Raspberry Pi 3 A+ with Blower Fan

Raspberry Pi 3 A+ case supporting a Prusa 5V blower fan and a 14mm x 14mm heat sink.
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updated August 26, 2022

Description

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Overview:

I wanted to design a case for my Raspberry Pi 3 A+ supporting a fan with parts I had laying around. I only had a 40mm blower fan and as I couldn't see any models for this, I decided to make my own.

My make of this has both FDM (Case & Lid) and Resin printing (Ducting) - Although it is possible to print the ducting using an FDM printer, I choose to use a semi transparent resin so I could see the Pi's heatsink.

*Requires modifying the Pi by removing the USB port*

 

Hardware required: 

  • Will Update soon

 

Printing Instructions:

Case: 

  • Resolution: 0.2mm layer height
  • 20% infill
  • 4 perimeters
  • 4 top layers
  • 3 bottom layers
  • Support required - YES
  • Print orientation - Bottom down

Lid:

  • Resolution: 0.2mm layer height
  • 20% infill
  • 3 perimeters
  • 4 top layers
  • 4 bottoms layers
  • Support required - NO
  • Print orientation: Top down

Ducting:

  • Resolution: 0.08mm layer height
  • Print orientation: hole side towards build plate

 

Summary:

This is my first CAD Design and Mk2 of this model. 

I plan to rework this model in the future to improve the following:

  • Make it easier to print without supports
  • Reduce the amount of plastic used (I aim to also reduce the volume of this design)
  • Use less specific hardware (e.g. clips instead of screws)
  • Test that the Auto Fan control (https://thepihut.com/products/auto-fan-control-module-for-raspberry-pi) fits inside the case, if not - redesign so that it does.

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