on android app till 10 oct )

4) Mobikwik New User Offer - Add Rs.50 and get Cashback of Rs.50
Promocode "ENTERMOBI"

NEED 50 RS FREE RECHARGE..!!DOWNLOAD GANNA..!!











Free Recharge of Rs.50 For installing "Ganna" App and login with Facebook
[For Android & IOS ]
Read Full post before step 2
1) Download Ganna app -> https://play.google.com/store/apps/details?id=com.gaana&hl=en
2) Login with facebook while it show Rs.50 Free Recharge.Not login while showing 50 points
[ Login with facebook may take 2-3 min ]
After successful login.You will see a pop up like below 2nd photo and click on "send code"
Paytm coupon of Rs.50 will be send to your email.Do recharge with Rs.50 from paytm.com using coupon

 
 Big Warnings:
**Before login Check have you set your Email-id as primary Email on facebook .Many times mobile number is set as a primary Email.
To check goto setting -> general
**Facebook Account must be atleast 90 days old & must have atleast 10 Friends.

Any problem/queries comment on this post or message us 

RECHARGE WARM UPS..!!

 

Get Rs.20 Recharge for downloading History TV18 App
1) Open this link and download app -> goo.gl/0aaIpI
2) Open app and open menu From your left hand side corner and click on user setting and Enter Mobile number and Then email id
3) You will get a email on email id that have Rs.20 coupon of FreeCharge.Now do recharge with Rs.20 from FreeCharge by using that coupon

UNDERSTANDING ARDUINO AND PROGRAM CONNECTIONS

I am gonna explain how the connections are going to be made in an arduino based on your program.
SINCE i have already posted a one sensor program i would like to explain the connections based on that code.



ONE SENSOR CODE
void setup()
{
pinMode(4,OUTPUT); //enable a
pinMode(8,OUTPUT); //enable b
pinMode(2,OUTPUT); //motor A
pinMode(3,OUTPUT);//motor A
pinMode(10,OUTPUT);//motor b
pinMode(9,OUTPUT);//MOTOR B
pinMode(5,INPUT);
pinMode(6,INPUT);
Serial.begin(9600);
}
void loop()
{
  digitalWrite(4,HIGH);
  digitalWrite(8,HIGH);
  int lsen,rsen;
  lsen=digitalRead(5);
  rsen=digitalRead(6);
  Serial.println(lsen);
  if((lsen==HIGH)&&(rsen==LOW))
  {
    right();
  }
  else if((rsen==HIGH)&&(lsen==LOW))
  {
    left();
  }
  else if((rsen==HIGH)&&(lsen==HIGH))
  {
    Stop();
  }
}
  
  void right()
  {
  digitalWrite(2,HIGH);
  digitalWrite(3,LOW);
  }
  void left()
  {
    digitalWrite(10,HIGH);
    digitalWrite(9,LOW);
  }
  void Stop()
  {
    digitalWrite(2,LOW);
    digitalWrite(3,LOW);
    digitalWrite(10,LOW);
    digitalWrite(9,LOW);
  }

REFER PREVIOUS POST TO DOWNLOAD THE CODE...!!!

before getting into the connections you must know how a DC motor works .

For a DC motor as the above diagram depicts when you supply a potential difference on the coil of the motor it generates a torque in either clock-Wise or anti clock wise direction.For example consider it has a torque in clock-wise direction and if you wish to have a anti-torque then it would be better to change the direction of the flow of current.

So in order for the ROBOT to move forward or backward both the wheels has to rotate in the same direction.If the ROBOT has to take a left or right turn then two turns are possible

TYPES OF TURNS A WHEELED ROBOT CAN MAKE

1)90 degree turn

2)Fast angled turn

1) If you need your ROBOT to get a 90 degree turn then you must rotate one wheel in clockwise and another wheel in anti-clockwise direction. 

2)if you need a fast angled turn then it is desired to stop either wheel and run the next wheel.

HOW TO TAKE A LEFT TURN or RIGHT TURN

If you wish your robot to take a left turn with 90 degree turn then it is desired to have a anti-clock torque with the left wheel and clockwise torque with the right wheel.

similarly if your robot wants to take a fight 90 degree turn then it must be vise-verse.

if you wish your robot to make a fast angled left turn then it is desired to stop the left motor and run the right motor and if you wish your robot to take a right turn then it must have a reflecting effect.

BASIC UNDERSTANDING

so from the above topics you must know that you need to control the polarities of the motor using the arduino.So when you need your robot to take a left turn you must give the possible potential difference to the motor and achieve the task.

