How to Make a Line Follower Robot using Arduino | IR Sensor | Easy to Make Line Follower Robot 

the code cannot be downloaded. ​How can I get it? ​Please, I need it for a student project ​Thanx

You can get the code on the above stated link only. That is the link to my instructable on the line follower robot. Just scroll down to the coding section and you can get the Arduino program file there which can be downloaded...

Your linoBot_v1.0_1 program one problem

[#include ] is not verify

Well, for that you will need to download the library from GitHub. After downloading the zip file, include it in the sketch. You can find detailed solutions to this aspect on the internet. Kindly make use of that...

Thanks

Thank you

Thanks for watching. Keep up with us to get to know more projects. If your robot is working kindly send it to gargaarav79@gmail.com

Please help me

How did you do it? Can you teach me?

Thanks for watching ;)

Thank you, bro...

Great! Please subscribe and give a thumbs up to the video...

can it move through the line gap??

I didn't understand what you mean to say...

Could I ask you a question about the connections? I am having a hard time figuring out what wires to use to connect the motors, and I wanted to make sure I hooked up my battery pack to the switch correctly. Thank you in advance!

Great job!

Head over to my article regarding the bot on instructables.com and u will find it there! It is in the description!

Thanks

You are welcome!

Huh! Thanks, Broo...

Thanks... Please subscribe...

Tech Nuttiez I subbed upload more videos to gain more subs

Glad to hear that

You need to solder the pins on the motor driver board...

Yes, until you are able to power your motors and Arduino board, it shall be fine. Also, when you are done building your project, do upload it in the "I Made It" section here: www.instructables.com/Line-Follower-Robot-Using-Arduino-2/

Cool... 👍👍👍

Yeah, Sure u can. Just give a link to my channel in the description!

The motor driver has certain I/O pins connected to the Arduino board, where the IR sensors can be plugged in!

You can use any kind of wire. The objective is to conduct electricity. The type of wire depends on the availability. Thank You

Thanks for watching. The Arduino doesn't have to remain connected to the laptop all the time. We must upload code to the Arduino board through the IDE itself and then can disconnect the board from the laptop. We will have to just use a power supply to keep the board alive :)

Hello, First try to connect both the DC motors one by one to the battery and check whether it is working or not. If it is working then check whether the pin to which you have connected your motors on the Arduino are the same as the variables defined in ur code. Your variable values might be different than mine becoz you may connect to a different pin so define according to your connections. Even if they don't work then you just write a new code file to just run the motors. You can find that sample code on the internet. By using this you will surely get results. Aarav Garg

definately different

The negative from the battery holder goes directly to the shield. For the positive just add the switch in between the positive wire connection!

You can surely use a 9v battery as an Arduino can accept 9v easily. Thanks for watching...

Arduino ISP

Instead of changing situations take my code and change the motor movements. That should probably work...

Thanks.. The link to the circuit diagram and the code along with all the instructions is clearly attached in the description...

@@TechNuttiez i only see the code in your description...please try to add the circuit diagram

The circuit diagram is also present in the link that I have mentioned in the description of the video. That is the link to my instructable where you can find all details like the components, code and also the circuit diagram... Thank you!!

it is a black insulation tape....

Yeah sure. Even a 4wd robot can take 90 degree turn with proper programming. The angle has nothing to do with the no of wheels

@@TechNuttiez so the programming used in this video will surely help me thank you brother

Great! Do share with the right audience for better reach! And don't forget to smash that subscribe button!

Put a grip to wheels

It is a power issue. Try using a better and a newer battery or a better power source. Or try using motors with better gearboxes!

Your robot may not work in the exact same code configuration. You might have to make changes...

What problem is there?

You need a higher power supply. Also, try increasing the rpm of the motors in the code...

@@TechNuttiez ty

Head over to my article regarding the bot on instructables.com and u will find it there! It is in the description!

