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Update dev-guide-new-shield.md

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Mamoor Jaan Khan 2020-09-10 09:59:33 +05:30 committed by GitHub
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docs/docs/dev-guide-new-shield.md
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@ -64,6 +64,8 @@ endif
## Shield Overlay
![Labelled Pro Micro Image](pro-micro-labelled-image.jpg)
The `<shield_name>.overlay` is the devicetree description of the keyboard shield that is merged with the primary board devicetree description before the build. For ZMK, this file at a minimum should include the [chosen]() node named `zmk,kscan` that references a KSCAN driver instance. For a simple 3x3 macropad matrix,
this might look something like: