3D Printed Frame for Adafruit IS31FL3741 LED Glasses

2022-04-07 | By Adafruit Industries

License: See Original Project 3D Printing Wearables Adafruit Feather

Guide by Ruiz Brothers

Overview

3d_printing_hero_1

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_printing_hero_2

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.

3d_printing_hero_3

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.

led_matrices_hero_4

Feather-Compatible

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.

3d_printing_hero_5

Parts from Adafruit

LED Glasses IS31FL3741
Adafruit Feather RP2040
STEMMA QT Cable - 50mm
M2.5 Hardware Kit
M3 Hardware Kit
USB-C Cable
Adafruit LED Glasses Driver - nRF52840 Sensor Board

led_matrices_hero_6

3d_printing_hero_7

3d_printing_hero_8

3D Printing

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

3d-parts_10

Download STLs.zip

Download CAD source

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

3d_printing_cura_11

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.

Cad_assembly_12

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.

Project_assembly_13