feat(shield): Add Architeuthis Dux shield

app/boards/shields/architeuthis_dux/Kconfig.defconfig

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+# Copyright (c) 2021 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+if SHIELD_ARCHITEUTHIS_DUX_LEFT
+
+config ZMK_KEYBOARD_NAME
+	default "Architeuthis Dux"
+
+config ZMK_SPLIT_BLE_ROLE_CENTRAL
+	default y
+
+endif
+
+if SHIELD_ARCHITEUTHIS_DUX_RIGHT
+
+config ZMK_KEYBOARD_NAME
+	default "A. Dux Right"
+
+endif
+
+if SHIELD_ARCHITEUTHIS_DUX_LEFT || SHIELD_ARCHITEUTHIS_DUX_RIGHT
+
+config ZMK_SPLIT
+	default y
+
+endif

app/boards/shields/architeuthis_dux/Kconfig.shield

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+# Copyright (c) 2021 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+config SHIELD_ARCHITEUTHIS_DUX_LEFT
+	def_bool $(shields_list_contains,architeuthis_dux_left)
+
+config SHIELD_ARCHITEUTHIS_DUX_RIGHT
+	def_bool $(shields_list_contains,architeuthis_dux_right)

app/boards/shields/architeuthis_dux/README.md

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+# Architeuthis Dux
+
+Shield configuration for [Architeuthis Dux by Tapi][1].
+
+![Wireless Architeuthis Dux with nice!nano controllers][2]
+
+This shield is an adaptation of the direct pin [Cradio shield by @davidphilipbarr][3].
+
+## Cephalopoda
+
+Check out the rest of Tapi's Cephalopoda collection of low profile split ergonomic mechanical keyboards at <https://github.com/tapioki/cephalopoda>.
+
+[1]: https://github.com/tapioki/cephalopoda/tree/main/Architeuthis%20dux
+[2]: https://media.discordapp.net/attachments/855822038287908864/866315666802081792/image0.jpg
+[3]: https://github.com/zmkfirmware/zmk/tree/main/app/boards/shields/cradio

app/boards/shields/architeuthis_dux/architeuthis_dux.conf

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+# Copyright (c) 2021 The ZMK Contributors
+# SPDX-License-Identifier: MIT

app/boards/shields/architeuthis_dux/architeuthis_dux.dtsi

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+/*
+ * Copyright (c) 2021 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <dt-bindings/zmk/matrix_transform.h>
+
+/ {
+
+	chosen {
+		zmk,kscan = &kscan0;
+		zmk,matrix_transform = &default_transform;
+	};
+
+	default_transform: keymap_transform_0 {
+		compatible = "zmk,matrix-transform";
+		columns = <34>;
+		rows = <1>;
+		map = <
+			RC(0,0)  RC(0,1)  RC(0,2)  RC(0,3)  RC(0,4)    RC(0,21) RC(0,20) RC(0,19) RC(0,18) RC(0,17)
+			RC(0,5)  RC(0,6)  RC(0,7)  RC(0,8)  RC(0,9)    RC(0,26) RC(0,25) RC(0,24) RC(0,23) RC(0,22)
+			RC(0,10) RC(0,11) RC(0,12) RC(0,13) RC(0,14)   RC(0,31) RC(0,30) RC(0,29) RC(0,28) RC(0,27)
+			                           RC(0,15) RC(0,16)   RC(0,33) RC(0,32)
+		>;
+	};
+
+	kscan0: kscan {
+		compatible = "zmk,kscan-gpio-direct";
+		label = "KSCAN";
+		input-gpios =
+			<&pro_micro_d  5 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
+			<&pro_micro_d  0 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
+			<&pro_micro_a  0 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
+			<&pro_micro_d 16 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
+			<&pro_micro_a  3 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
+			<&pro_micro_d  6 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
+			<&pro_micro_d  3 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
+			<&pro_micro_a  1 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
+			<&pro_micro_d 14 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
+			<&pro_micro_a  2 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
+			<&pro_micro_d  7 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
+			<&pro_micro_d  4 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
+			<&pro_micro_d  1 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
+			<&pro_micro_d 15 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
+			<&pro_micro_d 10 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
+			<&pro_micro_d  8 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
+			<&pro_micro_d  9 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>
+		;
+	};
+
+};

app/boards/shields/architeuthis_dux/architeuthis_dux.keymap

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+/*
+ * Copyright (c) 2021 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <behaviors.dtsi>
+#include <dt-bindings/zmk/keys.h>
+
+/ {
+
+	keymap {
+		compatible = "zmk,keymap";
+
+		// This is a sample keymap intended to be replaced with your own
+		base_layer {
+			bindings = <
+				&kp Q     &kp W     &kp E     &kp R     &kp T     &kp Y     &kp U     &kp I     &kp O     &kp P
+				&kp A     &kp S     &kp D     &kp F     &kp G     &kp H     &kp J     &kp K     &kp L     &kp SEMI
+				&kp Z     &kp X     &kp C     &kp V     &kp B     &kp N     &kp M     &kp COMMA &kp DOT   &kp SLASH
+				                              &kp TAB   &kp BSPC  &kp SPACE &kp ENTER
+			>;
+		};
+
+	};
+};

app/boards/shields/architeuthis_dux/architeuthis_dux.zmk.yml

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+file_format: "1"
+id: architeuthis_dux
+name: Architeuthis Dux
+type: shield
+url: https://github.com/tapioki/cephalopoda/
+requires: [pro_micro]
+features:
+  - keys
+siblings:
+  - architeuthis_dux_left
+  - architeuthis_dux_right

app/boards/shields/architeuthis_dux/architeuthis_dux_left.overlay

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+/*
+ * Copyright (c) 2021 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include "architeuthis_dux.dtsi"

app/boards/shields/architeuthis_dux/architeuthis_dux_right.overlay

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+/*
+ * Copyright (c) 2021 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include "architeuthis_dux.dtsi"
+
+&default_transform {
+	col-offset = <17>;
+};