Snap-On CPX Mount

This 3D printed mount is designed specifically secure the Circuit Playground Express (and Classic) without any hardware screws. Tabs on the sides grasp the edges of the PCB and hold it in place. Built-in standoffs elevate the PCB allowing room for a 500mAh lipo battery. The symmetrical design allows any orientation and provides cut aways for JST and USB connectors. 

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3D Modeling CAD

The geometric tree was designed in Autodesk Fusion 360. The source file is available to download and features sketches and parametric timeline so it's free to tweak and modify.

3D Printed Parts

The tree is printed in a translucent filament to better diffuse the LEDs. A special dual color version was designed for dual extrusion setups. The starfruit tree topper requires support material, optionally split in half  print in two pieces and glue together. 

Dual Extrusion

Different colors can be used to create masking effects that reveal light using translucent colors. The black tree is a mix of Fillamentum's Verito Galaxy PLA and Translucent PLA for the rings – This creates a lighting effects that illuminates the rings around the tree. 

Delicious Filaments

For high quality prints we suggest good quality filaments from awesome manufacturers. Here's a list of the various filaments we used in this project.

Slice Settings

Use these settings as reference. Values listed were used in Ultimaker's CURA 3.X slicing software.

  • 0.2mm Layer Height / 0.4mm nozzle
  • 0.38mm Line Width (inner & outer widths)
  • 60mm/s printing speed
  • 20% infill

Multi-Purpose CPX Mount

This mount makes for a quick 3D print and provide decent support for making a simple and portable project. To remove the Circuit Playground from the mount, use fingers to pull apart tabs and push PCB outwards from underneath.

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Design Source Files

The tree and CPX mount was designed in Fusion 360. This can be downloaded in different formats like STEP, SAT and more. Electronic components like the board, displays, connectors and more can be downloaded from our Fusion 360 CAD parts github repo.

This guide was first published on Dec 19, 2018. It was last updated on Dec 19, 2018.
This page (3D Printing) was last updated on Oct 24, 2020.