Gujarathi Galli Koti, Hyderabad, Telangana 500095 goo.gl/maps/YE8zoGC1LH92

Just connect it to any analog pin. The ports may not be readily available but you may have to solder male pin headers...

If you want to use L293D mini board you can. You have to connect motor pins to IN1, IN2, IN3, and IN4. Then you will have to connect the board's output pins to the Arduino board. You will have to change the code accordingly...

Thanks a lot

It can be in the program or your sensors too. Try changing the program to match your robot. Also try tweaking the rotary potentiometers on the IR sensors till it works!

www.instructables.com/id/Line-Follower-Robot-Using-Arduino-2/

Just connect the left two motors and consider it as the left motor and the right two motors as the right motor after connecting it... Rest all same...

Give the wheels a manual push at the start! It is mostly a battery or a power issue! Try using a better power source or better motors!

Yeah, you can do that by changing the MAX_SPEED variable in the code!

@@TechNuttiez 👍thank you

yeah... it's quite simple... just go to the tools in your Arduino IDE and for the Arduino board select the right board that you are using... That should mostly resolve the problem.. Even worse sometimes loose or faulty connections or cables also lead to such errors...

I didn't get your doubt. Please state the problem more clearly.

By the way, congrats as you are my hundredth comment...

Actullay my robots both ir sensor senses black it keeps moving and when it senses white color it stops...that is it works in reverse process

@@TechNuttiez my robo works in reverse process

@@Techy004 may there are 2 types of ir sensors in the market one which gives 0 when it detects black color and other gives 1 on detecting black color'

Check out my Instructable link in the description!

You have to first go to GitHub and download the AF motor library. After doing that you can include the library in your program. You can find very good detailed documents on how to do this on the web...

Everything in the description.. Pls have a look...

Just reverse the conditions or the IF values.... That would probably solve it..

It may not be the fault on the IR sensor until you are connecting it directly to Arduino without using resistors...

Which resistor should i use?

May I know exactly which encoder?

@@TechNuttiez black encoder, we put on the back of the yellow motor

@@yahyayozo8660 Ignore that... That does nothing! It's just like that and has no use!

@@TechNuttiezthank you so much , that really was confusing me

@@yahyayozo8660 Anytime buddy :) Do subscribe and also ask your friends to! Tag me on social by using @technuttiez :D

www.instructables.com/id/Obstacle-Avoiding-Robot-Using-Microcontroller-Ardu/

Tweak the IR sensor potentiometers!

Reverse the line sensing algorithm!

www.instructables.com/id/Line-Follower-Robot-Using-Arduino-2/ is the link where you can find the code. For uploading, connect your arduino board, select your port in the arduino IDE and just click the upload button...

You have to try to find out where the error is. First try and check whether the motors are working by directly connecting the motors to the power source. Then try to check whether the sensors are working by trying to print their values on the serial monitor. Then finally check in the code of the line follower robot whether the pins specified in the code are the same as you have connected to the Arduino. If all this fine then try to check the error in the code by reading it fully.

@@TechNuttiez i have already fixed it the battery holder that came with the kit didn't work

Awesome bro.

I don't remember the exact or sensor model that I used, but I am sure that you can use any of the or sensors available in the market without having to make any changes in the program of the robot...😁😁😁

Try to reverse the conditions of ur program. Basically wherever there is HIGH convert it to LOW and wherever there is LOW convert it to HIGH. This shd probably solve your problem.

@@TechNuttiez but the problem is that the sensor is sensing ever thing tinted of sencing white or black

@@TechNuttiez do I have to change value

Ya try changing less than 400 to 0 and greater than 400 to 1

@@TechNuttiez still not working brooo

You have to go to GitHub and then download the library. That's the only way...

Just go to github and download the AFmotor library and include it in your program. You can find many articles and videos related to this... Kindly make use of that...

@@TechNuttiez where is the github

any link?

github.com/adafruit/Adafruit-Motor-Shield-library Just go to the above mentiond link and you will get the library page. Download the library as a zip file. Then in your arduino IDE, you will have an option of include at the top. Click on it and then click add zip file. Just add the downloaded zip file and you are all set to go... Thanks for watching. Make sure to subscribe...