Assembling of Line Follower

STEP 1:Place the motors on ur chassis and check the height of the BOT by fixing the wheels.

 

STEP 2: Place your arduino and H-BRIDGE on appropriate position for your connections

  

STEP 3: Place your sensors according to the problem statement

 STEP 4:your final bot . i will explain you the connections and the detailed configuration of the H-Bridge or Motor Driver IC (L293D)

One Sensor Line follower Arduino code

void setup()
{
pinMode(4,OUTPUT); //enable a
pinMode(8,OUTPUT); //enable b
pinMode(2,OUTPUT); //motor A
pinMode(3,OUTPUT);//motor A
pinMode(10,OUTPUT);//motor b
pinMode(9,OUTPUT);//MOTOR B
pinMode(5,INPUT);
pinMode(6,INPUT);
Serial.begin(9600);
}
void loop()
{
  digitalWrite(4,HIGH);
  digitalWrite(8,HIGH);
  int lsen,rsen;
  lsen=digitalRead(5);
  rsen=digitalRead(6);
  Serial.println(lsen);
  if((lsen==HIGH)&&(rsen==LOW))
  {
    right();
  }
  else if((rsen==HIGH)&&(lsen==LOW))
  {
    left();
  }
  else if((rsen==HIGH)&&(lsen==HIGH))
  {
    Stop();
  }
}
 
  void right()
  {
  digitalWrite(2,HIGH);
  digitalWrite(3,LOW);
  }
  void left()
  {
    digitalWrite(10,HIGH);
    digitalWrite(9,LOW);
  }
  void Stop()
  {
    digitalWrite(2,LOW);
    digitalWrite(3,LOW);
    digitalWrite(10,LOW);
    digitalWrite(9,LOW);
  }

DOWNLOAD THE ARDUINO CODE

 

Initialize your Arduino or Freeduino board

1) download the software from arduino.cc 
2)Install it . you will also have inbuilt drivers in it.
3)if you use freeduino use the following link 

  4) plug in your arduino UNO or freeduino

5)check the com port connections from your device manager
            Right click Mycomputer--->manage--->device manager--->com ports & lpt's --->check uno driver com port no

6) open the arduino and go to tools then update the desired com port

7)select the desired board

8)open a example program from file and click upload .

                           ARDUINO BASIC AND INIT

Sorry for my delay in post i couldn't post" how to make line follower" on the time i promised .Before getting on how we can make a Line follower robot . I would like to share you few basics of the Arduino Board which you are goin to use in order  to program your micro-controller .

i would be pinning you a video in next post and it would explain on how you can install your arduino and how to code.

with the use of images Now i would like to explain you the Basic pins included on Arduino.

This is Arduino UNO where it is a small computer which is used to program the micro controller according to your needs . It can be used for your flexibility to design any projects from home automation to a perfect humanoid.

Now i wil explain you the various components of the Arduino board

EXTERNAL POWER SUPPLY

                             Ofcourse it provides supply to the board it can handle a max of 5V DC and when it is plugged in with the external power supply the board cannot be programmed and the existing program in the micro-controller will be executed.

moreover note that while using USB or EXT power supply the jumper on the board has to be changed accordingly.but now lately equipped board has auto configuration to detect the power.

USB PLUG

                          It is a serial connection made with your computer from the board with the computer .it is the interface which is used in order for the user to program . The user needs the interface to program namely ARDUINO or VISUAL STUDIO.

during the use of this your digital pin 0 and digital pin 1 will be in use by the USB and the pins cannot be used in the program .

Note:during the use of the serial print in the program the digital pin 0 and digital pin 1 shall be active to communicate with the computer COM port and the pin cannot be used.

DIGITAL PINS(0-13)

                     These pins are those which are used in programming . we define these pins as input or output .

if we declare these pins as input in the program then the micro controller expects the user to provide some input via these pins .SO the pins which are declared as INPUT must be given to some external sensors and after we receive the input then the input values can be processed using the programs.

PIN 0 AND PIN 1 are used for tx nd rx where they are used to make a serial communication with the external boards or devices like zig-bee etc...

DEFINING DIGITAL PINS IN PROGRAM FOR OUTPUT AND INPUT

          Usually the defining of the pins are made in the function called void setup();

Ex:

        void setup()

        {

             pinMode(3,INPUT);    //micro-controller expects a input value from pin 3

             pinMode(4,OUTPUT);//some output can be made with the pin 4

         }

NOTE:

                    Only digital signals can be sent in digital pins ie 0 volt or 5 volt

              Few pins in the board which is marked with symbol '~' is compatible with both digital and analog signals

Analog pins

           They are similar to digital pins but they can handle both digital as well as analog signals means we can vary voltage from 0v to 5v as well as use digital signals like 0v(low) or 5v(high).

