[Keyboard] add YMDK40 AIR40 (#19276)

Co-authored-by: jack <0x6a73@protonmail.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>

9 files changed, 646 insertions, 0 deletions

diff --git a/keyboards/ymdk/ymd40/air40/air40.c b/keyboards/ymdk/ymd40/air40/air40.c
new file mode 100644
index 0000000000..50e7ad9106
--- /dev/null
+++ b/keyboards/ymdk/ymd40/air40/air40.c
@@ -0,0 +1,43 @@
+/* Copyright 2022 Dennis Kruyt (dennis@kruyt.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "air40.h"
+
+#if defined(RGB_MATRIX_ENABLE)
+led_config_t g_led_config = {
+    {
+        // Key Matrix to LED Index for center 2u
+        {11, 10,  9,  8, 7,  6,  5,  4,  3,  2,  1,  0},
+        {23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12},
+        {35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24},
+        {50, 49, 48, 47, 46, 43, 41, 40, 39, 38, 37, 36}
+    }, {
+        // LED Index to Physical Position, more positions due to extra leds for other layout options
+        {  0,  0}, { 20,  0}, { 40,  0}, {61,  0}, {81,  0}, {101,  0}, {122,  0}, {142,  0}, {162,  0}, {183,  0}, {203,  0}, {224,  0},
+        {  0, 21}, { 20, 21}, { 40, 21}, {61, 21}, {81, 21}, {101, 21}, {122, 21}, {142, 21}, {162, 21}, {183, 21}, {203, 21}, {224, 21},
+        {  0, 42}, { 20, 42}, { 40, 42}, {61, 42}, {81, 42}, {101, 42}, {122, 42}, {142, 42}, {162, 42}, {183, 42}, {203, 42}, {224, 42},
+        {  0, 64}, { 20, 64}, { 40, 64}, {61, 64}, {81, 64}, {85, 64}, {94, 64}, {103, 64}, {112, 64}, {122, 64}, {142, 64}, {162, 64}, {183, 64}, {203, 64}, {224, 64}
+    
+    }, {
+        // LED Index to Flag
+        1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1,
+        1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1,
+        1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1,
+        1, 1, 1, 1, 1, 1 ,1 ,1, 1, 1, 1, 1, 1, 1, 1 
+       
+    }
+};
+#endif
diff --git a/keyboards/ymdk/ymd40/air40/air40.h b/keyboards/ymdk/ymd40/air40/air40.h
new file mode 100644
index 0000000000..d28f6d591a
--- /dev/null
+++ b/keyboards/ymdk/ymd40/air40/air40.h
@@ -0,0 +1,79 @@
+/* Copyright 2021 James Young (@noroadsleft)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "quantum.h"
+
+#define LAYOUT_ortho_4x12( \
+    K00, K01, K02, K03, K04, K05, K06, K07, K08, K09, K0A, K0B,   \
+    K10, K11, K12, K13, K14, K15, K16, K17, K18, K19, K1A, K1B,   \
+    K20, K21, K22, K23, K24, K25, K26, K27, K28, K29, K2A, K2B,   \
+    K30, K31, K32, K33, K34, K35, K36, K37, K38, K39, K3A, K3B    \
+) { \
+    { K00,   K01,   K02,   K03,   K04,   K05,   K06,   K07,   K08,   K09,   K0A,   K0B   }, \
+    { K10,   K11,   K12,   K13,   K14,   K15,   K16,   K17,   K18,   K19,   K1A,   K1B   }, \
+    { K20,   K21,   K22,   K23,   K24,   K25,   K26,   K27,   K28,   K29,   K2A,   K2B   }, \
+    { K30,   K31,   K32,   K33,   K34,   K35,   K36,   K37,   K38,   K39,   K3A,   K3B   }, \
+}
+
+#define LAYOUT_ortho_4x12_2x2u( \
+    K00, K01, K02, K03, K04, K05, K06, K07, K08, K09, K0A, K0B,   \
+    K10, K11, K12, K13, K14, K15, K16, K17, K18, K19, K1A, K1B,   \
+    K20, K21, K22, K23, K24, K25, K26, K27, K28, K29, K2A, K2B,   \
+    K30, K31, K32, K33,   K34,      K37,    K38, K39, K3A, K3B    \
+) { \
+    { K00,   K01,   K02,   K03,   K04,   K05,   K06,   K07,   K08,   K09,   K0A,   K0B   }, \
+    { K10,   K11,   K12,   K13,   K14,   K15,   K16,   K17,   K18,   K19,   K1A,   K1B   }, \
+    { K20,   K21,   K22,   K23,   K24,   K25,   K26,   K27,   K28,   K29,   K2A,   K2B   }, \
+    { K30,   K31,   K32,   K33,   K34,   KC_NO, KC_NO, K37,   K38,   K39,   K3A,   K3B   }, \
+}
+
+#define LAYOUT_ortho_4x12_1x2uR( \
+    K00, K01, K02, K03, K04, K05, K06, K07, K08, K09, K0A, K0B,   \
