diff --git a/keyboards/novelkeys/skelett40/keyboard.json b/keyboards/novelkeys/skelett40/keyboard.json
new file mode 100755
index 00000000000..c8810bc5511
--- /dev/null
+++ b/keyboards/novelkeys/skelett40/keyboard.json
@@ -0,0 +1,72 @@
+{
+ "manufacturer": "Yiancar-Designs",
+ "keyboard_name": "Skelett 40",
+ "maintainer": "Yiancar-Designs",
+ "bootloader": "stm32-dfu",
+ "diode_direction": "COL2ROW",
+ "features": {
+ "bootmagic": true,
+ "extrakey": true,
+ "mousekey": true,
+ "nkro": true
+ },
+ "matrix_pins": {
+ "cols": ["A1", "B1", "B0", "A7", "A6", "A5", "A4", "A3", "B2", "B10", "B11", "B12"],
+ "rows": ["A2", "B9", "B8", "B5"]
+ },
+ "processor": "STM32F072",
+ "url": "https://yiancar-designs.com",
+ "usb": {
+ "device_version": "0.0.1",
+ "pid": "0x7337",
+ "vid": "0x8968"
+ },
+ "layouts": {
+ "LAYOUT": {
+ "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, "y": 0},
+ {"matrix": [0, 5], "x": 5, "y": 0},
+ {"matrix": [0, 6], "x": 6, "y": 0},
+ {"matrix": [0, 7], "x": 7, "y": 0},
+ {"matrix": [0, 8], "x": 8, "y": 0},
+ {"matrix": [0, 9], "x": 9, "y": 0},
+ {"matrix": [0, 10], "x": 10, "y": 0},
+ {"matrix": [0, 11], "x": 11, "y": 0},
+ {"matrix": [1, 0], "x": 0, "y": 1, "w": 1.25},
+ {"matrix": [1, 1], "x": 1.25, "y": 1},
+ {"matrix": [1, 2], "x": 2.25, "y": 1},
+ {"matrix": [1, 3], "x": 3.25, "y": 1},
+ {"matrix": [1, 4], "x": 4.25, "y": 1},
+ {"matrix": [1, 5], "x": 5.25, "y": 1},
+ {"matrix": [1, 6], "x": 6.25, "y": 1},
+ {"matrix": [1, 7], "x": 7.25, "y": 1},
+ {"matrix": [1, 8], "x": 8.25, "y": 1},
+ {"matrix": [1, 9], "x": 9.25, "y": 1},
+ {"matrix": [1, 11], "x": 10.25, "y": 1, "w": 1.75},
+ {"matrix": [2, 0], "x": 0, "y": 2, "w": 1.75},
+ {"matrix": [2, 1], "x": 1.75, "y": 2},
+ {"matrix": [2, 2], "x": 2.75, "y": 2},
+ {"matrix": [2, 3], "x": 3.75, "y": 2},
+ {"matrix": [2, 4], "x": 4.75, "y": 2},
+ {"matrix": [2, 5], "x": 5.75, "y": 2},
+ {"matrix": [2, 6], "x": 6.75, "y": 2},
+ {"matrix": [2, 7], "x": 7.75, "y": 2},
+ {"matrix": [2, 8], "x": 8.75, "y": 2},
+ {"matrix": [2, 9], "x": 9.75, "y": 2, "w": 1.25},
+ {"matrix": [2, 11], "x": 11, "y": 2},
+ {"matrix": [3, 0], "x": 0, "y": 3, "w": 1.25},
+ {"matrix": [3, 1], "x": 1.25, "y": 3},
+ {"matrix": [3, 2], "x": 2.25, "y": 3, "w": 1.25},
+ {"matrix": [3, 3], "x": 3.5, "y": 3, "w": 2.25},
+ {"matrix": [3, 6], "x": 5.75, "y": 3, "w": 2.75},
+ {"matrix": [3, 9], "x": 8.5, "y": 3, "w": 1.25},
+ {"matrix": [3, 10], "x": 9.75, "y": 3},
+ {"matrix": [3, 11], "x": 10.75, "y": 3, "w": 1.25}
+ ]
+ }
+ }
+}
diff --git a/keyboards/novelkeys/skelett40/keymaps/default/keymap.c b/keyboards/novelkeys/skelett40/keymaps/default/keymap.c
new file mode 100644
index 00000000000..8bbb00ae6a7
--- /dev/null
+++ b/keyboards/novelkeys/skelett40/keymaps/default/keymap.c
@@ -0,0 +1,36 @@
+/* Copyright 2024 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 .
