Build Your Own Line-Follower Robot with Arduino and L293D ( step-by-step guide)

[@tanujsharma6316]

Is arduino getting powered by those 4aa batteries??

[@343GuiItySpark]

yes, arduino and motor shield work as one. shield provied a 5V controlled current to the arduino

[@crappy_appy]

Yes but it will be better if separate power sources are used or these batteries drain out fast.

[@Robocraze]

Thanks Apurv! :)

[@diddys-biceps]

Can we use QTR sensor in place of IR sensor??

[@rohiths8524]

Which power source suitable for this robot?

[@Robocraze]

Hi Rohith, This line follower runs on 4 AA batteries.

[@timealukacs2591]

@@Robocraze how many volts does a battery have?

[@sureshpatil6511]

Hey, can u plz make a tutorial on the wiring for this? Thx!

[@Robocraze]

Thanks for the suggestion. We will try to post it soon! :)

[@sohampatil.]

Video link plz

[@gktech8220]

Can we make direct connection with l293d without motordriver

[@Robocraze]

Hi GK Tech, Yes, you can connect directly to the L293D chip itself using a breadboard or a vero board, using the motor driver shield is not mandatory.

[@manjumaurya4530]

Can it work with normal motors

[@Robocraze]

Yes this will work with any DC motor! :)

[@jayantsom5650]

I want to order this Robot fro your website. I want to know that is the arduino board pre loaded with program and code?

[@kritarthmohan7511]

Board is not pre-loaded but you can see the code here: www.robocraze.com/blog/robocraze-line-follower-robot.html

[@abdulqadir-fz6cf]

Hello sir I need ur help

[@Robocraze]

For more details, please check out www.robocraze.com/blog/robocraze-line-follower-robot.html In case you still face issues, drop us a mail. :)

[@priyankjadav_]

Hii, I made this line following robot and it absolutely worked for me thanks a lot!!! 🎉💐

[@Robocraze]

Glad to help! :)

[@Eddyke]

I wanted to learn how I can connect the sensors onto the motor shield. I don't know about the pin assignment

[@Robocraze]

Hello, To connect sensors to a motor shield, you need to use the digital or analog input/output pins available on the shield. The specific pins you should use will depend on the type of sensor you want to use and the specific motor shield you have.

[@Eddyke]

@@Robocraze Thank you. I figured it out

[@DudeGenine]

I will surely try and come again with you....

[@Robocraze]

:)

[@chaitanyagurram05]

@robocraze, I got 4 sensor pins but in the video I see only two being used.. What is the use of other two

[@Robocraze]

Which sensor are you referring to?

[@Beast_BanglaShorts]

I cannot connect female to female wires with the l293d bc my l293d doesn’t have those pins on it can you help???

[@Robocraze]

Hello, The pins will require soldering onto the board, or you can try using a breadboard as well.

[@gracehao5025]

Hi,it absolutely worked for me thank you so much!

[@Robocraze]

Thanks! :)

[@aligasco7206]

reference height arduino I want to know my room floor level how much height from other room in which video solution

[@Robocraze]

Hello! To measure the height difference between rooms using Arduino, you can use an ultrasonic distance sensor. Thank you for your question! :)

[@nikolatesla4555]

can u send video tutorial of connection of wirings for school purposes . thank you in advance

[@Robocraze]

Hello, We have attached a manual with detailed connection diagram and code in the description.

[@sondo223]

I want to add PID algorithm to the code, i understand the theory but i don't know how to connect it to the code

[@Robocraze]

Hmmm, that's a good idea for a video. Stay tuned to our channel for updates!!

[@krisnavenitogaru5237]

On which the line follower robot is moving??

[@Robocraze]

We did not understand this. Please elaborate.

[@angshumansaikia4798]

Can you please provide me the connections for the sensors... Please. The analog pins have been used up by the motor shield now where to insert the output pins of the sensors... Please help me...

[@Robocraze]

Hi Ⱥղցʂհմʍąղ, There is a breakout header on the motor driver shield for the A0 to A5 pins. Its located near the connector for the M3 motor. In the video you can pause at 5:15 and look in the bottom right-hand corner of the board A0-5 is labelled along with GND and +5v. Headers are not present by default so you can solder them manually.