Hi, You can find program here, www.instructables.com/id/Line-Follower-Robot-Using-Arduino-2/

Yeah sure why not ;)

www.instructables.com/id/Line-Follower-Robot-Using-Arduino-2/

Please help me i have my exhibition

It can be fine with 6v - 12v. Best would be using 9v.

@@TechNuttiez only 1 battery would be enough

How to make line

Will it work in any line

www.instructables.com/id/Line-Follower-Robot-Using-Arduino-2/

www.instructables.com/id/Line-Follower-Robot-Using-Arduino-2/

www.instructables.com/id/Line-Follower-Robot-Using-Arduino-2/

SAUMYA SRIVASTAVA /* This is a line following robot car using Adafruit motor shield and 4 line detecting sensors. Motor speed ranges between 0 to 255 rpm. Sensors are set in the following format in the front of the car: rightBackgroundDetector | rightMiddleLineDetector | leftMiddleLineDetector | leftBackgroundDetector This code will assume you are starting on a white background with black line; then moving into black background with white line; and when it reach to the end with all white strip it will stop. You can set the following variables: MAX_SPEED 107 //Maximum speed of motor MIN_SPEED 0 //Minimum speed of motor TURN_SPEED 97 //Turning speed of motor THRESHOLD 500 //Threshold to detect the line sensor, greater than 500 means it detected black line. bg_right A5 //Port for right background detector ir_right A3 //port for middle right line detector ir_left A2 //port for middle left line detector bg_left A0 //port for left background detector got questions? twitter @ranchmobile */ #include #define MAX_SPEED 107 #define MIN_SPEED 0 #define TURN_SPEED 97 #define THRESHOLD 500 #define bg_right A5 #define ir_right A3 #define ir_left A2 #define bg_left A0 AF_DCMotor motor1(1, MOTOR12_1KHZ); AF_DCMotor motor2(4, MOTOR12_1KHZ); boolean leftFlag = false; boolean rightFlag = false; boolean bgLeftFlag = false; boolean bgRightFlag = false; int leftSpeed = 0; int rightSpeed = 0; boolean isInBlackBackground = false; boolean isRobotStarted = false; boolean isStop = false; void setup() { Serial.begin(9600); pinMode(ir_left, INPUT); pinMode(ir_right, INPUT); pinMode(bg_left, INPUT); pinMode(bg_right, INPUT); leftSpeed = TURN_SPEED; rightSpeed = TURN_SPEED; } void loop() { checkStatus(); if(!isStop) { //Serial.println("Running ... "); if(isInBlackBackground) { followLineOnBlackBG(); } else { followLineOnWhiteBG(); } } else { halt(); } delay(50); } void checkStatus() { bgLeftFlag = isBackgroundLeftDetectorOnBlack(); bgRightFlag = isBackgroundRightDetectorOnBlack(); leftFlag = isMiddleLeftDetectorOnBlack(); rightFlag = isMiddleRightDetectorOnBlack(); isInBlackBackground = isBlackBackground(); if(!isRobotStarted) { isRobotStarted = isStartDetected(); } if(!isStop) { isStop = isStopDetected(); } } boolean isStartDetected() { return true; /* if(bgLeftFlag && bgRightFlag && leftFlag && rightFlag) { return true; } else { return false; } */ } boolean isStopDetected() { if(!isInBlackBackground) { return false; } if((!bgLeftFlag) && (!bgRightFlag) && (!leftFlag) && (!rightFlag)) { return true; } else { return false; } } boolean isBlackBackground(){ if(!isInBlackBackground) { if(bgLeftFlag && bgRightFlag && ( (!leftFlag) || (!rightFlag))) { isInBlackBackground = true; } } return isInBlackBackground; } void speedSet(int left, int right) { motor1.setSpeed(left); motor2.setSpeed(right); } //Follow on White background void followLineOnWhiteBG() { if(isSteepLeftTurnOnWhiteBG()) { turnLeftSteep(); } else if(isSteepRightTurnOnWhiteBG()) { turnRightSteep(); } else if (isLeftTurnOnWhiteBG()) { turnLeft(); } else if (isRightTurnOnWhiteBG()) { turnRight(); } else if (isSlightLeftTurnOnWhiteBG()) { turnLeftSlight(); } else if (isSlightRightTurnOnWhiteBG()) { turnRightSlight(); } else if (isStrightOnWhiteBG()) { goSlow();//goStright(); } else { goSlow(); } } //Follow on Black background void followLineOnBlackBG() { if(isSteepLeftTurnOnBlackBG()) { turnLeftSteep(); } else if(isSteepRightTurnOnBlackBG()) { turnRightSteep(); } else if (isLeftTurnOnBlackBG()) { turnLeft(); } else if (isRightTurnOnBlackBG()) { turnRight(); } else if (isSlightLeftTurnOnBlackBG()) { turnLeftSlight(); } else if (isSlightRightTurnOnBlackBG()) { turnRightSlight(); } else if (isStrightOnBlackBG()) { goSlow(); } else { goSlow(); } } boolean isSteepLeftTurnOnWhiteBG() { boolean steepTurn = false; if((!bgRightFlag) && (!rightFlag) && (leftFlag && bgLeftFlag)) { steepTurn = true; } else if((!bgRightFlag) && (!rightFlag) && (!leftFlag) && bgLeftFlag) { steepTurn = true; } return steepTurn; } boolean isLeftTurnOnWhiteBG() { return ((!bgRightFlag) && (rightFlag && leftFlag && bgLeftFlag)); } boolean isSteepRightTurnOnWhiteBG() { boolean steepTurn = false; if((!bgLeftFlag) && (!leftFlag) && (rightFlag && bgRightFlag)) { steepTurn = true; } else if((!bgLeftFlag) && (!leftFlag) && (!rightFlag) && bgRightFlag) { steepTurn = true; } return steepTurn; } boolean isRightTurnOnWhiteBG() { return ((!bgLeftFlag) && (rightFlag && leftFlag && bgRightFlag )); } boolean isSlightLeftTurnOnWhiteBG() { return ((!bgLeftFlag) && (!leftFlag) && rightFlag && (!bgRightFlag)); } boolean isSlightRightTurnOnWhiteBG() { return ((!bgLeftFlag) && leftFlag && (!rightFlag) && (!bgRightFlag)); } boolean isStrightOnWhiteBG() { return (leftFlag && rightFlag); } boolean isSteepLeftTurnOnBlackBG() { boolean steepTurn = false; if((bgRightFlag) && (rightFlag) && (!leftFlag && !bgLeftFlag)) { steepTurn = true; } else if((bgRightFlag) && (rightFlag) && (leftFlag) && !bgLeftFlag) { steepTurn = true; } return steepTurn; } boolean isLeftTurnOnBlackBG() { return ((bgRightFlag) && (!rightFlag && !leftFlag && !bgLeftFlag)); } boolean isSteepRightTurnOnBlackBG() { boolean steepTurn = false; if((bgLeftFlag) && (leftFlag) && (!rightFlag && !bgRightFlag)) { steepTurn = true; } else if((bgLeftFlag) && (leftFlag) && (rightFlag) && !bgRightFlag) { steepTurn = true; } return steepTurn; } boolean isRightTurnOnBlackBG() { return ((bgLeftFlag) && (!rightFlag && !leftFlag && !bgRightFlag )); } boolean isSlightLeftTurnOnBlackBG() { return ((bgLeftFlag) && (leftFlag) && !rightFlag && (bgRightFlag)); } boolean isSlightRightTurnOnBlackBG() { return ((bgLeftFlag) && !leftFlag && (rightFlag) && (bgRightFlag)); } boolean isStrightOnBlackBG() { return (!leftFlag && !rightFlag); } boolean isMiddleLeftDetectorOnBlack(){ int sensorValue = analogRead(ir_left); if (sensorValue > THRESHOLD){ return true; //return true for black } else{ return false; } } boolean isMiddleRightDetectorOnBlack(){ int sensorValue = analogRead(ir_right); if (sensorValue > THRESHOLD){ return true; //return true for black } else{ return false; } } boolean isBackgroundLeftDetectorOnBlack(){ int sensorValue = analogRead(bg_left); if (sensorValue > THRESHOLD){ return true; //return true for black } else{ return false; } } boolean isBackgroundRightDetectorOnBlack(){ int sensorValue = analogRead(bg_right); if (sensorValue > THRESHOLD){ return true; //return true for black } else{ return false; } } void goStright(){ Serial.println("go straight "); speedSet(MAX_SPEED,MAX_SPEED); motor1.run(FORWARD); motor2.run(FORWARD); delay(250); } void goSlow(){ Serial.println("go slow "); speedSet(TURN_SPEED,TURN_SPEED); motor1.run(FORWARD); motor2.run(FORWARD); } void turnLeft(){ Serial.println("turn left "); speedSet(MIN_SPEED,TURN_SPEED); motor2.run(FORWARD); delay(250); } void turnRight(){ Serial.println("turn right "); speedSet(TURN_SPEED,MIN_SPEED); motor1.run(FORWARD); delay(250); } void turnLeftSlight(){ Serial.println("turn left slight"); speedSet(MIN_SPEED,TURN_SPEED); motor2.run(FORWARD); } void turnRightSlight(){ Serial.println("turn right slight"); speedSet(TURN_SPEED,MIN_SPEED); motor1.run(FORWARD); } void turnLeftSteep(){ Serial.println("turn left steep"); speedSet(MIN_SPEED,MAX_SPEED); motor2.run(FORWARD); delay(500); } void turnRightSteep(){ Serial.println("turn right steep"); speedSet(MAX_SPEED,MIN_SPEED); motor1.run(FORWARD); delay(500); } void reverse(){ Serial.println("reverse "); motor1.run(BACKWARD); motor2.run(BACKWARD); } void halt(){ Serial.println("STOP"); motor1.run(RELEASE); motor2.run(RELEASE); }