+    K10, K11, K12, K13, K14, K15, K16, K17, K18, K19, K1A, K1B,   \
+    K20, K21, K22, K23, K24, K25, K26, K27, K28, K29, K2A, K2B,   \
+    K30, K31, K32, K33, K34, K35,    K37,   K38, K39, K3A, K3B    \
+) { \
+    { K00,   K01,   K02,   K03,   K04,   K05,   K06,   K07,   K08,   K09,   K0A,   K0B   }, \
+    { K10,   K11,   K12,   K13,   K14,   K15,   K16,   K17,   K18,   K19,   K1A,   K1B   }, \
+    { K20,   K21,   K22,   K23,   K24,   K25,   K26,   K27,   K28,   K29,   K2A,   K2B   }, \
+    { K30,   K31,   K32,   K33,   K34,   K35,   KC_NO, K37,   K38,   K39,   K3A,   K3B   }, \
+}
+
+#define LAYOUT_ortho_4x12_1x2uL( \
+    K00, K01, K02, K03, K04, K05, K06, K07, K08, K09, K0A, K0B,   \
+    K10, K11, K12, K13, K14, K15, K16, K17, K18, K19, K1A, K1B,   \
+    K20, K21, K22, K23, K24, K25, K26, K27, K28, K29, K2A, K2B,   \
+    K30, K31, K32, K33,    K34,   K36, K37, K38, K39, K3A, K3B    \
+) { \
+    { K00,   K01,   K02,   K03,   K04,   K05,   K06,   K07,   K08,   K09,   K0A,   K0B   }, \
+    { K10,   K11,   K12,   K13,   K14,   K15,   K16,   K17,   K18,   K19,   K1A,   K1B   }, \
+    { K20,   K21,   K22,   K23,   K24,   K25,   K26,   K27,   K28,   K29,   K2A,   K2B   }, \
+    { K30,   K31,   K32,   K33,   K34,   KC_NO, K36,   K37,   K38,   K39,   K3A,   K3B   }, \
+}
+
+#define LAYOUT_ortho_4x12_1x2uC( \
+    K00, K01, K02, K03, K04, K05, K06, K07, K08, K09, K0A, K0B,   \
+    K10, K11, K12, K13, K14, K15, K16, K17, K18, K19, K1A, K1B,   \
+    K20, K21, K22, K23, K24, K25, K26, K27, K28, K29, K2A, K2B,   \
+    K30, K31, K32, K33, K34,    K35,   K37, K38, K39, K3A, K3B    \
+) { \
+    { K00,   K01,   K02,   K03,   K04,   K05,   K06,   K07,   K08,   K09,   K0A,   K0B   }, \
+    { K10,   K11,   K12,   K13,   K14,   K15,   K16,   K17,   K18,   K19,   K1A,   K1B   }, \
+    { K20,   K21,   K22,   K23,   K24,   K25,   K26,   K27,   K28,   K29,   K2A,   K2B   }, \
+    { K30,   K31,   K32,   K33,   K34,   K35,   KC_NO, K37,   K38,   K39,   K3A,   K3B   }, \
+}
diff --git a/keyboards/ymdk/ymd40/air40/config.h b/keyboards/ymdk/ymd40/air40/config.h
new file mode 100644
index 0000000000..78a7ba5c04
--- /dev/null
+++ b/keyboards/ymdk/ymd40/air40/config.h
@@ -0,0 +1,94 @@
+/* Copyright 2021 Dennis Kruyt (dennis@kruyt.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "config_common.h"
+
+/* key matrix size */
+#define MATRIX_ROWS 4
+#define MATRIX_COLS 12
+
+/*
+ * Keyboard Matrix Assignments
+ *
+ * Change this to how you wired your keyboard
+ * COLS: AVR pins used for columns, left to right
+ * ROWS: AVR pins used for rows, top to bottom
+ * DIODE_DIRECTION: COL2ROW = COL = Anode (+), ROW = Cathode (-, marked on diode)
+ *                  ROW2COL = ROW = Anode (+), COL = Cathode (-, marked on diode)
+ *
+ */
+#define MATRIX_ROW_PINS { D0, B3, B2, B1 }
+#define MATRIX_COL_PINS { F1, F0, B0, C7, F4, F5, F6, F7, D4, D6, B4, D7 }
+
+#define DIODE_DIRECTION COL2ROW
+
+#define RGB_DI_PIN E2
+#define RGB_MATRIX_LED_COUNT 51
+#ifdef RGB_MATRIX_ENABLE
+#    define RGB_MATRIX_KEYPRESSES // reacts to keypresses
+#    define RGB_MATRIX_MAXIMUM_BRIGHTNESS 130 // Limit to vendor-recommended value
+#    define RGB_DISABLE_WHEN_USB_SUSPENDED // turn off effects when suspended
+// RGB Matrix Animation modes. Explicitly enabled
+// For full list of effects, see:
+// https://docs.qmk.fm/#/feature_rgb_matrix?id=rgb-matrix-effects
+#    define ENABLE_RGB_MATRIX_ALPHAS_MODS
+#    define ENABLE_RGB_MATRIX_GRADIENT_UP_DOWN
+#    define ENABLE_RGB_MATRIX_GRADIENT_LEFT_RIGHT
+#    define ENABLE_RGB_MATRIX_BREATHING
+#    define ENABLE_RGB_MATRIX_BAND_SAT
+#    define ENABLE_RGB_MATRIX_BAND_VAL
+#    define ENABLE_RGB_MATRIX_BAND_PINWHEEL_SAT
+#    define ENABLE_RGB_MATRIX_BAND_PINWHEEL_VAL