[@lygiahuy8944]

hey how can i fix threshold was not declared in this scope

[@Robocraze]

Right before the setup function, the line int threshold=500; declares the threshold variable. Please ensure you have declared it in your code as well. Please refer to the code in the blog here: robocraze.com/blog/post/robocraze-line-follower-robot

[@lygiahuy8944]

@@Robocraze thx

[@muhammedyamenabdulhadi8840]

how do we write the double left quotation mark as shown in the coding?

[@Robocraze]

Hi Yamen, It is a normal double quote only (") not a left quotation. You may use the standard double quote used to denote string in C++.

[@yogevbashri1200]

hey i need some help i build everything but when i use the code and turn it on it's going in circles

[@Robocraze]

It could be bacause the motor you are using is of higher RPM

[@joaorito1400]

Hey man, i build the robot when when i put the code does not work... My code is exactly the same and its not working can u help me ?

[@Robocraze]

Hi, Can you please share details of the exact issue you are facing?

[@mahwishali6136]

There is no circuit diagram in the link and I really need it plz

[@Robocraze]

For more details, please check out www.robocraze.com/blog/robocraze-line-follower-robot.html In case you still face issues, drop us a mail. :)

[@MakeItFlyofficial]

Bro I checked it a hundred times there is no circuit diagram Robocraze is very bad and it’s products are low quality and fake 👎👎👎👎

[@mimi.giselle4]

Hiii how can I connect the switch

[@Robocraze]

Hello, The instructions provided with the kit can be referred if any doubts regarding assembly. Thank you.

[@leizapanta]

Used your code but my robot is not moving forward. where can i msg you so i can share my video? thanks.

[@IshantvirSingh]

can you solved that problem??? please tell me having same problem

[@Robocraze]

Hello, Please share a detailed query on [e-mail]

[@rohiths8524]

64khz or 1 khz for the motor?

[@Robocraze]

Hi Rohith, While configuring the AF_DCMotor object, 64KHz is used. You can refer to the blog at the link given below for the code and more details. www.robocraze.com/blog/post/robocraze-line-follower-robot

[@IshantvirSingh]

Robot is turning on. The code is uploaded successfully but the robot is not moving. Please help me to figure it out the solution

[@Robocraze]

Hello, please raise a ticket on support.robocraze.com with your detailed query and images, and our team will get back to you at the soonest!

[@hassaanali8624]

did u figured it out as i am facing the same issue?

[@pavanreddy4846]

Where can I get ir sensors in hyderabad

[@Robocraze]

We ship the sensors and kit all across India. To purchase, please visit our website www.robocraze.com

[@manojmishra1564]

Wow!!!!!!!!!! Greaaaat

[@Robocraze]

Thank you. :) Please visit our website (www.robocraze.com) for more cool DIY kits and products.

[@mahindasamarasinghe4498]

thi is success full?

[@Robocraze]

Yes Sir! For more details, please check out www.robocraze.com/blog/robocraze-line-follower-robot.html In case of any issues, drop us a mail to [e-mail]

[@IlhamDefraN]

that shield is blocking the digital output, meanwhile it is only provided analog output, i have project that need digital and annoyed by that shield

[@Robocraze]

Please consider using an L293D module instead of the shield.

[@adnanrafimohammed1311]

I did every thing it's moving ........but it's wheel are moving in opposite direction and it's is not following the black line what to do plzzz help ............What to do

[@Robocraze]

Hi! You will have to check your code. Debug the code wheel by wheel. That should help!

[@usamaaltaf5347]

In code After compiling its giving error of no such directory

[@343GuiItySpark]

open arduino software, check for libraries, manage libraries. and there, search for adafruit. select the adafruit motor library. wait for it to get downloaded and installed

[@Robocraze]

You can download the library from the following link: goo.gl/fScTIj After downloading the zip for the library, go to the Arduino IDE > Click on the sketch menu on the menu bar > Select Include library from the dropdown menu > Click on the add .zip option and then select the library zip file. This should install the library for you.

[@emondas31]

after loading a program does not work line follower robot?plz help me

[@Robocraze]

For more details, please check out www.robocraze.com/blog/robocraze-line-follower-robot.html In case you still face issues, drop us a mail. :)

[@sparveen8078]

I need program plz..

