The Rotary Encoder Module is a versatile sensor that converts rotational motion into electrical signals, allowing accurate detection of position, direction, and rotation speed. Commonly used with Arduino, Raspberry Pi, and microcontroller-based projects, it is ideal for robotics, motor control, CNC machines, and DIY automation systems. Unlike traditional potentiometers, rotary encoders provide infinite rotation with precise digital output, making them highly reliable for advanced control applications. Easy to integrate with Arduino libraries and tutorials, this module is a must-have for students, makers, and engineers in Bangladesh who want to add precision control to their projects.