MNK1800s Layout Addition (#20740)

* add matrix_diagram.md

* info.json: apply friendly formatting

* add LAYOUT_2u_bs with reference keymap

3 files changed, 245 insertions, 94 deletions

diff --git a/keyboards/mnk1800s/info.json b/keyboards/mnk1800s/info.json
index 4e09e2ecd0..9cf4f0f122 100755
--- a/keyboards/mnk1800s/info.json
+++ b/keyboards/mnk1800s/info.json
@@ -18,100 +18,197 @@
     "layouts": {
         "LAYOUT_all": {
             "layout": [
-                {"matrix": [0, 0], "x": 0, "y": 0},
-                {"matrix": [0, 1], "x": 1, "y": 0},
-                {"matrix": [0, 2], "x": 2, "y": 0},
-                {"matrix": [0, 3], "x": 3, "y": 0},
-
-                {"matrix": [0, 4], "x": 4.5, "y": 0},
-                {"matrix": [0, 5], "x": 5.5, "y": 0},
-                {"matrix": [0, 6], "x": 6.5, "y": 0},
-                {"matrix": [0, 7], "x": 7.5, "y": 0},
-                {"matrix": [0, 8], "x": 8.5, "y": 0},
-                {"matrix": [0, 9], "x": 9.5, "y": 0},
-                {"matrix": [0, 10], "x": 10.5, "y": 0},
-                {"matrix": [0, 11], "x": 11.5, "y": 0},
-                {"matrix": [0, 12], "x": 12.5, "y": 0},
-                {"matrix": [0, 13], "x": 13.5, "y": 0},
-                {"matrix": [0, 14], "x": 14.5, "y": 0},
-                {"matrix": [0, 15], "x": 15.5, "y": 0},
-                {"matrix": [0, 16], "x": 16.5, "y": 0},
-                {"matrix": [0, 17], "x": 17.5, "y": 0},
-                {"matrix": [2, 17], "x": 18.5, "y": 0},
-
-                {"matrix": [1, 0], "x": 0, "y": 1},
-                {"matrix": [1, 1], "x": 1, "y": 1},
-                {"matrix": [1, 2], "x": 2, "y": 1},
-                {"matrix": [1, 3], "x": 3, "y": 1},
-
-                {"matrix": [1, 4], "x": 4.5, "y": 1, "w": 1.5},
-                {"matrix": [1, 5], "x": 6, "y": 1},
-                {"matrix": [1, 6], "x": 7, "y": 1},
-                {"matrix": [1, 7], "x": 8, "y": 1},
-                {"matrix": [1, 8], "x": 9, "y": 1},
-                {"matrix": [1, 9], "x": 10, "y": 1},
-                {"matrix": [1, 10], "x": 11, "y": 1},
-                {"matrix": [1, 11], "x": 12, "y": 1},
-                {"matrix": [1, 12], "x": 13, "y": 1},
-                {"matrix": [1, 13], "x": 14, "y": 1},
-                {"matrix": [1, 14], "x": 15, "y": 1},
-                {"matrix": [1, 15], "x": 16, "y": 1},
-                {"matrix": [1, 16], "x": 17, "y": 1},
-                {"matrix": [1, 17], "x": 18, "y": 1, "w": 1.5},
-
-                {"matrix": [2, 0], "x": 0, "y": 2},
-                {"matrix": [2, 1], "x": 1, "y": 2},
-                {"matrix": [2, 2], "x": 2, "y": 2},
-                {"matrix": [2, 3], "x": 3, "y": 2},
-
-                {"matrix": [2, 4], "x": 4.5, "y": 2, "w": 1.75},
-                {"matrix": [2, 5], "x": 6.25, "y": 2},
-                {"matrix": [2, 6], "x": 7.25, "y": 2},
-                {"matrix": [2, 7], "x": 8.25, "y": 2},
-                {"matrix": [2, 8], "x": 9.25, "y": 2},
-                {"matrix": [2, 9], "x": 10.25, "y": 2},
-                {"matrix": [2, 10], "x": 11.25, "y": 2},
-                {"matrix": [2, 11], "x": 12.25, "y": 2},
-                {"matrix": [2, 12], "x": 13.25, "y": 2},
-                {"matrix": [2, 13], "x": 14.25, "y": 2},
-                {"matrix": [2, 14], "x": 15.25, "y": 2},
-                {"matrix": [2, 15], "x": 16.25, "y": 2},
-                {"matrix": [2, 16], "x": 17.25, "y": 2, "w": 2.25},
