OpenPuck Tiny Cover
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Hyper-minimal 'case' for the NRF52840 Pro Micro. This one's designed around a 'low profile' version of the board.
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Model information
- Source
- Printables
- Category
- Portable Devices
- License
- Creative Commons — Attribution — Share Alike
I wanted a hyper-minimal case for my openpuck build, so I made this. The covers fit the 18x33mm profile of the dev board, so it's not taking up any more space than it needs to. There are designs for both the 'low-profile' NRF52840 boards, with the USB C port recessed into the PCB and the 'high profile' variants where the port sticks above the board a little more. Each piece snaps on to the board using the open pin through-holes, so it's not going to be compatible if you're using any of the pins for...well anything. Perfect for an openpuck build though! The fit is a pure friction fit and can be a little finicky to get on, I find the best luck with laying the cover on a flat surface then slowly maneuvering the board to line up all the pins. The 3D-printed pins are pretty fragile so go slow. I snap one or two off every time I make one and fit it on to a board, but they hold just fine even missing a pin or... six. If you're nervous about the covers coming off I suppose you could hot glue them or something, but mine are very secure once they're in place.
There's a few models here:
OpenPuck_tinycover-Bottom.3mf: fits on to the bottom 'flat' side of the board, has every other pin hole filled to make room for the top side.
OpenPuck_tinycover-Top.3mf: fits on the top side with all the greebles on it. Has every other pin hole filled to make room for the bottom side.
OpenPuck_tinycover-Top_ONLY: if you want to be even MORE minimal, use this one. It fits on the top 'greeble' side of the board but has every single pin hole filled for a more secure fit, not compatible with the bottom piece.
There's also two more version of the top in a 'High Profile' folder, this is for version of the board that have the USB C port sticking significantly above the board. If the 'bottom' of your USB port isn't flush with the bottom of the board, USE THESE!
Printing:
PLA (though I suspect most materials would work just fine), print with the flat sides down. No supports needed. I used a .4mm nozzle at .2mm layer height, came out perfectly.