[@Robocraze]

For more details, please check out www.robocraze.com/blog/robocraze-line-follower-robot.html

[@sparveen8078]

Thank you

[@varunj9598]

can you add the link for the code

[@Robocraze]

Hi Varun, the link for the blog is given in the video description. You can find the code in the blog.

[@alielgareb2500]

I want the code in a file to delete🙏

[@Robocraze]

robocraze.com/blogs/post/robocraze-line-follower-robot Please refer to the above link for the code.

[@Just_yog]

Pls provide circuit diagram and code

[@Robocraze]

Hi! For details, please check out our blog: www.robocraze.com/blog/robocraze-line-follower-robot.html

[@jabbaransari4362]

This program is not working. I have different type of motor 1000rpm are used... please reply me

[@Robocraze]

For more details, please check out www.robocraze.com/blog/robocraze-line-follower-robot.html In case you still face issues, drop us a mail. :)

[@quadriquadri1655]

Sir my robot follows it backward and it also goes out the line can you give your contact so that i can complete my project please Thank you

[@Robocraze]

Hi, This indicates that the motor connections are opposite. Reverse the motor connections on the motor driver and it should drive forwards. If it is unable to follow the line and turns in the opposite direction, the left and the right control pins are reversed. Swap the left and right motor control pins to correct for that.

[@shashankkarn]

can i plz get its code

[@Robocraze]

For more details, please check out www.robocraze.com/blog/robocraze-line-follower-robot.html

[@hajarsikal3527]

this robot is unicycle or tricycle!!

[@Robocraze]

Hi, This bot uses two wheels attached to motors and one castor wheel in the front.

[@hajarsikal3527]

@@Robocraze hello i now but it is unicycle !!!

[@munagaachuthkumar7878]

Four wheeler line fallower robot video sir

[@Robocraze]

Hi! We have taken your suggestion. We will schedule it! :) Thanks.

[@munagaachuthkumar7878]

@@Robocraze when sir

[@sankeerthan9066]

bro i need the code pls!!

[@Robocraze]

Hi Sankeerthan, the link for the blog is given in the video description. You can find the code in the blog.

[@gguruji693]

Code is not opening

[@Robocraze]

robocraze.com/blogs/post/robocraze-line-follower-robot Please refer to the above link for the code.

[@AbdurRehman-rb1yw]

here i face problem to verify line number 3 #include no such file or directory. i dont know how to tackle it.

[@Robocraze]

You can download the library from the following link: goo.gl/fScTIj After downloading the zip for the library, go to the Arduino IDE > Click on the sketch menu on the menu bar > Select Include library from the dropdown menu > Click on the add .zip option and then select the library zip file. This should install the library for you.

[@AbdurRehman-rb1yw]

Thanks alot sir. I have done it. Took certain time but finally done it.

[@Robocraze]

@@AbdurRehman-rb1yw Great, good to know! :)

[@abhijeet.ai_]

code for the bot @Robocraze

[@crappy_appy]

Please check out www.robocraze.com/blog/robocraze-line-follower-robot.html

[@Robocraze]

Thanks Apurv! :)

[@hemanthkovvali8183]

sir we want 4 wheerlers videos

[@Robocraze]

Hi! We have taken your suggestion. We will schedule it! :) Thanks.

[@RakshithPrakash]

Arduino is an overkill for this , you can simply use a opamp comparator

[@343GuiItySpark]

this is for beginners.

[@Robocraze]

Hi! This is a beginner video for Arduino learners, similar to a 'Hello World' program in most programming languages.

[@shojibbhuiyan2788]

give the code of this please

[@Robocraze]

The code is in the link mentioned in the description below.

[@parvizss]

The link is not worked yet

[@abhijeet.ai_]

code for the bot

[@crappy_appy]

Please check out www.robocraze.com/blog/robocraze-line-follower-robot.html

[@Robocraze]

Thanks Apurv! :)

[@ilhamsaputrajati9767]

where your sensor video man?

[@Robocraze]

The sensor is being connected in the same video at 4:03 time.

[@wahyudin3487]

Please share your code

[@crappy_appy]

Please check out www.robocraze.com/blog/robocraze-line-follower-robot.html

[@Robocraze]

Hope this helps! :)

[@roko7661]

Is this a guy or .....??? Does HE have long nails??????