-
-                {"matrix": [3, 0], "x": 0, "y": 3},
-                {"matrix": [3, 1], "x": 1, "y": 3},
-                {"matrix": [3, 2], "x": 2, "y": 3},
-                {"matrix": [4, 8], "x": 3, "y": 3},
-
-                {"matrix": [3, 3], "x": 4.25, "y": 3.25},
-
-                {"matrix": [3, 4], "x": 5.5, "y": 3, "w": 1.25},
-                {"matrix": [3, 5], "x": 6.75, "y": 3},
-                {"matrix": [3, 6], "x": 7.75, "y": 3},
-                {"matrix": [3, 7], "x": 8.75, "y": 3},
-                {"matrix": [3, 8], "x": 9.75, "y": 3},
-                {"matrix": [3, 9], "x": 10.75, "y": 3},
-                {"matrix": [3, 10], "x": 11.75, "y": 3},
-                {"matrix": [3, 11], "x": 12.75, "y": 3},
-                {"matrix": [3, 12], "x": 13.75, "y": 3},
-                {"matrix": [3, 13], "x": 14.75, "y": 3},
-                {"matrix": [3, 14], "x": 15.75, "y": 3},
-                {"matrix": [3, 15], "x": 16.75, "y": 3, "w": 1.75},
-                {"matrix": [3, 16], "x": 18.5, "y": 3},
-
-                {"matrix": [4, 0], "x": 0, "y": 4},
-                {"matrix": [4, 1], "x": 1, "y": 4},
-                {"matrix": [4, 2], "x": 2, "y": 4},
-
-                {"matrix": [4, 3], "x": 3.25, "y": 4.25},
-                {"matrix": [4, 4], "x": 4.25, "y": 4.25},
-                {"matrix": [4, 5], "x": 5.25, "y": 4.25},
-
-                {"matrix": [4, 6], "x": 6.5, "y": 4, "w": 1.5},
-                {"matrix": [4, 7], "x": 8, "y": 4, "w": 1.5},
-                {"matrix": [4, 10], "x": 9.5, "y": 4, "w": 7},
-                {"matrix": [4, 15], "x": 16.5, "y": 4, "w": 1.5},
-                {"matrix": [4, 16], "x": 18, "y": 4, "w": 1.5}
+                {"label": "Num Lock", "matrix": [0, 0], "x": 0, "y": 0},
+                {"label": "/", "matrix": [0, 1], "x": 1, "y": 0},
+                {"label": "*", "matrix": [0, 2], "x": 2, "y": 0},
+                {"label": "-", "matrix": [0, 3], "x": 3, "y": 0},
+
+                {"label": "Esc", "matrix": [0, 4], "x": 4.5, "y": 0},
+                {"label": "1", "matrix": [0, 5], "x": 5.5, "y": 0},
+                {"label": "2", "matrix": [0, 6], "x": 6.5, "y": 0},
+                {"label": "3", "matrix": [0, 7], "x": 7.5, "y": 0},
+                {"label": "4", "matrix": [0, 8], "x": 8.5, "y": 0},
+                {"label": "5", "matrix": [0, 9], "x": 9.5, "y": 0},
+                {"label": "6", "matrix": [0, 10], "x": 10.5, "y": 0},
+                {"label": "7", "matrix": [0, 11], "x": 11.5, "y": 0},
+                {"label": "8", "matrix": [0, 12], "x": 12.5, "y": 0},
+                {"label": "9", "matrix": [0, 13], "x": 13.5, "y": 0},
+                {"label": "0", "matrix": [0, 14], "x": 14.5, "y": 0},
+                {"label": "-", "matrix": [0, 15], "x": 15.5, "y": 0},
+                {"label": "=", "matrix": [0, 16], "x": 16.5, "y": 0},
+                {"label": "Backspace", "matrix": [0, 17], "x": 17.5, "y": 0},
+                {"label": "Delete", "matrix": [2, 17], "x": 18.5, "y": 0},
+
+                {"label": "7", "matrix": [1, 0], "x": 0, "y": 1},
+                {"label": "8", "matrix": [1, 1], "x": 1, "y": 1},
+                {"label": "9", "matrix": [1, 2], "x": 2, "y": 1},
+                {"label": "+", "matrix": [1, 3], "x": 3, "y": 1},
+
+                {"label": "Tab", "matrix": [1, 4], "x": 4.5, "y": 1, "w": 1.5},
+                {"label": "Q", "matrix": [1, 5], "x": 6, "y": 1},