+#    define ENABLE_RGB_MATRIX_BAND_SPIRAL_SAT
+#    define ENABLE_RGB_MATRIX_BAND_SPIRAL_VAL
+#    define ENABLE_RGB_MATRIX_CYCLE_ALL
+#    define ENABLE_RGB_MATRIX_CYCLE_LEFT_RIGHT
+#    define ENABLE_RGB_MATRIX_CYCLE_UP_DOWN
+#    define ENABLE_RGB_MATRIX_RAINBOW_MOVING_CHEVRON
+#    define ENABLE_RGB_MATRIX_CYCLE_OUT_IN
+#    define ENABLE_RGB_MATRIX_CYCLE_OUT_IN_DUAL
+#    define ENABLE_RGB_MATRIX_CYCLE_PINWHEEL
+#    define ENABLE_RGB_MATRIX_CYCLE_SPIRAL
+#    define ENABLE_RGB_MATRIX_DUAL_BEACON
+#    define ENABLE_RGB_MATRIX_RAINBOW_BEACON
+#    define ENABLE_RGB_MATRIX_RAINBOW_PINWHEELS
+#    define ENABLE_RGB_MATRIX_RAINDROPS
+#    define ENABLE_RGB_MATRIX_JELLYBEAN_RAINDROPS
+#    define ENABLE_RGB_MATRIX_HUE_BREATHING
+#    define ENABLE_RGB_MATRIX_HUE_PENDULUM
+#    define ENABLE_RGB_MATRIX_HUE_WAVE
+#    define ENABLE_RGB_MATRIX_PIXEL_RAIN
+#    define ENABLE_RGB_MATRIX_PIXEL_FLOW
+#    define ENABLE_RGB_MATRIX_PIXEL_FRACTAL
+// enabled only if RGB_MATRIX_FRAMEBUFFER_EFFECTS is defined
+#    define ENABLE_RGB_MATRIX_TYPING_HEATMAP
+#    define ENABLE_RGB_MATRIX_DIGITAL_RAIN
+// enabled only of RGB_MATRIX_KEYPRESSES or RGB_MATRIX_KEYRELEASES is defined
+#    define ENABLE_RGB_MATRIX_SOLID_REACTIVE_SIMPLE
+#    define ENABLE_RGB_MATRIX_SOLID_REACTIVE
+#    define ENABLE_RGB_MATRIX_SOLID_REACTIVE_WIDE
+#    define ENABLE_RGB_MATRIX_SOLID_REACTIVE_MULTIWIDE
+#    define ENABLE_RGB_MATRIX_SOLID_REACTIVE_CROSS
+#    define ENABLE_RGB_MATRIX_SOLID_REACTIVE_MULTICROSS
+#    define ENABLE_RGB_MATRIX_SOLID_REACTIVE_NEXUS
+#    define ENABLE_RGB_MATRIX_SOLID_REACTIVE_MULTINEXUS
+#    define ENABLE_RGB_MATRIX_SPLASH
+#    define ENABLE_RGB_MATRIX_MULTISPLASH
+#    define ENABLE_RGB_MATRIX_SOLID_SPLASH
+#    define ENABLE_RGB_MATRIX_SOLID_MULTISPLASH
+#endif
\ No newline at end of file
diff --git a/keyboards/ymdk/ymd40/air40/info.json b/keyboards/ymdk/ymd40/air40/info.json
new file mode 100644
index 0000000000..38cc6970ca
--- /dev/null
+++ b/keyboards/ymdk/ymd40/air40/info.json
@@ -0,0 +1,284 @@
+{
+    "keyboard_name": "YMDK Air40",
+    "manufacturer": "YMDK",
+    "url": "",
+    "maintainer": "qmk",
+    "usb": {
+        "vid": "0x45D4",
+        "pid": "0x0911",
+        "device_version": "0.0.1"
+    },
+    "layouts": {
+        "LAYOUT_ortho_4x12": {
+            "layout": [
+                {"label":"K00 (D0,F1)", "x":0, "y":0},
+                {"label":"K01 (D0,F0)", "x":1, "y":0},
+                {"label":"K02 (D0,B0)", "x":2, "y":0},
+                {"label":"K03 (D0,C7)", "x":3, "y":0},
+                {"label":"K04 (D0,F4)", "x":4, "y":0},
+                {"label":"K05 (D0,F5)", "x":5, "y":0},
+                {"label":"K06 (D0,F6)", "x":6, "y":0},
+                {"label":"K07 (D0,F7)", "x":7, "y":0},
+                {"label":"K08 (D0,D4)", "x":8, "y":0},
+                {"label":"K09 (D0,D6)", "x":9, "y":0},
+                {"label":"K0A (D0,B4)", "x":10, "y":0},
+                {"label":"K0B (D0,D7)", "x":11, "y":0},
+
+                {"label":"K10 (B3,F1)", "x":0, "y":1},
+                {"label":"K11 (B3,F0)", "x":1, "y":1},
+                {"label":"K12 (B3,B0)", "x":2, "y":1},
+                {"label":"K13 (B3,C7)", "x":3, "y":1},
+                {"label":"K14 (B3,F4)", "x":4, "y":1},
+                {"label":"K15 (B3,F5)", "x":5, "y":1},
+                {"label":"K16 (B3,F6)", "x":6, "y":1},
+                {"label":"K17 (B3,F7)", "x":7, "y":1},
+                {"label":"K18 (B3,D4)", "x":8, "y":1},
+                {"label":"K19 (B3,D6)", "x":9, "y":1},
+                {"label":"K1A (B3,B4)", "x":10, "y":1},
+                {"label":"K1B (B3,D7)", "x":11, "y":1},
+
+                {"label":"K20 (B2,F1)", "x":0, "y":2},
