Snap Fit

Need a quick mount for your Adafruit Circuit Playground Express board? 3D Print this snap fit mount and secure the PCB without any hardware screws. No support material necessary!

Simple Design

The low-profile design allow this to be embedded in other props. Add a diffuser on top and stuff it into a pumpkin or cauldron to make a simple Halloween project!


A Black woman's manicured hand holds a round microcontroller with lit up LEDs.
Circuit Playground Express is the next step towards a perfect introduction to electronics and programming. We've taken the original Circuit Playground Classic and...
In Stock
Fully Reversible Pink/Purple USB A to micro B Cable
This cable is not only super-fashionable, with a woven pink and purple Blinka-like pattern, it's also fully reversible! That's right, you will save seconds a day by...
In Stock
Angled shot of a Lithium Ion Polymer Battery 3.7V 500mAh with JST-PH connector.
Lithium-ion polymer (also known as 'lipo' or 'lipoly') batteries are thin, light, and powerful. The output ranges from 4.2V when completely charged to 3.7V. This...
In Stock

Slicing Parts

Tested with PLA filament. The model is oriented to be 3D printed "as-is" and does not require any support material.

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


Portable CPX

Add a 500mAh battery on the bottom to make your project portable. Fits in between the built-in standoffs with enough space for the length of the cable.

USB Cables

Cutouts on the sides allow you to connect a micro USB cable and battery. 

Mounting Tabs

M3 size mounting tabs can be used to attach the Circuit Playground Express with hardware screws to other surfaces such as walls, cardboard, and other materials.

Snap Fit

Orient the Circuit Playground Express micro USB port with one of the cutouts. Insert the PCB at an angle to get it underneath one of the tabs. Press down to snap fit PCB.

3D CAD Models

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

Layer by Layer

Interested in CAD tutorials? Check out my playlist on YouTube – There's over 100 of them! My personal favorite is the snap fit tutorial for cases and enclosures. 

This guide was first published on Sep 24, 2019. It was last updated on May 10, 2024.

This page (3D Printing) was last updated on May 10, 2024.

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