+                {"label": "W", "matrix": [1, 6], "x": 7, "y": 1},
+                {"label": "E", "matrix": [1, 7], "x": 8, "y": 1},
+                {"label": "R", "matrix": [1, 8], "x": 9, "y": 1},
+                {"label": "T", "matrix": [1, 9], "x": 10, "y": 1},
+                {"label": "Y", "matrix": [1, 10], "x": 11, "y": 1},
+                {"label": "U", "matrix": [1, 11], "x": 12, "y": 1},
+                {"label": "I", "matrix": [1, 12], "x": 13, "y": 1},
+                {"label": "O", "matrix": [1, 13], "x": 14, "y": 1},
+                {"label": "P", "matrix": [1, 14], "x": 15, "y": 1},
+                {"label": "[", "matrix": [1, 15], "x": 16, "y": 1},
+                {"label": "]", "matrix": [1, 16], "x": 17, "y": 1},
+                {"label": "\\", "matrix": [1, 17], "x": 18, "y": 1, "w": 1.5},
+
+                {"label": "4", "matrix": [2, 0], "x": 0, "y": 2},
+                {"label": "5", "matrix": [2, 1], "x": 1, "y": 2},
+                {"label": "6", "matrix": [2, 2], "x": 2, "y": 2},
+                {"label": "Enter", "matrix": [2, 3], "x": 3, "y": 2},
+
+                {"label": "Ctrl", "matrix": [2, 4], "x": 4.5, "y": 2, "w": 1.75},
+                {"label": "A", "matrix": [2, 5], "x": 6.25, "y": 2},
+                {"label": "S", "matrix": [2, 6], "x": 7.25, "y": 2},
+                {"label": "D", "matrix": [2, 7], "x": 8.25, "y": 2},
+                {"label": "F", "matrix": [2, 8], "x": 9.25, "y": 2},
+                {"label": "G", "matrix": [2, 9], "x": 10.25, "y": 2},
+                {"label": "H", "matrix": [2, 10], "x": 11.25, "y": 2},
+                {"label": "J", "matrix": [2, 11], "x": 12.25, "y": 2},
+                {"label": "K", "matrix": [2, 12], "x": 13.25, "y": 2},
+                {"label": "L", "matrix": [2, 13], "x": 14.25, "y": 2},
+                {"label": ";", "matrix": [2, 14], "x": 15.25, "y": 2},
+                {"label": "'", "matrix": [2, 15], "x": 16.25, "y": 2},
+                {"label": "Enter", "matrix": [2, 16], "x": 17.25, "y": 2, "w": 2.25},
+
+                {"label": "1", "matrix": [3, 0], "x": 0, "y": 3},
+                {"label": "2", "matrix": [3, 1], "x": 1, "y": 3},
+                {"label": "3", "matrix": [3, 2], "x": 2, "y": 3},
+                {"label": "Enter", "matrix": [4, 8], "x": 3, "y": 3},
+
+                {"label": "\u2191", "matrix": [3, 3], "x": 4.25, "y": 3.25},
+
+                {"label": "Shift", "matrix": [3, 4], "x": 5.5, "y": 3, "w": 1.25},
+                {"label": "Z", "matrix": [3, 5], "x": 6.75, "y": 3},
+                {"label": "X", "matrix": [3, 6], "x": 7.75, "y": 3},
+                {"label": "C", "matrix": [3, 7], "x": 8.75, "y": 3},
+                {"label": "V", "matrix": [3, 8], "x": 9.75, "y": 3},
+                {"label": "B", "matrix": [3, 9], "x": 10.75, "y": 3},
+                {"label": "N", "matrix": [3, 10], "x": 11.75, "y": 3},
+                {"label": "M", "matrix": [3, 11], "x": 12.75, "y": 3},
+                {"label": ",", "matrix": [3, 12], "x": 13.75, "y": 3},
+                {"label": ".", "matrix": [3, 13], "x": 14.75, "y": 3},
+                {"label": "/", "matrix": [3, 14], "x": 15.75, "y": 3},
+                {"label": "Shift", "matrix": [3, 15], "x": 16.75, "y": 3, "w": 1.75},
+                {"label": "Fn", "matrix": [3, 16], "x": 18.5, "y": 3},
+
+                {"label": "0", "matrix": [4, 0], "x": 0, "y": 4},