+                {"label":"K21 (B2,F0)", "x":1, "y":2},
+                {"label":"K22 (B2,B0)", "x":2, "y":2},
+                {"label":"K23 (B2,C7)", "x":3, "y":2},
+                {"label":"K24 (B2,F4)", "x":4, "y":2},
+                {"label":"K25 (B2,F5)", "x":5, "y":2},
+                {"label":"K26 (B2,F6)", "x":6, "y":2},
+                {"label":"K27 (B2,F7)", "x":7, "y":2},
+                {"label":"K28 (B2,D4)", "x":8, "y":2},
+                {"label":"K29 (B2,D6)", "x":9, "y":2},
+                {"label":"K2A (B2,B4)", "x":10, "y":2},
+                {"label":"K2B (B2,D7)", "x":11, "y":2},
+
+                {"label":"K30 (B1,F1)", "x":0, "y":3},
+                {"label":"K31 (B1,F0)", "x":1, "y":3},
+                {"label":"K32 (B1,B0)", "x":2, "y":3},
+                {"label":"K33 (B1,C7)", "x":3, "y":3},
+                {"label":"K34 (B1,F4)", "x":4, "y":3},
+                {"label":"K35 (B1,F5)", "x":5, "y":3},
+                {"label":"K36 (B1,F6)", "x":6, "y":3},
+                {"label":"K37 (B1,F7)", "x":7, "y":3},
+                {"label":"K38 (B1,D4)", "x":8, "y":3},
+                {"label":"K39 (B1,D6)", "x":9, "y":3},
+                {"label":"K3A (B1,B4)", "x":10, "y":3},
+                {"label":"K3B (B1,D7)", "x":11, "y":3}
+            ]
+        },
+        "LAYOUT_ortho_4x12_2x2u": {
+            "layout": [
+                {"label":"K00 (D0,F1)", "x":0, "y":0},
+                {"label":"K01 (D0,F0)", "x":1, "y":0},
+                {"label":"K02 (D0,B0)", "x":2, "y":0},
+                {"label":"K03 (D0,C7)", "x":3, "y":0},
+                {"label":"K04 (D0,F4)", "x":4, "y":0},
+                {"label":"K05 (D0,F5)", "x":5, "y":0},
+                {"label":"K06 (D0,F6)", "x":6, "y":0},
+                {"label":"K07 (D0,F7)", "x":7, "y":0},
+                {"label":"K08 (D0,D4)", "x":8, "y":0},
+                {"label":"K09 (D0,D6)", "x":9, "y":0},
+                {"label":"K0A (D0,B4)", "x":10, "y":0},
+                {"label":"K0B (D0,D7)", "x":11, "y":0},
+
+                {"label":"K10 (B3,F1)", "x":0, "y":1},
+                {"label":"K11 (B3,F0)", "x":1, "y":1},
+                {"label":"K12 (B3,B0)", "x":2, "y":1},
+                {"label":"K13 (B3,C7)", "x":3, "y":1},
+                {"label":"K14 (B3,F4)", "x":4, "y":1},
+                {"label":"K15 (B3,F5)", "x":5, "y":1},
+                {"label":"K16 (B3,F6)", "x":6, "y":1},
+                {"label":"K17 (B3,F7)", "x":7, "y":1},
+                {"label":"K18 (B3,D4)", "x":8, "y":1},
+                {"label":"K19 (B3,D6)", "x":9, "y":1},
+                {"label":"K1A (B3,B4)", "x":10, "y":1},
+                {"label":"K1B (B3,D7)", "x":11, "y":1},
+
+                {"label":"K20 (B2,F1)", "x":0, "y":2},
+                {"label":"K21 (B2,F0)", "x":1, "y":2},
+                {"label":"K22 (B2,B0)", "x":2, "y":2},
+                {"label":"K23 (B2,C7)", "x":3, "y":2},
+                {"label":"K24 (B2,F4)", "x":4, "y":2},
+                {"label":"K25 (B2,F5)", "x":5, "y":2},
+                {"label":"K26 (B2,F6)", "x":6, "y":2},
+                {"label":"K27 (B2,F7)", "x":7, "y":2},
+                {"label":"K28 (B2,D4)", "x":8, "y":2},
+                {"label":"K29 (B2,D6)", "x":9, "y":2},
+                {"label":"K2A (B2,B4)", "x":10, "y":2},
+                {"label":"K2B (B2,D7)", "x":11, "y":2},
+
+                {"label":"K30 (B1,F1)", "x":0, "y":3},
+                {"label":"K31 (B1,F0)", "x":1, "y":3},
+                {"label":"K32 (B1,B0)", "x":2, "y":3},
+                {"label":"K33 (B1,C7)", "x":3, "y":3},
+                {"label":"K34 (B1,F4)", "x":4, "y":3, "w":2},
