Armor Case Raspberry Pi Mount for Original Prusa MK3S+ Frame
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Raspberry Pi mount for the Prusa MK3S+ frame that works with heat sink type cases, such as the Sertronics Armor case.
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Updated at source:
Model information
- Source
- Printables
- Category
- Prusa Parts & Upgrades
- License
- Creative Commons — Attribution — Share Alike
This is a Raspberry Pi mount for the original Prusa MK3S+ that works with heat sink type cases, such as the Sertronics Armor case or the Joi-It Armor Case or any other case of this type. It works with Raspberry Pi 3 and 4. You just have to have the right case respectively.
If you use a Bear frame check out the Bear version of this mount.
UpdatesV2 - 2024-03-25: New version with a hook at the top for more stability against material creep or pulling on the power cable. | ![]() |
Features
Works with Raspberry Pi 3 and 4
Works with any type of Armor-style case that uses M2.5 screws. Just google “raspberry pi armor case”. All of them are compatible, including the actively cooled ones.
Short path between Raspberry Pi and the electronics case allows very short USB cables
STEP file available for easy remixing
BOM
Qty | Description | Sourcing |
|---|---|---|
1 | Armor case for the Raspberry Pi (only top part needed) | |
4 | M2.5x8mm Socket Head Cap Screws | Take from Armor case |
2 | M3x10mm Button Head Cap Screws or Socket Head |
Printing
Print with the hex pattern flat on the bed as shown in the screenshot below.
Material PETG (or any solid material with better temperature resistance)
Extrusion width: 0.45mm
Layer height: 0.2mm
Perimeters: 4
Infill: 20%
Solid layers: 5 top, 5 bottom

Assembly
Secure the Raspberry Pi and heat sink to the printed part using the M2.5x8mm screws from the Armor Case as shown.
Secure the mount to the back of the frame using M3x10mm screws as shown.


Additional Credits
The Armor Case used for the illustrations and as a reference is by Ruslan Magomedov on GrabCAD.
