Line Following / Tracking Robot Car (Arduino and QTR-8 Sensor)

In this tutorial, you will make arduino line following / tracking robot. This tutorial involves building a line follower robot with an QTR-8 Infrared Sensor.
Required Hardware:
1x Arduino UNO R3:
bit.ly/2xt9MVk
amzn.to/2LZr6t4
1x L293D Motor Drive Shield:
bit.ly/2H7vmy9
amzn.to/3qADuic
QTR 8 Infrared Sensor:
www.pololu.com...
2x Wheel and Gear Motor:
bit.ly/2RXAWLS
amzn.to/2M2pChV
3 in 1 Jumper Wire:
bit.ly/2J6de9E
amzn.to/3doetmT
2WD Robot Car Chassis Kit:
bit.ly/2sqIHgy
amzn.to/3s1ptur
Recommended Items:
Use Your Muscles in Project - amzn.to/3wdL45C
37 Sensor & Module Packages - amzn.to/3m66WeQ
Try this Robot Arm - amzn.to/3fq8DCl
Best Resin 3D Printer - amzn.to/39tY8KB
Arduino Compatible Kits - bit.ly/2J2AFF7
- Download AFMotor.h library: learn.adafruit...
Uncompress the ZIP file onto your desktop
Place the AFMotor folder into your arduinosketchfolder/libraries folder
Rename the uncompressed folder AFMotor
- Download QTR-8 library: github.com/pol...
Rename the folder “qtr-sensors-arduino-xxxx” to “QTRSensors”
Drag the “QTRSensors” folder into the “libraries” directory inside your Arduino sketchbook directory
Source Code: github.com/Mer...
Connections :
- DC Motors connect to the Motor Shield
- Left Motors connect to M1
- Right Motors connect to M2
- The QTR-8 Sensor Connections
The Sensor VCC connect to the Arduino +5V
The Sensor GND connect to the Arduino Ground
The Sensor pin 2 connect to the Arduino Analog 0
The Sensor pin 3 connect to the Arduino Analog 1
The Sensor pin 4 connect to the Arduino Analog 2
The Sensor pin 5 connect to the Arduino Analog 3
The Sensor pin 6 connect to the Arduino Analog 4
- Battery and on / off button connection
The (+) from the battery is connect to a leg of the button
Connect a cable to the other legs of the button. This cable is for Motor Shield (+)

[@maker101io]

Source Code: github.com/MertArduino/Arduino-Line-Following-Robot Recommended Items: Use Your Muscles in Project - amzn.to/3wdL45C​ 37 Sensor & Module Packages - amzn.to/3m66WeQ​ Try this Robot Arm - amzn.to/3fq8DCl​ Best Resin 3D Printer - amzn.to/39tY8KB​ Arduino Compatible Kits - bit.ly/2J2AFF7

[@ssiddhaarthroboticsandauto1230]

i am getting this line as error QTRSensorsRC qtrrc((unsigned char[]) { A4,A3,A2,A1,A0} ,NUM_SENSORS, TIMEOUT, EMITTER_PIN); help me out

[@clubtechnologiesnumeriques]

i am getting this line as error QTRSensorsRC qtrrc((unsigned char[]) { A4,A3,A2,A1,A0} ,NUM_SENSORS, TIMEOUT, EMITTER_PIN); help me out

[@erembirkan6388]

Mert it is so nice to see Turks running the robotics! I love the stuff you are doing,

[@TNG88]

many thanks for this great sharing :-). To new readers: you must use the OLD QTR-sensor v3.0.1 from on Aug 9, 2018. V4 is rewrote according to Pololu BrandonM. The error is "QTRSensorsAnalog does not name a type" if using V4

[@bechirjradi5275]

thank u for this great comment

[@itsjpr999]

ur a god bro!

[@harshithsgowda68]

Thanks a lot bro

[@nihalkeetha]

Even its great that you are saying how to install library in the same video seriously bro u have a very god thinking skills

[@ajtheinventor3998]

Sup!

