Uploaded December 2016 | Updated September 2026, 2 weeks ago

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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:
pololu.com/product/961
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

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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.com/adafruit-motor-shield/library-install
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/pololu/qtr-sensors-arduino/releases
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/MertArduino/Arduino-Line-Following-Robot

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 (+)