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Line Follower Robot
Project idea
Build a compact, low‑cost 2‑wheel differential drive robot that follows a dark line using IR reflective sensing and a microcontroller decision loop. Sensor states are decoded to steer left/right/forward/stop by toggling L293D H‑bridge inputs, enabling robust tracking on contrasting surfaces.
 
Project description
Two IR sensor modules detect line reflectivity and feed digital signals to the controller, which computes motion decisions and drives two DC motors through the L293D to keep the robot centered on the path. The build uses a 2WD chassis with BO motors, modular IR sensor modules, and basic passives on breadboard/PCB, and can be upgraded with ultrasonic sensing for obstacle avoidance without altering the core control loop.
 
Components list
  • Microcontroller
  • DC Motor (x2)
  • Robotic Chassis
  • Motor Driver IC/Module (L293D)
  • IR Transmitter Receiver (IR sensor modules, x2)
  • Power Supply
  • Cables and Connectors (jumper wires)
  • PCB/Breadboards
 
 
Features
  • 2‑sensor line detection and closed‑loop control with Arduino for reliable tracking on contrasting lines.
  • Dual H‑bridge motor drive using L293D for bi‑directional DC motor control and simple PWM‑based speed handling.
 
Applications
  • Factory and warehouse line‑guided material movement and education demos for autonomous navigation principles.
  • Robotics workshops, competitions, and academic labs teaching sensors, control logic, and motor driving with MicroController.
 
Project Includes:
  • Fully assembled and tested circuit
  • Circuit diagram
  • Source code 
(For DIY KITs - only the components will be provided)
 
Project Types:
  • DIY KIT(Do IT YourSelf KIT) - We are providing only components in this kit for this project
  • DIY KIT with Code & Circuit Connections - Along with the components, you will get the Code and the Circuit Connections file to help you build the project easily.
  • Readymade Breadboard - We are providing fully assembled, tested and ready-made project using plug-n-play jumper wires and breadboard with all the other components, code & circuit diagram.
  • Readymade Soldered - We are providing fully assembled, tested and ready-made project soldered on a PCB with all the other components, code & circuit diagram.
 
Dimensions (cm)
Approx. 25 × 13 × 6 cm based on common 2WD chassis formats used for small line followers.
 
Notes: All the products are made by LearnElectronics India and not for re-sale.

Line Follower Robot

From ₹2,950.00Sale Price
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