+                {"label":"K37 (B1,F7)", "x":6, "y":3, "w":2},
+                {"label":"K38 (B1,D4)", "x":8, "y":3},
+                {"label":"K39 (B1,D6)", "x":9, "y":3},
+                {"label":"K3A (B1,B4)", "x":10, "y":3},
+                {"label":"K3B (B1,D7)", "x":11, "y":3}
+            ]
+        },
+        "LAYOUT_ortho_4x12_1x2uR": {
+            "layout": [
+                {"label":"K00 (D0,F1)", "x":0, "y":0},
+                {"label":"K01 (D0,F0)", "x":1, "y":0},
+                {"label":"K02 (D0,B0)", "x":2, "y":0},
+                {"label":"K03 (D0,C7)", "x":3, "y":0},
+                {"label":"K04 (D0,F4)", "x":4, "y":0},
+                {"label":"K05 (D0,F5)", "x":5, "y":0},
+                {"label":"K06 (D0,F6)", "x":6, "y":0},
+                {"label":"K07 (D0,F7)", "x":7, "y":0},
+                {"label":"K08 (D0,D4)", "x":8, "y":0},
+                {"label":"K09 (D0,D6)", "x":9, "y":0},
+                {"label":"K0A (D0,B4)", "x":10, "y":0},
+                {"label":"K0B (D0,D7)", "x":11, "y":0},
+
+                {"label":"K10 (B3,F1)", "x":0, "y":1},
+                {"label":"K11 (B3,F0)", "x":1, "y":1},
+                {"label":"K12 (B3,B0)", "x":2, "y":1},
+                {"label":"K13 (B3,C7)", "x":3, "y":1},
+                {"label":"K14 (B3,F4)", "x":4, "y":1},
+                {"label":"K15 (B3,F5)", "x":5, "y":1},
+                {"label":"K16 (B3,F6)", "x":6, "y":1},
+                {"label":"K17 (B3,F7)", "x":7, "y":1},
+                {"label":"K18 (B3,D4)", "x":8, "y":1},
+                {"label":"K19 (B3,D6)", "x":9, "y":1},
+                {"label":"K1A (B3,B4)", "x":10, "y":1},
+                {"label":"K1B (B3,D7)", "x":11, "y":1},
+
+                {"label":"K20 (B2,F1)", "x":0, "y":2},
+                {"label":"K21 (B2,F0)", "x":1, "y":2},
+                {"label":"K22 (B2,B0)", "x":2, "y":2},
+                {"label":"K23 (B2,C7)", "x":3, "y":2},
+                {"label":"K24 (B2,F4)", "x":4, "y":2},
+                {"label":"K25 (B2,F5)", "x":5, "y":2},
+                {"label":"K26 (B2,F6)", "x":6, "y":2},
+                {"label":"K27 (B2,F7)", "x":7, "y":2},
+                {"label":"K28 (B2,D4)", "x":8, "y":2},
+                {"label":"K29 (B2,D6)", "x":9, "y":2},
+                {"label":"K2A (B2,B4)", "x":10, "y":2},
+                {"label":"K2B (B2,D7)", "x":11, "y":2},
+
+                {"label":"K30 (B1,F1)", "x":0, "y":3},
+                {"label":"K31 (B1,F0)", "x":1, "y":3},
+                {"label":"K32 (B1,B0)", "x":2, "y":3},
+                {"label":"K33 (B1,C7)", "x":3, "y":3},
+                {"label":"K34 (B1,F4)", "x":4, "y":3},
+                {"label":"K35 (B1,F5)", "x":5, "y":3},
+                {"label":"K37 (B1,F7)", "x":6, "y":3, "w":2},
+                {"label":"K38 (B1,D4)", "x":8, "y":3},
+                {"label":"K39 (B1,D6)", "x":9, "y":3},
+                {"label":"K3A (B1,B4)", "x":10, "y":3},
+                {"label":"K3B (B1,D7)", "x":11, "y":3}
+            ]
+        },
+        "LAYOUT_ortho_4x12_1x2uL": {
+            "layout": [
+                {"label":"K00 (D0,F1)", "x":0, "y":0},
+                {"label":"K01 (D0,F0)", "x":1, "y":0},
+                {"label":"K02 (D0,B0)", "x":2, "y":0},
+                {"label":"K03 (D0,C7)", "x":3, "y":0},
+                {"label":"K04 (D0,F4)", "x":4, "y":0},
+                {"label":"K05 (D0,F5)", "x":5, "y":0},
+                {"label":"K06 (D0,F6)", "x":6, "y":0},
+                {"label":"K07 (D0,F7)", "x":7, "y":0},
+                {"label":"K08 (D0,D4)", "x":8, "y":0},
+                {"label":"K09 (D0,D6)", "x":9, "y":0},
+                {"label":"K0A (D0,B4)", "x":10, "y":0},
