Raspberry PI 3B/4 Enclosure

I use Octoprint to control my pair of Ender 3s, but having a Raspberry PI floating around at the mercy of its cables is annoying, so I created this enclosure with options for attaching it to the printer.

If you need a case for a PI Zero, I have a similar enclosure for that here:
https://www.printables.com/model/703964-raspberry-pi-zero-2w-enclosure

Printing

Print on of each models

• 3b-bottom.stl - The bottom of the enclosure. Print flat, no supports needed
• 3b-top.stl - The top of the enclosure. Print flat without supports
• 3b-bracket.stl - Optional bracket that fits a 20m V-slot extrusion and clips around the enclosure
• 3b-bottom-2.stl - Optional. Alternate bottom. Print this instead of 3b-bottom.stl along with foot.stl to attach directly to the V-Slot extrusion
• foot.stl - Optional. Foot for attaching 3b-bottom-2.stl directly to the V-Slot extrusion

I printed these parts in Inland Tough PLA, but you can use whatever material you have and/or like.

Additional Parts

Besides the prints above you'll need the following additional parts

• 4x 20mm M3 screws (and appropriate driver)
• 4x 5-6mm M3 brass inserts
• A soldering iron for getting the brass inserts set

Optional: For attaching Foot.stl to 3b-bottom-2.stl

• 2x 6mm M3 screws (make sure the screws don't touch the bottom of the PI board)
• 2x M3 nuts

Assembly

1. Ensure all prints are clean and have had any printing artefacts removed.
2. When using 3b-bracket-2.stl, first attach the foot in the desired position (For attaching to any of the bottom extrusions of the Ender 3, use the foot in one of the side positions)
3. Place the Raspberry PI inside the top (3b-top.stl) and screw the screws through the hole so that they just come through the screw holes in the PI board.
4. Put the bottom (3b-bottom.stl or 3b-bottom-2.stl) in place and carefully advance the screws making sure you don't get them cross-threaded.
5. Tighten the screws

Optional - Mounting The Bracket

To mount the bracket (3b-bracket.stl). Find an appropriate place on your printer that won't interfere with its operation and slide the bracket in place. Now slide the completed enclosure into place.

Optional - Mounting with 3b-bracket-2.stl

Slide the foot into the V-Slot and position the PI where you want it.

Enjoy.