Coralboard SL "DevDock" Case | Snap-Fit Lid, Flex Buttons, Wall & Desk Mount

Slim, fully printable case for the Synaptics Coralboard SL.
Protects the board and keeps everything a developer might use within reach. Ports, side buttons, the microSD card, and the other connectors are accessible with the lid on.

HIGHLIGHTS

• Every port stays accessible: USB-A, USB-C (opening sized for the plug's housing, not just the socket), Qwiic/STEMMA QT, the 7-pin JST-SH on the right and the microSD slot on the left.

• Print-in-place flex buttons: both edge buttons are pressed through flexible tabs in the front wall. A small nub inside presses the switch.

• Open header windows: the 2×10, both 1×8, the 2×2 and the 2-pin power header are open through the lid, so jumper wires plug in with the case closed.

• Airflow: vent slots in the floor under the main chip module and in the lid above it and the M.2 card.

• Status LEDs visible: three small light holes right above the on-board LEDs.

• Snap-fit lid: two long snap ridges and alignment lips hold it in place. It comes off with a fingernail at the side.

• Built-in wall mount: two keyhole slots, 45 mm apart. Hang it on two screws with the ports facing down and the GPIO facing up.

• Optional desk stand: two pegs fit the same keyholes. It holds the case at 15° from vertical and high enough that USB cables can bend underneath. There is an opening for routing cables. Good for demos and smart-camera setups.

PARTS

• CoralBoard_Case_Tray.stl (1×). Print with the floor on the bed.

• CoralBoard_Case_Lid.stl (1×). Flip it so the top face is on the bed and the lips point up.

• CoralBoard_Desk_Stand.stl (optional, 1×). Lay it on its side, flat face on the bed, so the pegs print strong.

• CoralBoard_Case_All.step: editable CAD of all parts for remixing.

HARDWARE

4× M3 × 6 mm screws, self-tapping or machine screws (board to standoffs, 2.5 mm pilot holes)

Wall mounting only: 2× screws with a 3.5–4 mm shank and a head no larger than 7.5 mm

PRINT SETTINGS

• PLA or PETG, 0.2 mm layers, 3 walls, 9-15% infill

• No supports needed. Port openings bridge 6–16 mm.

• The flex buttons work best in PETG. In PLA, don't press them all the way flat.

ASSEMBLY

1. Remove the rubber feet from the bottom of the board.

2. Drop the board into the tray with the USB-A/USB-C/button edge facing the front wall. The button nubs should line up with the switches.

3. Screw it down with 4× M3 × 6 mm screws.

4. Press the lid on until both sides click.

DIMENSIONS

• Outer size: 78.6 × 64.6 × 19 mm (tray 17 mm + lid 2 mm)

• 2.2 mm walls and floor, 0.6 mm clearance around the board (1.5 mm on the port side)

• The board sits on 4 mm standoffs, leaving room for the ribbon-cable connector and header pins on its underside.

thanks for printing <3