+                {"label":"K0B (D0,D7)", "x":11, "y":0},
+
+                {"label":"K10 (B3,F1)", "x":0, "y":1},
+                {"label":"K11 (B3,F0)", "x":1, "y":1},
+                {"label":"K12 (B3,B0)", "x":2, "y":1},
+                {"label":"K13 (B3,C7)", "x":3, "y":1},
+                {"label":"K14 (B3,F4)", "x":4, "y":1},
+                {"label":"K15 (B3,F5)", "x":5, "y":1},
+                {"label":"K16 (B3,F6)", "x":6, "y":1},
+                {"label":"K17 (B3,F7)", "x":7, "y":1},
+                {"label":"K18 (B3,D4)", "x":8, "y":1},
+                {"label":"K19 (B3,D6)", "x":9, "y":1},
+                {"label":"K1A (B3,B4)", "x":10, "y":1},
+                {"label":"K1B (B3,D7)", "x":11, "y":1},
+
+                {"label":"K20 (B2,F1)", "x":0, "y":2},
+                {"label":"K21 (B2,F0)", "x":1, "y":2},
+                {"label":"K22 (B2,B0)", "x":2, "y":2},
+                {"label":"K23 (B2,C7)", "x":3, "y":2},
+                {"label":"K24 (B2,F4)", "x":4, "y":2},
+                {"label":"K25 (B2,F5)", "x":5, "y":2},
+                {"label":"K26 (B2,F6)", "x":6, "y":2},
+                {"label":"K27 (B2,F7)", "x":7, "y":2},
+                {"label":"K28 (B2,D4)", "x":8, "y":2},
+                {"label":"K29 (B2,D6)", "x":9, "y":2},
+                {"label":"K2A (B2,B4)", "x":10, "y":2},
+                {"label":"K2B (B2,D7)", "x":11, "y":2},
+
+                {"label":"K30 (B1,F1)", "x":0, "y":3},
+                {"label":"K31 (B1,F0)", "x":1, "y":3},
+                {"label":"K32 (B1,B0)", "x":2, "y":3},
+                {"label":"K33 (B1,C7)", "x":3, "y":3},
+                {"label":"K34 (B1,F4)", "x":4, "y":3, "w":2},
+                {"label":"K36 (B1,F6)", "x":6, "y":3},
+                {"label":"K37 (B1,F7)", "x":7, "y":3},
+                {"label":"K38 (B1,D4)", "x":8, "y":3},
+                {"label":"K39 (B1,D6)", "x":9, "y":3},
+                {"label":"K3A (B1,B4)", "x":10, "y":3},
+                {"label":"K3B (B1,D7)", "x":11, "y":3}
+            ]
+        },
+        "LAYOUT_ortho_4x12_1x2uC": {
+            "layout": [
+                {"label":"K00 (D0,F1)", "x":0, "y":0},
+                {"label":"K01 (D0,F0)", "x":1, "y":0},
+                {"label":"K02 (D0,B0)", "x":2, "y":0},
+                {"label":"K03 (D0,C7)", "x":3, "y":0},
+                {"label":"K04 (D0,F4)", "x":4, "y":0},
+                {"label":"K05 (D0,F5)", "x":5, "y":0},
+                {"label":"K06 (D0,F6)", "x":6, "y":0},
+                {"label":"K07 (D0,F7)", "x":7, "y":0},
+                {"label":"K08 (D0,D4)", "x":8, "y":0},
+                {"label":"K09 (D0,D6)", "x":9, "y":0},
+                {"label":"K0A (D0,B4)", "x":10, "y":0},
+                {"label":"K0B (D0,D7)", "x":11, "y":0},
+
+                {"label":"K10 (B3,F1)", "x":0, "y":1},
+                {"label":"K11 (B3,F0)", "x":1, "y":1},
+                {"label":"K12 (B3,B0)", "x":2, "y":1},
+                {"label":"K13 (B3,C7)", "x":3, "y":1},
+                {"label":"K14 (B3,F4)", "x":4, "y":1},
+                {"label":"K15 (B3,F5)", "x":5, "y":1},
+                {"label":"K16 (B3,F6)", "x":6, "y":1},
+                {"label":"K17 (B3,F7)", "x":7, "y":1},
+                {"label":"K18 (B3,D4)", "x":8, "y":1},
+                {"label":"K19 (B3,D6)", "x":9, "y":1},
+                {"label":"K1A (B3,B4)", "x":10, "y":1},
+                {"label":"K1B (B3,D7)", "x":11, "y":1},
+
+                {"label":"K20 (B2,F1)", "x":0, "y":2},
+                {"label":"K21 (B2,F0)", "x":1, "y":2},
+                {"label":"K22 (B2,B0)", "x":2, "y":2},
+                {"label":"K23 (B2,C7)", "x":3, "y":2},
