LED Diffuser Test Kit

This LED Diffuser Test Kit is a modular system designed for experimenting with WS2812 (NeoPixel) LED strips and different diffuser types.

The base is a modular box that holds a LED strip, and the top is interchangeable with multiple diffuser designs. Each diffuser comes in several thicknesses and variations, allowing you to test:

• Light transmittance – how much brightness is lost
• Light uniformity – how evenly the light spreads
• LED hotspot visibility – whether individual LEDs are still visible
• Material and color influence – experiment with different filaments and finishes

Features:

• 🧩 Modular box design – swap diffusers in seconds
• 🎛    Multiple diffuser styles – flat, curved, patterned…
• 📏 Different thickness options for light diffusion comparison
• 💡 Designed for WS2812 / NeoPixel strips, but fits similar LED strips
• 🧪 Ideal for experimenting with PLA, PETG, transparent, translucent, or matte filaments
• 🛠 Fusion 360 project file included – customize the design to fit your own LEDs, shapes, or mounting systems
• 💻 Arduino test program included – with sample lighting effects for evaluating brightness, uniformity, and color blending

Global parameters - my option

• Infill - 100%
• Perimeters - 1 layer
• Color - Natural color, Prusament PLA Vanilla White

💬Post your own prints, slicer settings, and material choices in the comments!

Your results and ideas can help others achieve better light diffusion and inspire new experiments.

The meaning of height on the box

Height between floor and top surface

Custom box and diffuser from change parameters (Fusion360 project file)

Parameters change the size of the diffuser and adapt the box to it

Thickness of diffusers

Thickness of Arc diffusers

Cell wall thickness

Updates

• 15.08.2025 - added to fusion360 project change of parameters for editing custom boxes and diffusers