Wearable Frame

3D print a pair of frames for your Adafruit LED Glasses. Designed to fit any Feather compatible board! Use a STEMMA QT cable to easily connect to an Adafruit Feather. 

3D Printed

The parts are secured using hardware screws and nuts. The frames feature built-in nose pads for comfort and a better fit. The arms are attached to the frames built-in hinges using hardware screws and nuts.

LED Glasses Driver nRF52840

This particular arm is designed for the LED Glasses driver board featuring the nRF52840. Use M2 x 8mm long screws and hex nuts to secure to the 3d printed arm.


The left-arm features mounting holes sized for any Feather-compatible board like the Feather RP2040. Use a USB-C cable and a 5V battery pack for portability.

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CAD Parts List

STL files for 3D printing are oriented to print "as-is" on FDM style machines. Parts are designed to 3D print without any support material. Original design source may be downloaded using the links below.

  • arm-right.stl
  • arm-feather.stl
  • arm-nRF52840.stl
  • LED glasses frame.stl

Slicing Parts

No supports are required. Slice with setting for PLA material. 

The parts were sliced using CURA using the slice settings below.

  • PLA filament 220c extruder
  • 0.2 layer height
  • 10% gyroid infill
  • 60mm/s print speed
  • 60c heated bed

CAD Assembly

The Feather is secured to the arm with M2.5 x 6mm screws and hex nuts. The two arms are secured to the frame with M2.5 x 14mm long machine screws and hex nuts. The frame is secured to the LED glasses PCB with M3 x 6mm long screws and hex nuts. The Feather connects to the LED glasses using a 50mm STEMMA QT cable.

Design Source Files

The project assembly was designed in Fusion 360. This can be downloaded in different formats like STEP, STL and more. Electronic components like Adafruit's board, displays, connectors and more can be downloaded from the Adafruit CAD parts GitHub Repo.

This guide was first published on Sep 21, 2021. It was last updated on 2021-09-21 14:03:05 -0400.