+                {"label":"K24 (B2,F4)", "x":4, "y":2},
+                {"label":"K25 (B2,F5)", "x":5, "y":2},
+                {"label":"K26 (B2,F6)", "x":6, "y":2},
+                {"label":"K27 (B2,F7)", "x":7, "y":2},
+                {"label":"K28 (B2,D4)", "x":8, "y":2},
+                {"label":"K29 (B2,D6)", "x":9, "y":2},
+                {"label":"K2A (B2,B4)", "x":10, "y":2},
+                {"label":"K2B (B2,D7)", "x":11, "y":2},
+
+                {"label":"K30 (B1,F1)", "x":0, "y":3},
+                {"label":"K31 (B1,F0)", "x":1, "y":3},
+                {"label":"K32 (B1,B0)", "x":2, "y":3},
+                {"label":"K33 (B1,C7)", "x":3, "y":3},
+                {"label":"K34 (B1,F4)", "x":4, "y":3},
+                {"label":"K35 (B1,F5)", "x":5, "y":3, "w":2},
+                {"label":"K37 (B1,F7)", "x":7, "y":3},
+                {"label":"K38 (B1,D4)", "x":8, "y":3},
+                {"label":"K39 (B1,D6)", "x":9, "y":3},
+                {"label":"K3A (B1,B4)", "x":10, "y":3},
+                {"label":"K3B (B1,D7)", "x":11, "y":3}
+            ]
+        }
+
+    }
+}
diff --git a/keyboards/ymdk/ymd40/air40/keymaps/default/keymap.c b/keyboards/ymdk/ymd40/air40/keymaps/default/keymap.c
new file mode 100644
index 0000000000..b798dce7b2
--- /dev/null
+++ b/keyboards/ymdk/ymd40/air40/keymaps/default/keymap.c
@@ -0,0 +1,55 @@
+/* Copyright 2022 Dennis Kruyt (dennis@kruyt.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include QMK_KEYBOARD_H
+
+enum layer_names {
+  _QWERTY,
+  _LOWER,
+  _RAISE,
+  _ADJUST
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [_QWERTY] = LAYOUT_ortho_4x12(
+        KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_BSPC,
+        KC_ESC,  KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,
+        KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT,
+        KC_CAPS, KC_LCTL, KC_LALT, KC_LGUI, MO(1),   KC_SPC,  KC_SPC,  MO(2),   KC_UP,   KC_LEFT, KC_DOWN, KC_RGHT
+    ),
+    [_LOWER] = LAYOUT_ortho_4x12(
+        KC_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR,    KC_ASTR,    KC_LPRN, KC_RPRN, KC_BSPC,
+        KC_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_UNDS,    KC_PLUS,    KC_LCBR, KC_RCBR, KC_PIPE,
+        _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  S(KC_NUHS), S(KC_NUBS), KC_HOME, KC_END,  _______,
+        _______, _______, _______, _______, _______, _______, _______, _______,    KC_MNXT,    KC_VOLD, KC_VOLU, KC_MPLY
+    ),
+    [_RAISE] = LAYOUT_ortho_4x12(
+        KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_BSPC,
+        KC_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, KC_BSLS,
+        _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_NUHS, KC_NUBS, KC_PGUP, KC_PGDN, _______,
+        _______, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY
+    ),
+    [_ADJUST] = LAYOUT_ortho_4x12(
+        QK_BOOT, RGB_TOG, RGB_HUI, RGB_SAI, RGB_VAI, _______, _______, _______, _______, _______, _______, DB_TOGG,
+        _______, RGB_MOD, RGB_HUD, RGB_SAD, RGB_VAD, AG_NORM, AG_SWAP, _______, _______, _______, _______, _______,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______
+    )
+};
+
+layer_state_t layer_state_set_user(layer_state_t state) {
+  return update_tri_layer_state(state, _LOWER, _RAISE, _ADJUST);
+}
diff --git a/keyboards/ymdk/ymd40/air40/keymaps/via/keymap.c b/keyboards/ymdk/ymd40/air40/keymaps/via/keymap.c
new file mode 100644
index 0000000000..c7b3e4d39c
--- /dev/null
+++ b/keyboards/ymdk/ymd40/air40/keymaps/via/keymap.c
@@ -0,0 +1,44 @@
+/* Copyright 2022 Dennis Kruyt (dennis@kruyt.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT_ortho_4x12(
+        KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_BSPC,