[@osmanbelder1483]

bu konuda izlediğim en anlaşılan vide tebrik ederim

[@nihalkeetha]

Dude your awsm man you just created ur own webpage.. though your subscribers be less but you have all the things which a pro you tuber has like knowledge, webpage, cool fans like me and all

[@nihalkeetha]

You deserve it bro

[@gorkemozgurgenc2700]

Türk olduğunu tahmin etmemiştim saol çok iyi video

[@brayansantos6852]

this video helped me get a good grade on my final. thanks man !

[@weekendprogrammer7545]

Brayan Santos Did it work without out USB

[@brayansantos6852]

yeah it did, just make sure you use a higher voltage battery I used a 9v battery in my case

[@pedritoevil]

Sketch uses 4056 bytes (12%) of program storage space. Maximum is 32256 bytes. Global variables use 63 bytes (3%) of dynamic memory, leaving 1985 bytes for local variables. Maximum is 2048 bytes.

[@tamiltechthivvyan5979]

please put the code

[@avinashraj4102]

U r great thanks for this wonderful video I was searching for this video finally I got it's such a wonderful video better than any other video of the same kind thank you

[@metetabanl4467]

çok eğitici bir video olmuş tebrik ederim.

[@DTVideom]

Why did you connect it to analog pins when giving 8rc digital output?

[@engineered_insanity]

Thats a very detailed video. Thanks for the code and all too

[@hamzarehman112]

what is the distance between the sensor and the surface????????

[@sumeshkumar9086]

also sir about drone like robot controlled by android or voice detection sensor and ur explanation is superb sir and thanku sir

[@ogjarheadd]

I have the Arduino software version 1.8.16 and a lot of lines in the code have error messages but i followed the instructions exactly as they were on the video. I have both libraries installed but there are still error messages. Could you possibly update the code?

[@wamiqfahim9123]

Phenomenal actually. Would appreciate if you could explain the coding behind the PD.

[@wamiqfahim9123]

Oh I know what you mean. Just trying to learn the concept of PID. it will most probably help.:D

[@kdsatya_6]

can u help me?, i always get Compilation error: no matching function for call to 'QTRSensors::QTRSensors(unsigned char [5], int, int, int)', what things need to change?, ASAP pls 🙏🙏

[@osmanbelder1483]

siyah zemin beyaz çizgi ayarı nasıl yaparız kodu inceledim bulamadım

[@dipanshuaggarwal7089]

made me make this project bro! great for giving the program thnx bro!

[@mashrafi_m]

Seriously bro, AWESOME!!!!

[@NaraBage]

can i use tcrt5000 sensor instead of qtr sensor and use the same code?

[@ejazanjum1498]

MERT KILIC I AM YOUR FANNNN 👏👏👏👏

[@saliksheraz6236]

Awesome work bro

[@nafisfuadjim4817]

Can this robot only follow a continuous black line without any gap???? if there is a gap of white (5 cm) in the main black line of the track..then will this robot follow it?

[@akbarrajani121]

Thank you very much for your work

[@jeyapravin5775]

The programming part is very difficult to understand. Can you suggest this line follower with the help of XOD.

[@annietirado5198]

Thank you so much! a blessing for me!

[@codingtimes3199]

tres bon projet et bien fait

[@shraddhanaikade7777]

Hie can u plz upload vdo for learning a Salesforce from scratch

[@iqrakhan8824]

Thanku tomorrow is my practicle

[@manavsaini1920]

What you have put at last a yellow box like thing? At 8:15 in video.

[@altaykilic2142]

Those are DC Motors.

[@priyavrattripathi8795]

i am unable to get qtr 8 rc sensor instead i am using normal ir sensor that has only 3 pins GND, VCC can you please tell me how to use it please

[@vstop2176]

priyavrat tripathi same as a0 to a5 and combine all gnd and vCc and used

[@coralied506]

hi ! I appreciate very much your video, it is one of the most precise that I could find, I have the sensor but I do not know where I have to put the resistance provided with? thanks a lot for your help :)

[@ratnesh5630]

Plz tell me How to use IR sensor Instead of QBR sensor

[@berkaydikbayr925]

As Bayrakları as as as :)

[@Anaskhan-hp8bo]

the link which one you leave it here its does not working plzzz you also see the code sourse website

[@Wanderlust1342]

which batteries are best for this project?