+ */
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+[0] = LAYOUT( /* Base */
+ QK_GESC, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_BSPC,
+ KC_TAB, KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_ENT,
+ KC_LSFT, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH,
+ KC_LCTL, KC_LGUI, KC_LALT, KC_SPC, MO(1), MO(2), KC_APP, KC_RCTL),
+
+[1] = LAYOUT( /* FN1 */
+ 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_LBRC, KC_RBRC, _______, _______, _______, _______, KC_MINS, KC_EQL, KC_SCLN, KC_QUOT,
+ _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_BSLS,
+ _______, _______, _______, _______, _______, _______, _______, _______),
+
+[2] = LAYOUT( /* FN2 */
+ 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_LEFT, KC_DOWN, KC_UP, KC_RGHT, _______,
+ _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+ KC_VOLU, KC_VOLD, KC_MUTE, _______, _______, _______, _______, _______)
+};
diff --git a/keyboards/novelkeys/skelett40/keymaps/via/keymap.c b/keyboards/novelkeys/skelett40/keymaps/via/keymap.c
new file mode 100644
index 00000000000..8bbb00ae6a7
--- /dev/null
+++ b/keyboards/novelkeys/skelett40/keymaps/via/keymap.c
@@ -0,0 +1,36 @@
+/* Copyright 2024 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 .
+ */
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+[0] = LAYOUT( /* Base */
+ QK_GESC, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_BSPC,
+ KC_TAB, KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_ENT,
+ KC_LSFT, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH,
+ KC_LCTL, KC_LGUI, KC_LALT, KC_SPC, MO(1), MO(2), KC_APP, KC_RCTL),
+
+[1] = LAYOUT( /* FN1 */
+ 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_LBRC, KC_RBRC, _______, _______, _______, _______, KC_MINS, KC_EQL, KC_SCLN, KC_QUOT,
+ _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_BSLS,
+ _______, _______, _______, _______, _______, _______, _______, _______),
+
+[2] = LAYOUT( /* FN2 */
+ 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_LEFT, KC_DOWN, KC_UP, KC_RGHT, _______,
+ _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+ KC_VOLU, KC_VOLD, KC_MUTE, _______, _______, _______, _______, _______)
+};
diff --git a/keyboards/novelkeys/skelett40/keymaps/via/rules.mk b/keyboards/novelkeys/skelett40/keymaps/via/rules.mk
new file mode 100755
index 00000000000..1e5b99807cb
--- /dev/null
+++ b/keyboards/novelkeys/skelett40/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
diff --git a/keyboards/novelkeys/skelett40/readme.md b/keyboards/novelkeys/skelett40/readme.md
new file mode 100755
index 00000000000..baa70096161
--- /dev/null
+++ b/keyboards/novelkeys/skelett40/readme.md
@@ -0,0 +1,36 @@
+# Skelett 40
+
+This is a standard 40% layout PCB. It supports VIA.
+
+* Keyboard Maintainer: [Yiancar](http://yiancar-designs.com/) and on [GitHub](https://github.com/yiancar)
+* Hardware Supported: A 40% keyboard with STM32F072CB
+* Hardware Availability: https://novelkeys.com/
+
+## Instructions
+
+### Build
+
+Make example for this keyboard (after setting up your build environment):
+
+ make novelkeys/skelett40:default
+
+Flashing example for this keyboard:
+
+ make novelkeys/skelett40:default:flash
+
+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).
+
+### Reset
+
+- Unplug
+- Hold Escape
+- Plug In
+- Unplug
+- Release Escape
+
+### Flash
+
+- Unplug
+- Hold Escape
+- Plug In
+- Flash using QMK Toolbox or CLI (`make novelkeys/skelett40::flash`)
diff --git a/keyboards/novelkeys/skelett40/rules.mk b/keyboards/novelkeys/skelett40/rules.mk
new file mode 100644
index 00000000000..0ab54aaaf71
--- /dev/null
+++ b/keyboards/novelkeys/skelett40/rules.mk
@@ -0,0 +1,2 @@
+# Wildcard to allow APM32 MCU
+DFU_SUFFIX_ARGS = -v FFFF -p FFFF
diff --git a/keyboards/novelkeys/skelett40/skelett40.c b/keyboards/novelkeys/skelett40/skelett40.c
new file mode 100755
index 00000000000..be62d034398
--- /dev/null
+++ b/keyboards/novelkeys/skelett40/skelett40.c
@@ -0,0 +1,26 @@
+/* Copyright 2024 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 .
+ */
+#include "quantum.h"
+
+void led_init_ports(void) {
+ // Set our LED pins as open drain outputs
+ gpio_set_pin_output_open_drain(B6);
+}
+
+layer_state_t layer_state_set_kb(layer_state_t state) {
+ gpio_write_pin(B6, !layer_state_cmp(state, 1));
+ return layer_state_set_user(state);
+}