OpenBay Case - CoralBoard SL
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OpenBay is an enclosure for the CoralBoard SL that offers a wide range of accessibility options and features.
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CoralBoard SL · OpenBay Case
A two-part case built around the things you actually do with a dev board: re-plug the USB-C cable, press the buttons, swap the microSD card, wire the GPIO, attach a camera, probe the underside.
Modelled directly on Coral's official reference STL: real hole positions, real connector positions and heights. No glue, no supports, 4 screws.
All images are renders of the STL files, not photos of a printed part.
Why it's different :
Points | Problem | What the case does |
|---|---|---|
1 | No power button. The only way to power-cycle is to pull the USB-C cable, over and over. | Zip-tie strain relief shelf: two slot rows per cable, one to strap the plug overmold, one to strap the cable. |
2 | The two push-buttons (reset / user) are 90° angled and buried in most cases. | A Ø3.2 access hole on each button. A bent paper clip is enough. |
3 | microSD socket is side-entry (card slides in from the left edge). | A gate in the left wall at the socket mouth, so you can swap cards without opening the case. |
4 | The Google I/O kit ships with a camera on a 22-pin ribbon. | A ribbon window in the lid above the connector. |
5 | All test points are on the underside, plus JTAG THT holes for pogo clips. | Open-frame base. Nothing covers the underside; screws go in from the top. Flip the case to probe. |
6 | The board runs warm. | Vents over the SoM/SoC area + open underside for airflow. |
7 | Mounting holes are not centred on this board. | Standoffs and lid pillars follow the real, asymmetric hole pattern (65 × 48 mm). |
Also: GPIO window (2×10 header), window over the right-edge connector cluster, 2 keyhole wall ears.
Hardware (not 3D printed) :
4 × M3 × 20 mm countersunk (flat-head) screws: self-tapping into the Ø2.6 pilot holes, or drill Ø4.0 and use M3 heat-set inserts
Optional: zip ties ≤ 3 mm wide
Optional: 2 wall screws, head ≤ 8 mm
Recommended print settings :
Material | PETG (PLA only for fit tests: the board warms up) |
Layers | 0.2 mm, 0.4 mm nozzle |
Walls / infill | 3 perimeters, 20–25 % |
Supports | None. Base prints as exported; lid is already flipped (plate on the bed) |
Note | The front slots bridge up to ~25 mm: use your usual bridging settings |
Dimensions :
Case 80.6 × 65.6 × 20.8 mm · with ears and shelf 106.6 × 95.6 mm Board 73 × 58 × 1.62 mm · tallest part 8.59 mm · deepest underside part 2.16 mm (from the reference STL)
🙏 Credits : Board geometry: Synaptics Coralboard SL reference model by Google Coral (Printables).