[@mohamedrakha9766]

The code is great but why it waits around 10 seconds then start ?

[@abhijithab5086]

Wow amazing🤩

[@petermaker76]

like sound sensor,gas sensor and ultrasonic sensor

[@MyChannel-vw9cy]

Veuillez poster plus de vidéo

[@codingtimes3199]

Can you build a trash can which moves only when we throw(cast) a garbage next to her?

[@rohitdev5204]

in qtr sensor pin 6 name is also CLP

[@mathewgigi7251]

Only one motor is working for me ,can u make a video on possible corrections

[@anaeliv4105]

Same problem here, did you find a solution? :(

[@saswatrath4646]

@@anaeliv4105 Did find any solution

[@neilmitra4627]

Quick question, how did you add the lights? I subbed btw....Amazing vids.:)😀

[@gauravyfrkumar8884]

From where i will get qtr -8 rc reflectance sensor please, suggest I have gone to all places in my hometown patna , but i don't found this sensor

[@NayeemSharker]

only right motor is working

[@juliaaalbers6242]

How to make the robot wireless, you send the code to the arduino with the laptop, but if you remove the usb connection, he does not do anything anymore

[@akbarrajani121]

Love the music. What song is it?

[@akashbansal3815]

Please make a line follower with l293d and simple our sensors.

[@sikawarsito11341]

How to make a detection robot and fire extinguisher (line flower)

[@laserelectronic7028]

can you make one robot with line follow +sound follow +opsticals+Bluetooth and ir control robot

[@TausifSamin]

How can I make the robot follow a white line on a black surface? Could you please show me how to tweak the code?

[@xravern4617]

Can you provide modifications for l298n?😊

[@Sestenise]

Harika video emeğine sağlık! Peki aracın daha hızlı gitmesini ve aynı zamanda daha hızlı tepki vermesini nasıl sağlarız?

[@gokulakrishna6333]

Can we replace the motor shield with motor driver

[@carlosaparicio4855]

If i want that the sensor detect the line as white and the parts outside the line as black, what did i need to change, please help me, it´s important :/

[@nrares21]

How are you using the QTR-8RC board which has digital output and have the robot working when you wire the sensors to the analog inputs????????

[@abir95571]

could you give a link where i can understand , the reflectance sensor . Coz i am curios why do we need array of 5 sensors why not 1 or 2 sufficient ?

[@ujjwalsinha4172]

Sir, have you used separate code for the PID control during the coding of arduino UNO

[@vstop2176]

Serial.print(' ') ; not showing any serial monitor o/p Infrared Detection Tracking Sensor Module 8 Channel Infrared Detector Board For Arduino this is same as qtr 8rc

[@Dhilinraj]

I have qrt 8a (not 8rc) can i use this

[@fizzahikramulhaq4513]

Which one is the callineration button

[@kishanpatel5332]

Superb , unique method But ,Is it edited video❓ or it's original speed of line follower

[@jeffinjosephidicula3573]

How we can add intermediate stations or intermediate stops in between track

[@harditsingh8881]

If we attach 4 motors there will be different codes or not?

[@sumitsatyam9056]

We have a 12v Dc motor ,5v motor shield and 9v battery supply,How can we configure our robot from that ? or we have to use dc step up module and change the motor shield to 12v?? Coz we have to move robot to a inclined surface!

[@diptangshudutta3637]

can ya help me with the wiring using a normal infrared line following sensor with the same board

[@nalossu8564]

Can i use L298?

[@yuvpreetsingh9106]

sir i want to use gyroscope instead of castor wheel please tell me the changes i have to make

[@shubhrachatterjee]

Can you please suggest me the changes in the code if I use an IR sensor array similar to that of QTR 8RC sensor but not the exact one shown in the video.