+                {"label": "0", "matrix": [4, 1], "x": 1, "y": 4},
+                {"label": ".", "matrix": [4, 2], "x": 2, "y": 4},
+
+                {"label": "\u2190", "matrix": [4, 3], "x": 3.25, "y": 4.25},
+                {"label": "\u2193", "matrix": [4, 4], "x": 4.25, "y": 4.25},
+                {"label": "\u2192", "matrix": [4, 5], "x": 5.25, "y": 4.25},
+
+                {"label": "GUI", "matrix": [4, 6], "x": 6.5, "y": 4, "w": 1.5},
+                {"label": "Alt", "matrix": [4, 7], "x": 8, "y": 4, "w": 1.5},
+                {"label": "Space", "matrix": [4, 10], "x": 9.5, "y": 4, "w": 7},
+                {"label": "Alt", "matrix": [4, 15], "x": 16.5, "y": 4, "w": 1.5},
+                {"label": "Menu (Legacy)", "matrix": [4, 16], "x": 18, "y": 4, "w": 1.5}
+            ]
+        },
+        "LAYOUT_2u_bs": {
+            "layout": [
+                {"label": "Num Lock", "matrix": [0, 0], "x": 0, "y": 0},
+                {"label": "/", "matrix": [0, 1], "x": 1, "y": 0},
+                {"label": "*", "matrix": [0, 2], "x": 2, "y": 0},
+                {"label": "-", "matrix": [0, 3], "x": 3, "y": 0},
+
+                {"label": "Esc", "matrix": [0, 4], "x": 4.5, "y": 0},
+                {"label": "1", "matrix": [0, 5], "x": 5.5, "y": 0},
+                {"label": "2", "matrix": [0, 6], "x": 6.5, "y": 0},
+                {"label": "3", "matrix": [0, 7], "x": 7.5, "y": 0},
+                {"label": "4", "matrix": [0, 8], "x": 8.5, "y": 0},
+                {"label": "5", "matrix": [0, 9], "x": 9.5, "y": 0},
+                {"label": "6", "matrix": [0, 10], "x": 10.5, "y": 0},
+                {"label": "7", "matrix": [0, 11], "x": 11.5, "y": 0},
+                {"label": "8", "matrix": [0, 12], "x": 12.5, "y": 0},
+                {"label": "9", "matrix": [0, 13], "x": 13.5, "y": 0},
+                {"label": "0", "matrix": [0, 14], "x": 14.5, "y": 0},
+                {"label": "-", "matrix": [0, 15], "x": 15.5, "y": 0},
+                {"label": "=", "matrix": [0, 16], "x": 16.5, "y": 0},
+                {"label": "Backspace", "matrix": [0, 17], "x": 17.5, "y": 0, "w": 2},
+
+                {"label": "7", "matrix": [1, 0], "x": 0, "y": 1},
+                {"label": "8", "matrix": [1, 1], "x": 1, "y": 1},
+                {"label": "9", "matrix": [1, 2], "x": 2, "y": 1},
+                {"label": "+", "matrix": [1, 3], "x": 3, "y": 1},
+
+                {"label": "Tab", "matrix": [1, 4], "x": 4.5, "y": 1, "w": 1.5},
+                {"label": "Q", "matrix": [1, 5], "x": 6, "y": 1},
+                {"label": "W", "matrix": [1, 6], "x": 7, "y": 1},
+                {"label": "E", "matrix": [1, 7], "x": 8, "y": 1},
+                {"label": "R", "matrix": [1, 8], "x": 9, "y": 1},
+                {"label": "T", "matrix": [1, 9], "x": 10, "y": 1},
+                {"label": "Y", "matrix": [1, 10], "x": 11, "y": 1},
+                {"label": "U", "matrix": [1, 11], "x": 12, "y": 1},
+                {"label": "I", "matrix": [1, 12], "x": 13, "y": 1},
+                {"label": "O", "matrix": [1, 13], "x": 14, "y": 1},
+                {"label": "P", "matrix": [1, 14], "x": 15, "y": 1},
+                {"label": "[", "matrix": [1, 15], "x": 16, "y": 1},
+                {"label": "]", "matrix": [1, 16], "x": 17, "y": 1},
+                {"label": "\\", "matrix": [1, 17], "x": 18, "y": 1, "w": 1.5},
+
+                {"label": "4", "matrix": [2, 0], "x": 0, "y": 2},