+        KC_ESC,  KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,
+        KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_UP,   KC_ENT,
+        KC_LCTL, KC_LALT, KC_LGUI, KC_PIPE, MO(1),   KC_SPC,  KC_SPC,  MO(2),   KC_SLSH, KC_LEFT, KC_DOWN, KC_RGHT
+    ),
+    [1] = LAYOUT_ortho_4x12(
+        KC_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR,    KC_ASTR,    KC_LPRN, KC_RPRN,  KC_DEL,
+        KC_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_UNDS,    KC_PLUS,    KC_LCBR, KC_RCBR, KC_PIPE,
+        _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  S(KC_NUHS), S(KC_NUBS), _______, KC_VOLU, _______,
+        _______, _______, _______, _______, _______, _______, _______, MO(3),      _______,    KC_MNXT, KC_VOLD, KC_MPLY
+    ),
+    [2] = LAYOUT_ortho_4x12(
+        KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_DEL,
+        KC_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, KC_BSLS,
+        _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_NUHS, KC_NUBS, _______, KC_PGUP, _______,
+        _______, _______, _______, _______, MO(3),   _______, _______, _______, _______, KC_HOME, KC_PGDN, KC_END
+    ),
+    [3] = LAYOUT_ortho_4x12(
+        QK_BOOT, RGB_TOG, RGB_HUI, RGB_SAI, RGB_VAI, _______, _______, _______, _______, _______, _______, DB_TOGG,
+        _______, RGB_MOD, RGB_HUD, RGB_SAD, RGB_VAD, _______, _______, _______, _______, _______, _______, _______,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______
+    )
+};
diff --git a/keyboards/ymdk/ymd40/air40/keymaps/via/rules.mk b/keyboards/ymdk/ymd40/air40/keymaps/via/rules.mk
new file mode 100644
index 0000000000..43061db1dd
--- /dev/null
+++ b/keyboards/ymdk/ymd40/air40/keymaps/via/rules.mk
@@ -0,0 +1,2 @@
+VIA_ENABLE = yes
+LTO_ENABLE = yes
\ No newline at end of file
diff --git a/keyboards/ymdk/ymd40/air40/readme.md b/keyboards/ymdk/ymd40/air40/readme.md
new file mode 100644
index 0000000000..31bf509c2f
--- /dev/null
+++ b/keyboards/ymdk/ymd40/air40/readme.md
@@ -0,0 +1,19 @@
+# YMD40 AIR40
+
+A 40% ortholinear keyboard with per switch LED support and USB Type C.
+
+* Keyboard Maintainer: [The QMK Community](https://github.com/qmk)
+* Hardware Supported: YMD40 AIR40 PCB (ATmega32U4)
+* Hardware Availability: [ymdkey.com](https://ymdkey.com/collections/40-mini-diy/products/air40-rgb-hot-swap-cute-40-mechanical-keyboard-assembled-qmk-via-type-c-pcb-cnc-case-plate-kit)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make ymdk/ymd40/air40:default
+
+Flashing example for this keyboard:
+
+    make ymdk/ymd40/air40:default:flash
+
+To reset the board into bootloader mode, hold the key at the top left of the keyboard while connecting the USB cable (also erases persistent settings).
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
diff --git a/keyboards/ymdk/ymd40/air40/rules.mk b/keyboards/ymdk/ymd40/air40/rules.mk
new file mode 100644
index 0000000000..3325a699df
--- /dev/null
+++ b/keyboards/ymdk/ymd40/air40/rules.mk
@@ -0,0 +1,26 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = atmel-dfu
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = yes      # Enable Bootmagic Lite
+MOUSEKEY_ENABLE = yes       # Mouse keys
+EXTRAKEY_ENABLE = yes       # Audio control and System control
+CONSOLE_ENABLE = no         # Console for debug
+COMMAND_ENABLE = no         # Commands for debug and configuration
+NKRO_ENABLE = no            # Enable N-Key Rollover
+BACKLIGHT_ENABLE = no      # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = no
+RGBLIGHT_SUPPORTED = no
+RGB_MATRIX_ENABLE = yes
+RGB_MATRIX_DRIVER = WS2812
+AUDIO_ENABLE = no           # Audio output
+AUDIO_SUPPORTED = no
+KEY_LOCK_ENABLE = no
+
+LAYOUTS = ortho_4x12
+