Armor Case Raspberry Pi Mount for Prusa Bear
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Raspberry Pi mount for the Prusa Bear frame that works with heat sink type cases, such as the Sertronics Armor case.
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- Prusa Parts & Upgrades
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- Creative Commons — Attribution — Share Alike
This is a Raspberry Pi mount for the Prusa Bear frame that works with heatsink type a.k.a. Armor cases, such as the Sertronics Armor case or the Joi-It Armor Case or any case of this type. It works with Raspberry Pi 3B, 4, and 5. You just have to have the right case for the Raspberry Pi you're using.
If you use the original MK3S+ frame check out the version for the original Prusa frame.
Features
Works with Raspberry Pi 3B, 4, and 5
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.
Prusa Bear-style aesthetics
Short path between Raspberry Pi and the electronics case allows very short USB cables
STEP file available for easy remixing
UpdatesV1.1 - 2024-03-26
|
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 |
1 | M3x10mm Button Head Cap Screws | |
1 | M5 T-Nut for 2020 Extrusions (drop-in T-nuts or slide-in) |
|
Assembly
Assemble the top part of the Armor case and the mount using the M2.5 screws so that the Raspberry Pi is sandwiched between them as shown in the picture below. You don't need the bottom of the Armor case.
Install the mount on the back side of the left vertical aluminum 40x20 extrusion (just above the electronics case) using the M5 bolt and T-nut. If you use a slide-in T-nut you will have to temporarily remove the top cap of the extrusion.
Print Settings
Print the part in the original orientation. The STL is pre-rotated for printing.
Use PETG or another material with a higher temperature resistance in case the Pi gets a little warm.
You can use the Bear print settings
Material: PETG (or any solid material with decent heat resistance)
Extrusion width: 0.45mm
Layer height: 0.2mm
Perimeters: 3 or 4
Infill: 20%
Solid layers: 4 or 5 top and bottom
Supports: no
Post-Printing
The four M2.5 holes are floating counterbore holes. They're closed so that they can be printed without support. You need to poke them through using an M2.5 crew or a 2.5mm drill bit or anything pointy. It's just a single layer.
Additional Credits
The Armor Case used for the illustrations and as a reference is by Ruslan Magomedov on GrabCAD.