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XIAO nRF52840 with Battery Enclosure — image 1
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XIAO nRF52840 with Battery Enclosure

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An enclosure to house the XIAO nRF52840 chip, a 42x30x6mm battery, and slide switch

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Creative Commons — Public Domain

An enclosure to house the XIAO nRF52840 chip (initial version assumes header pins are soldered to the chip), a 42x30x6mm lipo battery (I used MakerHawk 3.7v 700mAh). The OpenSCAD file allows you to print the lid either with, or without, a cutout for a slide switch. Specifically, dimensions of (or this exact) model slide switch. 

The SCAD also lets you select whether to export the bottom or lid. Parameters are adjustable to remove slide switch cutout, adjust battery size (if using a different model), etc. 

There is also a hole in the sidewalls (which passes through the interior) in case another button or u.FL connection needs to pass through. 

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