+                {"label": "5", "matrix": [2, 1], "x": 1, "y": 2},
+                {"label": "6", "matrix": [2, 2], "x": 2, "y": 2},
+                {"label": "Enter", "matrix": [2, 3], "x": 3, "y": 2},
+
+                {"label": "Ctrl", "matrix": [2, 4], "x": 4.5, "y": 2, "w": 1.75},
+                {"label": "A", "matrix": [2, 5], "x": 6.25, "y": 2},
+                {"label": "S", "matrix": [2, 6], "x": 7.25, "y": 2},
+                {"label": "D", "matrix": [2, 7], "x": 8.25, "y": 2},
+                {"label": "F", "matrix": [2, 8], "x": 9.25, "y": 2},
+                {"label": "G", "matrix": [2, 9], "x": 10.25, "y": 2},
+                {"label": "H", "matrix": [2, 10], "x": 11.25, "y": 2},
+                {"label": "J", "matrix": [2, 11], "x": 12.25, "y": 2},
+                {"label": "K", "matrix": [2, 12], "x": 13.25, "y": 2},
+                {"label": "L", "matrix": [2, 13], "x": 14.25, "y": 2},
+                {"label": ";", "matrix": [2, 14], "x": 15.25, "y": 2},
+                {"label": "'", "matrix": [2, 15], "x": 16.25, "y": 2},
+                {"label": "Enter", "matrix": [2, 16], "x": 17.25, "y": 2, "w": 2.25},
+
+                {"label": "1", "matrix": [3, 0], "x": 0, "y": 3},
+                {"label": "2", "matrix": [3, 1], "x": 1, "y": 3},
+                {"label": "3", "matrix": [3, 2], "x": 2, "y": 3},
+                {"label": "Enter", "matrix": [4, 8], "x": 3, "y": 3},
+
+                {"label": "\u2191", "matrix": [3, 3], "x": 4.25, "y": 3.25},
+
+                {"label": "Shift", "matrix": [3, 4], "x": 5.5, "y": 3, "w": 1.25},
+                {"label": "Z", "matrix": [3, 5], "x": 6.75, "y": 3},
+                {"label": "X", "matrix": [3, 6], "x": 7.75, "y": 3},
+                {"label": "C", "matrix": [3, 7], "x": 8.75, "y": 3},
+                {"label": "V", "matrix": [3, 8], "x": 9.75, "y": 3},
+                {"label": "B", "matrix": [3, 9], "x": 10.75, "y": 3},
+                {"label": "N", "matrix": [3, 10], "x": 11.75, "y": 3},
+                {"label": "M", "matrix": [3, 11], "x": 12.75, "y": 3},
+                {"label": ",", "matrix": [3, 12], "x": 13.75, "y": 3},
+                {"label": ".", "matrix": [3, 13], "x": 14.75, "y": 3},
+                {"label": "/", "matrix": [3, 14], "x": 15.75, "y": 3},
+                {"label": "Shift", "matrix": [3, 15], "x": 16.75, "y": 3, "w": 1.75},
+                {"label": "Fn", "matrix": [3, 16], "x": 18.5, "y": 3},
+
+                {"label": "0", "matrix": [4, 0], "x": 0, "y": 4},
+                {"label": "0", "matrix": [4, 1], "x": 1, "y": 4},
+                {"label": ".", "matrix": [4, 2], "x": 2, "y": 4},
+
+                {"label": "\u2190", "matrix": [4, 3], "x": 3.25, "y": 4.25},
+                {"label": "\u2193", "matrix": [4, 4], "x": 4.25, "y": 4.25},
+                {"label": "\u2192", "matrix": [4, 5], "x": 5.25, "y": 4.25},
+
+                {"label": "GUI", "matrix": [4, 6], "x": 6.5, "y": 4, "w": 1.5},
+                {"label": "Alt", "matrix": [4, 7], "x": 8, "y": 4, "w": 1.5},
+                {"label": "Space", "matrix": [4, 10], "x": 9.5, "y": 4, "w": 7},
+                {"label": "Alt", "matrix": [4, 15], "x": 16.5, "y": 4, "w": 1.5},
+                {"label": "Menu (Legacy)", "matrix": [4, 16], "x": 18, "y": 4, "w": 1.5}
             ]
         }
     }
diff --git a/keyboards/mnk1800s/keymaps/default_2u_bs/keymap.c b/keyboards/mnk1800s/keymaps/default_2u_bs/keymap.c
new file mode 100644
