BO (Battery Operated) motors are small, lightweight DC motors commonly used in beginner-level robotic projects. They operate on low voltages (3–12V) and provide sufficient torque to move a robot chassis at moderate speeds. In a Line Following Robot, two BO motors are connected to the wheels, enabling the robot to move forward, turn left, or right based on instructions from the Arduino. These motors are easy to mount, energy-efficient, and ideal for simple robotic applications. Their low RPM ensures better control while following the line, preventing overshooting or instability during quick turns on the track.