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line-follower-using-arduino-easy-diy-project-25ee31-en.md

Connect the wires to the motors. Then attach the motors to the chassis using Zip ties. Attach the wheels to it.

Now the body is complete.

Here we are using an L298N motor driver module which is a dual H-Bridge driver. It can drive 2 motors bi-directionally or 4 motors uni-directionally.

Connect the motors to the driver.

Connect the power source to the power pins of the driver.

The IR sensor module has an emitter and a receiver. The IR light is absorbed by black surfaces and reflected by white surfaces. This helps us to follow the black line.

Connect 3 jumpers to the IR sensors.

One for data and the rest two for power.

Connect the input pis of the motor driver to the digital pins of the Arduino. Assign them using the code. Do the same for the IR sensors.

Link to the code: https://github.com/sairushan/Line-follower

Upload the code and enjoy!

EXPANDED TECHNICAL DETAILS

Precision Optical Guidance

This project builds a responsive autonomous vehicle that follows a black line on a white surface using differential light reflection.

  • IR Reflectance Matrix: Uses a pair of TCRT5000 IR sensors. The Arduino monitors the digital state of each sensor; a HIGH signal indicates reflection (white surface), while LOW indicates absorption (the black line).
  • Proportional Correction Logic: Instead of simple on/off switching, the Arduino uses a basic P-Controller to adjust the PWM speed of each motor. If the left sensor hits the line, the right motor slows down to pull the robot back on track.

Hardware Hub

  • L298N Power Drive: Manages two 6V geared motors using an H-bridge, allowing for high-current maneuvers while protecting the Arduino's digital pins.

ข้อมูล Frontmatter ดั้งเดิม 

title: "Line Follower Using Arduino | Easy DIY Project"
description: "In this tutorial, we will be making a line follower using Arduino and L298N motor driver."
author: "sairushan"
category: ""
tags:
  - "line follower"
  - "l298n"
  - "diy projects"
  - "college projects"
  - "school projects"
  - "robots"
views: 3175
likes: 0
price: 1120
difficulty: "Easy"
components:
  - "1x SparkFun RedBot Sensor - Line Follower"
  - "1x Jumper wires (generic)"
  - "1x Solderless Breadboard Half Size"
  - "1x Arduino UNO"
  - "1x Dual H-Bridge motor drivers L298"
  - "1x DC Motor, 12 V"
tools: []
apps:
  - "1x Arduino IDE"
downloadableFiles:
  - "https://github.com/sairushan/Line-follower"
documentationLinks: []
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seoDescription: "Build a Line Follower using Arduino and L298N motor driver. Easy DIY tutorial for beginners to learn robotics and programming."
videoLinks:
  - "https://www.youtube.com/embed/_yT3qUGiSOk"
heroImage: "https://cdn.jsdelivr.net/gh/bigboxthailand/arduino-assets@main/images/projects/line-follower-using-arduino-easy-diy-project-25ee31_cover.jpg"
lang: "en"