This work-in-progress describes a project to improve the use of the “Reflected Optical Diffraction from One-dimensional Structures” experimental kit when teaching “light diffraction” in lower secondary school courses. In this project, we propose modifying the manual rotary disk into a programable rotational base by applying the Arduino Mega 2560 CPU with an encoder motor. Using this novel approach, instantaneous and continuous diffraction patterns with any angular displacement are allowed. An example of the proposed modification yields eight different continuous patterns of diffraction observed that are not possible in traditional manual operation, demonstrating the improved usability of the kit.