32x32 LED Matrix Frame with Diffuser Grid

32x32 LED Matrix Frame

• No glue*, tape or screws needed
• Accessible USB port
• Wall- or desk-mounted
• Snap-fit sockets for ESP-WROOM-32, MAX4466 or MAX9814 microphone and DC Power Connector for easy installation
• Optional socket-less version

* I suggest gluing the two front frame pieces together, and also maybe the 4 diffuser pieces… it's getting big :)

Instructions

Print:

• 4xFront SPLIT
• 4xDiffuser SPLIT
• 1xBackTL
• 1xBackTR
• 1xBackBL
• 1xBackBR

Print the Diffuser Screens with these settings to give the screen a horizontal “scanline” texture:

• Top/Bottom surface pattern: ALIGNED RECTILINEAR
• Internal solid infill pattern: ALIGNED RECTILINEAR
• Sparse infill pattern: ALIGNED RECTILINEAR
• Infill direction: 0
• Rotate either the model or the infill direction 90° for two of the screens.

If using white filament for the Diffuser Screen, printing it on a textured plate will make it scatter more light and be dimmer. Use a smooth plate for best results. A textured plate will work great for clear filament though :)

For the LED matrix, you'll need:

• Four 8x32 or four 16x16 LED Matrices - e.g. https://aliexpress.com/item/4000544411175.html
• ESP-Wroom-32 - e.g. https://aliexpress.com/item/1005005972312714.html
• MAX4466 microphone - e.g. https://aliexpress.com/item/3256803608057399.html
  or
  MAX9814 microphone - e.g. https://aliexpress.com/item/3256805923391884.html
• Power Supply 5V 15~60A (~15-20A will do for most uses) - e.g. https://aliexpress.com/item/1005006126703620.html

Matrix/ESP32/WLED Assembly Guide:

I connected the matrices starting with the first one (#0, the one attached to the esp32 and power supply) in the bottom right corner (when seen from the back), like this:

and then used these settings in WLED/Config/2D Configuration:

If you're using 8x32 matrices or want a different setup you'll have to experiment a little with the settings.

Some useful resources:

• WLED Project: https://kno.wled.ge/
• Chris Maher WLED tutorials playlist: https://www.youtube.com/playlist?list=PLur8dX5PE-4pk838s_gZAdm-98-sf0f0Z
• Make It Work WLED tutorials playlist: https://www.youtube.com/playlist?list=PLUTKOGJvdIQ8WYfG6TDJ_c8_WlPovWbL9

My other LED projects:

https://www.printables.com/@fractalnoise/collections/1236469