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Raj Malhotra
Raj Malhotra

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How to Build a Line Follower Robot Using Arduino: A Quick Guide

Building a line follower robot using Arduino is a great way to get started with robotics. This robot follows a black or white line on the floor by using sensors and motor controls. Here’s a simple step-by-step process with all the essential line follower robot components.

What You Need

line follower robot components

Step 1: Set Up Arduino Uno R3

Mount your Arduino on the chassis and connect it to your PC for programming.

Step 2: Connect the L293D Motor Driver

Wire the L293D motor driver to Arduino pins and DC motors to control speed and direction.

Step 3: Install IR Line Sensors

Attach IR sensors to detect the line. Connect their outputs to Arduino digital pins.

Step 4: Program the Arduino

Write or use a basic line following robot Arduino code to read sensors and control motors. Example logic:

  1. Both sensors on line → Move forward
  2. Left sensor off line → Turn left
  3. Right sensor off line → Turn right
  4. No sensors on line → Stop

Step 5: Upload and Test

Upload the code to Arduino using the IDE. Test the robot on a track and adjust sensor placement or code if needed.

Step 6: Enhance Your Robot

Add features like Bluetooth, LCDs, or obstacle sensors to make your robot smarter.

Building a line follower robot using Arduino and L293D motor driver is fun and educational. Whether you're using an Arduino line following robot kit or building from scratch, this project teaches key robotics concepts.

Try this hands-on project and explore more with your line follower robot Arduino code!

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