The 64×64 RGB LED matrix enclosure developed by [Davisan1001] creates an even surface and square pixels with a 3D-printed grid, parchment paper, and transparent plastic, while also providing a Raspberry Pi mount. The grid prevents LED light from bleeding into neighboring pixels. Instead of drawing it from scratch in CAD, the designer prepared it by slicing a flat part with a square-pattern infill and no solid top or bottom layers, adjusting the spacing through experimentation. White paper blocked too much light for the diffuser, while greaseproof paper proved impractical. Thin and uniform parchment paper became a suitable solution with sufficient light transmission.
Why it matters
This work shows that in LED matrix projects, not only the electronic components but also how the light is directed determines image quality. The grid and diffuser work together to limit light bleeding into neighboring pixels, aiming to turn the matrix into a more uniform surface; this is particularly important for applications where square pixels need to be clearly defined. The material comparison shows that the choice for diffusion involves a trade-off between light transmission and usability. Preparing the design through slicing settings rather than a complex modeling process offers a practical method for Raspberry Pi and 3D printing users who want to develop similar enclosures. However, the results produced by different spacings and materials are not compared in detail in the text.