Raspberry Pi 4 - Geekworm Armor Case Voron mount

It is not necessarily only for Voron, you can just use it to mount the Raspberry Pi 4 to any DIN rail.

Geekworm armor case

Purpose: 

The armor case and other cooling solutions for the Raspberry Pi have their screws mounted from the bottom. This makes it hard to mount it in a good way with the original Voron parts. This is why I designed this.

BOM:

• 4 pieces of M2.5x16  SHCS
• 4 pieces of M3x8 SHCS
• 4 pieces of M2x10 self-tapping screws
• 4 pieces of M3 heat set inserts (I used M3x5.7 but the Voron spec M3x5x4 might work too, I haven’t tested this)
• 2x pcb_din_clip_x3.stl from the Voron Github repo

Assembly instructions:

Please use the attached pictures as a guide.

1. You need to install the 4 heat set inserts into the bottom part.
2. Mount the 2 DIN PCB clips as you can see them in the pictures.
3. Mount the Raspberry Pi 4 together with the Armor Case using the 4 M2.5 machine screws. You need slightly longer ones than the ones that come with the case. I used 16mm long ones.
4. Attach the top part to the bottom one with the M3 machine screws. Here you might be able to use longer ones than 8mm.

Notes:

• It is easily serviceable, if you need to remove the Raspberry Pi, just unscrew the 4 M3 screws, or remove the whole assembly from the DIN rail.
• I have tested it with the input shaper kit installed (this came with my LDO Voron kit) and I don't have any clearance issues, the assembly is not too tall this way.
• It is possible that it might work with other cooling solutions, like tower fans etc., but then you are likely to run into clearance issues.

Printing:

I used the Voron standard settings to 3d print them and they turned out fine.

It was tested with:

• 0.2mm layer height
• 0.4mm extrusion width
• ABS+ filament from SUNLU