index 0000000000..5e5466470f
--- /dev/null
+++ b/keyboards/mnk1800s/keymaps/default_2u_bs/keymap.c
@@ -0,0 +1,32 @@
+/* Copyright 2021 Yiancar-Designs
+ *
+ * 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_2u_bs( /* Base */
+    KC_NUM,  KC_PSLS, KC_PAST, KC_PMNS,          QK_GESC, KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSPC,
+    KC_P7,   KC_P8,   KC_P9,   KC_PPLS,          KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC, KC_BSLS,
+    KC_P4,   KC_P5,   KC_P6,   KC_PENT,          KC_LCTL, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_ENT,
+    KC_P1,   KC_P2,   KC_P3,   KC_PENT, KC_UP,            KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT, MO(1),
+    KC_P0,   KC_P0,   KC_PDOT, KC_LEFT, KC_DOWN, KC_RGHT,          KC_LGUI, KC_LALT,                   KC_SPC,                                      KC_RALT, KC_MENU),
+
+[1] = LAYOUT_2u_bs( /* FN */
+    _______, _______, _______, _______,          KC_GRV,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_DEL,
+    _______, _______, _______, _______,          KC_CAPS, _______, _______, _______, _______, _______, _______, _______, KC_PSCR, KC_SCRL, KC_PAUS, _______, _______, _______,
+    _______, _______, _______, _______,          _______, KC_VOLD, KC_VOLU, KC_MUTE, KC_EJCT, _______, _______, _______, KC_HOME, KC_PGUP, _______, _______, _______,
+    _______, _______, _______, _______, _______,          _______, _______, _______, _______, _______, _______, _______, _______, KC_END,  KC_PGDN, _______, _______, _______,
+    _______, _______, _______, _______, _______, _______,          _______, _______,                   _______,                                     _______, _______)
+};
diff --git a/keyboards/mnk1800s/matrix_diagram.md b/keyboards/mnk1800s/matrix_diagram.md
new file mode 100644
index 0000000000..ba2e2d751e
--- /dev/null
+++ b/keyboards/mnk1800s/matrix_diagram.md
@@ -0,0 +1,22 @@
+# Matrix Diagram for MNK1800s
+
+```
+                                                                                     ┌───────┐
+                                                                        2u Backspace │0H     │
+                                                                                     └───────┘
+               ┌───┬───┬───┬───┐ ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┐
+               │00 │01 │02 │03 │ │04 │05 │06 │07 │08 │09 │0A │0B │0C │0D │0E │0F │0G │0H │2H │
+               ├───┼───┼───┼───┤ ├───┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴───┤
+               │10 │11 │12 │13 │ │14   │15 │16 │17 │18 │19 │1A │1B │1C │1D │1E │1F │1G │1H   │
+       ┌───┐   ├───┼───┼───┼───┤ ├─────┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴┬──┴─────┤
+    2u │   │   │20 │21 │22 │23 │ │24    │25 │26 │27 │28 │29 │2A │2B │2C │2D │2E │2F │2G      │
+Numpad │23 │   ├───┼───┼───┼───┤ └───┬──┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴────┬───┤
+ Enter │   │   │30 │31 │32 │48 │┌───┐│34  │35 │36 │37 │38 │39 │3A │3B │3C │3D │3E │3F    │3G │
+       └───┘   ├───┼───┼───┼───┘│33 │└───┬┴───┴┬──┴──┬┴───┴───┴───┴───┴───┴───┴──┬┴────┬─┴───┤
+               │40 │41 │42 │┌───┼───┼───┐│46   │47   │4A                         │4F   │4G   │
+               └───┴───┴───┘│43 │44 │45 │└─────┴─────┴───────────────────────────┴─────┴─────┘
+                            └───┴───┴───┘
+               ┌───────┐
+               │40     │ 2u Numpad Zero
+               └───────┘
+```