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How to Make Line Following Robotic Car Without Arduino | Plug & Play IR Sensor + Relay Module | MR Tech Box 🚗 Learn How to Make a Line Following Robotic Car Without Arduino or Coding! In this video, I’ll show you step-by-step how to build a plug & play Line Follower Robot using just IR sensors and relay modules — no microcontroller required! This is one of the simplest and smartest science/engineering projects you can make at home or for your school/college exhibition. 🧩 Working Principle: Each IR sensor detects the black/white line and sends a signal to the relay module, which controls the direction of the motors automatically — allowing the robot car to follow the path smoothly. 💡 Why You’ll Love This Project: ✅ No Arduino or coding required ✅ Fully automatic line detection ✅ Simple Plug & Play concept ✅ Best for school & college science exhibitions 🛒 Want to Buy Ready-Made Line Following Robot Kit? 👉 Visit: https://www.mrtechbox.com (Complete DIY Kit with Training Support Available) 📦 This project is ideal for: School Science Project Inspire Award Project Engineering Mini Project Robotics Workshop Learning 📺 Subscribe Now for more Science, Robotics & Arduino Project Tutorials! 🔔 Don’t forget to LIKE, SHARE & COMMENT your questions below! #LineFollowingRobot #diyrobot #scienceproject #NoArduino #roboticsforbeginners #relaymodule #irsensor #schoolproject #engineeringprojects #PlugAndPlayRobot #MRTechBox #roboticsproject #LineFollowerCar #stemprojects #roboticstutorial #howtomakerobot #DIYLineFollower #SimpleRobotics #RobotWithoutCoding #sciencefairproject