Coralboard case, no supports, hardware, or tools
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Toolless, supportless, ventilated and LEDs remain visible
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- Printables
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When I get a development board I always want a case for it, these things need to be protected from all the other stuff on the desk.
Every connector is accessible.
The cut for the mikroBUS connector follows the dimensions given by mikroBUS, including the keying bevel.
This case requires no hardware. The case halves snap together with the PCB held between them. If you print so that the case halves have their top and bottom on the printing plate, no supports are needed. Same with the buttons, put the square on the printing plate. The light pipes will require good adhesion to the plate during the print but will print as vertical cylinders standing upright.
There is plenty of ventilation. While the GRINN module is power-efficient some ventilation is always required and the device filling the m.2 slot could also contribute plenty of heat.
The two buttons are different, because the User button should be easy to press; it's going to do nothing unless configured. The Reset button is always going to reset so it is smaller and does not protrude at all from the front of the case. Pressing it needs to be a deliberate action.
To avoid hiding the LEDs (you want to see them, right?) this case uses light pipes printed in clear filament. I have used these often in keyboards, where a LED on the circuit board needs to be visible on the outside of the case. These light pipes fit into carriers in the top of the case and sit on top of the LEDs - they are the simple cylinders seen in the cutaway picture of the top of the case. I used Prusament Transparent PETG.
(I don't have a Coralboard SL to test fit; but if the official STEP file is accurate everything should fit perfectly. If not it won't be much work to adjust a clearance here or there.)