No, I have used c++ programming language... Basically it is c++ but it is coded in the Arduino IDE...

Okkk. I used programs in first time... Okk

you please send me your phone number so we solve the problem

You can contact here:- gargaarav79@gmail.com

It can be used in any type of arduino board...

Check my instructable. You will get the code there. www.instructables.com/id/Autonomous-Line-Follower-Robot-Using-Arduino/ Thank you for watching

Thanks bro

Make sure to subscribe...

If there is a problem right click on the downloaded file and use - open with "Notepad" and then copy the code and paste in your Arduino file!

Hi, You can find program here, www.instructables.com/id/Line-Follower-Robot-Using-Arduino-2/

Sir please response fast

What error is coming?

Sir

Plss reply

You can get the parts on Amazon...

Sir not at all some parts not available on amazon like chasis ,,IR SENSOR ,,BATTERY HOLDER sir plss help I have to make this project can I get your watshup number or mobile number ?? I need information reply plsss

And sir at Amazon can I get set of parts of line follower robot.if yes then plss send link . All parts at a set

Yeah sure... I will add the link to my instructable in the description where all the instructions are listed down step by step...

Tech Nuttiez waiting for it sir to start my this work

And also please say about the arudino board voltage

You can give a 9v supply using a 9v battery or use a 12v jack. You can also give 5v power supply. All these should work just fine...

sir i gone through your instructables but there is no code on that link sir

The code can be found here- www.instructables.com/id/Line-Follower-Robot-Using-Arduino-2/

Sorry for the delay but I will get back to everyone quickly...

www.instructables.com/id/Obstacle-Avoiding-Robot-Using-Microcontroller-Ardu/

Yes, check your inbox :)

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