Coralboard Slim Case — protect it, use it, hang it
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A slim two-part case for the Synaptics Coralboard (Coral NPU dev board).
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Updated at source:
Model information
- Source
- Printables
- Category
- Electronics
- License
- Creative Commons — Attribution — Noncommercial
I don't have a board to showcase it, but orientated by the official step files. A simple case, which does the job.
Features
All front ports reachable: USB-A, USB-C (room for overmolded plugs), JST-SH 4-pin (Qwiic/STEMMA QT).
Both side buttons usable through the case: print-in-place flexure buttons in the front wall (a U-slot cut around a tab with a small nub that presses the switch stem). Press the round dot.
microSD slot in the left wall, JST-SH 7-pin opening in the right wall.
Open where you plug things in: the lid leaves the 2×10 GPIO, both 1×8 headers, the 2×2 header, the 2-pin header and the 22-pin display FPC exposed, so jumper wires and the display ribbon still connect.
Camera ribbon slot in the floor for the 22-pin FPC on the underside.
Cooling: vent slots above and below the 28 × 28 mm SoC module; two status-LED windows.
Wall mount: two keyholes, 44 mm apart. Hang the case with its back edge up; all cables then leave downward.
The board's own rubber feet can stay on: the board sits 4 mm above the floor.
Size
Outside: 78.0 × 64.2 × 18.8 mm (board: 73.0 × 58.0 mm).
Parts to print
File | Orientation | Notes |
|---|---|---|
| as exported (floor on the bed) | no supports; port tops are short bridges |
| as exported (top face on the bed) | no supports |
Suggested: PLA or PETG, 0.2 mm layers, 3 walls, 15–20 % infill. PETG is the better choice if the board runs warm in a closed corner.
Hardware
Qty | Part | Use |
|---|---|---|
4 | M3 × 16 mm screw, cylinder or pan head (head ≤ 6 mm) | lid → board → base (longer screws come out of the floor) |
2 | wood/wall screw, head 4–7.5 mm across and ≤ 2 mm tall, shank ≤ 3.5 mm | optional wall mount |
The screws cut their own thread into the 2.7 mm holes of the base standoffs. Don't overtighten.
Assembly
Drop the board into the base, USB ports facing the front openings. It rests on the four standoffs.
Put the lid on. Its four posts rest on the board's mounting pads.
Screw the four M3 × 16 screws through the lid and the board into the base.
Wall mount (optional): set two screws 44 mm apart horizontally, with 1.5 mm between the wall and the underside of each head. Put the keyholes over the heads and slide the case down.
Notes
If you use the M.2 Wi-Fi card with external antennas, route the pigtails through the GPIO opening or drill a hole in the left wall.