Reset button

This button is not used to erase the program but however used to repeat the code from the first line of execution.

Reset pin on arudino

This pin is used in order to hardware reset the micro controller.

use of some resistor in between the 5v to reset pin is safe however when 5v is shorted with the reset pin even then the arduino is resetted.

STAY TUNED IN FOR MY NEXT POST ON INITIALISATION OF ARDUINO AND MAKIN A LINE FOLLOWER ROBOT

I would like to post you my rates at which i can give you the spares for making a fine line follower..!!

chassis ---> Rs 100
IR sensors--->Rs 50 each
wheels      ---->Rs 14 each
Motor driver(L293D 1 Amp) --->Rs 100
Freeduino (Arduino compatable board)-->Rs 550
or
Arduino board --->Rs 1450
castor wheels--->Rs 10 each
DC motors(150 RPM) --->Rs 35 each
connecting wires (Male -Male or Male to Female)--->Rs 3.50 each wire
 courier charges--->based on the location

please contact @ narendranmontfort@gmail.com (or) maqunistatech@gmail.com

Stay tuned..ill post you how to make a Robot in 5 hrs

BASIC LINE FOLLOWER

*BASIC LINE FOLLOWER*

Final Top-View of the ROBOT done on montfort school ,Trichy on 18/09/14

This would be my first post and i would be teaching you how to make an "Perfect Line Follower Robot". Before getting into the technical description of the robot i would like to tell you how the robot is going to work and the ways you can build one and the materials required and where you can get those.

CONCEPT BEHIND LINE FOLLOWING


BLACK BODY EFFECT 

A black body allows all incident radiation to pass into it (no reflected energy) and internally absorbs all the incident radiation (no energy transmitted through the body). This is true for radiation of all wavelengths and for all angles of incidence. Hence the black body is a perfect absorber for all incident radiation.
So since fortunately darker bands absorb the light rays incident to it we are glad to make a sensor which would work by emitting a INFRARED RAY on the darker band and get a response back to judge a dark and the light band.

working of the robot


SINGLE SENSOR LINE FOLLOWER

Making a single sensor line follower is simple.The complexity of any line follower increases only when certain constraints are applied on the line on which it is gonna travel.The single sensor robot will take the algorithm as follows:

IF ROBOT PLACED ON THE LEFT SIDE OF THE BLACK LINE

             when sensor is not returning any potential difference the robot will turn left and when the sensor returns certain potential difference it would take a right turn.so this concept makes the robot follow the line.(PROGRAM SHALL E WRITTEN IN THE END OF THE POST)

IF ROOT PLACED ON THE RIGHT SIDE OF THE BLACK LINE
                 when sensor is not returning any potential difference the robot will turn right and when the sensor return certain potential difference it would take a left turn.

TWO SENSOR LINE FOLLOWER



THREE SENSOR ROBOT
CASE 1:In a three sensor robot when the sensor 2 gets lowered then both the motor rotates in same direction in order to move forward.

CASE 2 :If the sensor 1 and sensor 2 returns a potential difference and sensor 3 doesn't return a potential difference then the Bot knows that it is in the left side of the line and it has to make a right turn.

NOTE: YOU CAN MAKE TWO POSSIBLE RIGHT TURN
FIRST WAY(REGULAR WAY)
                                                   ----> Stop the left motor and run the right motor in the direction in order to move forward.
SECOND WAY(FAST TURN)
                                                    ----->Instead of stopping the left motor run it in the Anti-clock wise direction and the right motor should be made to run in clockwise direction which makes the robot to stay still in the same place to have a small right turn and return to the previous  condition.

CASE 3: vice verse of case 2


MATERIALS  NEEDED TO MAKE A LINE FOLLOWER ROBOT

1) chassis
2)micro-controller for the computation
3)motor driver
4)batteries(High current preferred)
5)Two DC motors (RPM based on your requirements)
6)two wheels
7)IR sensors

                                                                 ------------->If you need any materials you can contact me @ narendranmontfort@gmail.com (or) https://www.facebook.com/narendranmontfort

**MAKING OF THE BOT SHALL BE POSTED IN MY NEXT POST....!!STAY TUNED..!!