ws2811 pixel matrix
thingiverse
This pixel matrix net will allow you to create any size matrix. You'll need to use glue to attach the pieces together. Fits 12mm ws2811 pixels. They are spaced 2" apart.
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With this file you will be able to print ws2811 pixel matrix with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on ws2811 pixel matrix.