[@ikramkakar7049]

please if anyone can tell, i have uploaded the code but only one motor starts while the other is not starting.

[@vstop2176]

Ikram Kakar ther voltage drop or less voltage to ur motor increase voltage 9 to 12

[@siddhikadichwalkar751]

what changes are required in code n circuit... if i m using array of sensors instead of QTR reflectance sensor...??

[@ThePhildozer89]

Pretty cool! I have a question though, do you know of a way that you can use this code and then have the robot stop when it reaches a solid black line?? I am working on a project now that this would be helpful for and I'm not so good at coding and figuring this stuff out.

[@nauraizsubhan01]

how to connect separate battery for the motors...

[@shivambudhia2110]

I have a sensor which is marked with pins D1 D2 D3 D4 D5 D6 5V GND A1 A2 A3 A4 A5 A6 5V GND . Can u help me with the connections

[@harshkathiriya439]

How the direction of the robot is changed.....how it is done....I mean direction is changed??? How???is bovine the reason ??? Pls explain me in detail.

[@netkingmahin]

Thanks

[@monmoypaul9304]

What about calliberation?

[@keshavgoel9020]

is there any other sensor I can use for the robot I can't find the given sensor

[@neilmitra4627]

here is the sensor: www.pololu.com/product/961

[@aymenberkaoui8871]

can someone explain me the role of the bovine wheel please

[@shubhrachatterjee]

What changes in the code should i make to make my bot follow white line over black background?

[@ayushmange]

can you make a project based on Mindwave controlling system

[@ukhtifathimahramadhani2090]

hey, I've download the library from your referred link but it can't be included on my sketch (it doesnt even shown up on my library list). I've tried to add it manually but it says I have invalid library. could anyone help me please? :)

[@Thinkdifferentsagnic]

Please answer this! Why is your error declared as position- 2000? Then for any position of the line the error would be same. It should be something like - goal- position isn't it?

[@stephmakeslyrics4982]

genuinely a great tutorial, but its not for the sensors im using.. :(

[@omarslimeni1374]

if i use 5 infra red sensor( IR Tcrt5000)not QTR-8RC it still work!!!

[@cerenkyak6961]

Merhaba beyaz zemin siyah çizgide olurken siyah zemin beyaz çizgide olmuyor nereyi değiştirmemiz gerekir acaba

[@somendutta182]

hi i just need a little help...can i use any other IR sensor array instead of the polulu sensor... because its very expensive here....thanks

[@hamzasaber880]

can i use IR sensors instead ? of course i'm not gonna use the Pololu QTR Sensor Library (unless it is compatible with IR sensors)

[@sumeshkumar9086]

pls sir explain me how to make a transforming robot and multiple sensor control robot using android phone pls sir and thank you so much sir and it is possible to make a sensor robot car using brushless motors with high rpm motors

[@tiffanye.nichole1995]

If I do not have a on off switch will it still work if i just plug it up to the battery after uploading the code successfully? or do i have to have a switch, i followed this tutorial and it is not working for me.

[@Alone-kd3bc]

On my sensor there is an IR pin? Whats the function and how to connect it?

[@mushfiqqayyumsaif7358]

can I use QTR-8A instead of QTR-8RC???

[@nilutpolkashyap]

Can the robot follow a line of 1/2 inch width black line?

[@GThinks]

what's making the car turn?

[@anaisdb]

Hello, I have all the pieces to start this project, but how to assemble the QTR-8RC Reflectance Sensor ? thank you very much

[@anaisdb]

On yours, I do not see the resistance on? where does it have to be put? I see that you have welded from 8 to gnd, nothing for the others? thanks again :)

[@GurpreetSingh-zh5je]

can it enable to find the gap and crosses...? please reply fast

[@kavipatel298]

I need help, I cant find the code. Could you please post a link!

[@cesaralejandro1463]

Hi, I'm from Peru, a question, do you have the code for this video? please thank you very much