diff --git a/keyboards/yandrstudio/keit75/board.h b/keyboards/yandrstudio/keit75/board.h
new file mode 100644
index 00000000000..33fc4f710b0
--- /dev/null
+++ b/keyboards/yandrstudio/keit75/board.h
@@ -0,0 +1,9 @@
+// Copyright 2022 Y&R-Biu (@jiaxin96)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include_next <board.h>
+
+#undef STM32_HSECLK
+#define STM32_HSECLK 16000000
diff --git a/keyboards/yandrstudio/keit75/config.h b/keyboards/yandrstudio/keit75/config.h
new file mode 100644
index 00000000000..453bb23375c
--- /dev/null
+++ b/keyboards/yandrstudio/keit75/config.h
@@ -0,0 +1,21 @@
+// Copyright 2022 Y&R-Biu (@jiaxin96)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#ifdef RGBLIGHT_ENABLE
+
+#    define RGBLIGHT_LIMIT_VAL 180
+#    define RGBLIGHT_DEFAULT_MODE RGBLIGHT_MODE_RAINBOW_MOOD
+
+#    define RGBLIGHT_LAYERS
+#    define RGBLIGHT_LAYERS_OVERRIDE_RGB_OFF
+#    define RGBLIGHT_LAYERS_RETAIN_VAL
+
+#   define WS2812_PWM_DRIVER PWMD3
+#   define WS2812_PWM_CHANNEL 2
+#   define WS2812_PWM_PAL_MODE 2
+#   define WS2812_DMA_STREAM STM32_DMA1_STREAM3
+#   define WS2812_DMA_CHANNEL 3
+
+#endif
diff --git a/keyboards/yandrstudio/keit75/halconf.h b/keyboards/yandrstudio/keit75/halconf.h
new file mode 100644
index 00000000000..6be58c49181
--- /dev/null
+++ b/keyboards/yandrstudio/keit75/halconf.h
@@ -0,0 +1,8 @@
+// Copyright 2022 Y&R-Biu (@jiaxin96)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+#include_next <halconf.h>
+
+#undef HAL_USE_PWM
+#define HAL_USE_PWM    TRUE
diff --git a/keyboards/yandrstudio/keit75/info.json b/keyboards/yandrstudio/keit75/info.json
new file mode 100644
index 00000000000..6c4d87ee36a
--- /dev/null
+++ b/keyboards/yandrstudio/keit75/info.json
@@ -0,0 +1,43 @@
+{
+    "keyboard_name": "keit75",
+    "processor": "STM32F103",
+    "bootloader": "stm32duino",
+    "usb": {
+        "pid": "0xAA69",
+        "device_version": "1.0.0"
+    },
+    "features": {
+        "bootmagic": true,
+        "mousekey": true,
+        "extrakey": true,
+        "nkro": true,
+        "rgblight": true
+    },
+    "diode_direction": "COL2ROW",
+    "matrix_pins": {
+        "cols": ["A4", "B10", "B13", "B14", "B15", "A8", "A9", "A10", "B4", "B5", "B6", "B7", "C13", "C14", "C15"],
+        "rows": ["B2", "B1", "B0", "A6", "A5", "B11"]
+    },
+    "rgblight": {
+        "led_count": 4,
+        "pin": "A7",
+        "sleep": true,
+        "animations": {
+            "breathing": true,
+            "rainbow_mood": true,
+            "rainbow_swirl": true,
+            "snake": true,
+            "knight": true,
+            "christmas": true,
+            "static_gradient": true,
+            "rgb_test": true,
+            "alternating": true,
+            "twinkle": true
+        }
+      },
+    "layouts": {
+        "LAYOUT": {
+            "layout": [{"label":"0,0", "x":0, "y":0}, {"label":"0,1", "x":1.25, "y":0}, {"label":"0,2", "x":2.25, "y":0}, {"label":"0,3", "x":3.25, "y":0}, {"label":"0,4", "x":4.25, "y":0}, {"label":"0,5", "x":5.5, "y":0}, {"label":"0,6", "x":6.5, "y":0}, {"label":"0,7", "x":7.5, "y":0}, {"label":"0,8", "x":8.5, "y":0}, {"label":"0,9", "x":9.75, "y":0}, {"label":"0,10", "x":10.75, "y":0}, {"label":"0,11", "x":11.75, "y":0}, {"label":"0,12", "x":12.75, "y":0}, {"label":"0,13", "x":14, "y":0}, {"label":"1,0", "x":0, "y":1.5}, {"label":"1,1", "x":1, "y":1.5}, {"label":"1,2", "x":2, "y":1.5}, {"label":"1,3", "x":3, "y":1.5}, {"label":"1,4", "x":4, "y":1.5}, {"label":"1,5", "x":5, "y":1.5}, {"label":"1,6", "x":6, "y":1.5}, {"label":"1,7", "x":7, "y":1.5}, {"label":"1,8", "x":8, "y":1.5}, {"label":"1,9", "x":9, "y":1.5}, {"label":"1,10", "x":10, "y":1.5}, {"label":"1,11", "x":11, "y":1.5}, {"label":"1,12", "x":12, "y":1.5}, {"label":"1,13", "x":13, "y":1.5, "w":2}, {"label":"1,14", "x":15.5, "y":1.5}, {"label":"2,0", "x":0, "y":2.5, "w":1.5}, {"label":"2,1", "x":1.5, "y":2.5}, {"label":"2,2", "x":2.5, "y":2.5}, {"label":"2,3", "x":3.5, "y":2.5}, {"label":"2,4", "x":4.5, "y":2.5}, {"label":"2,5", "x":5.5, "y":2.5}, {"label":"2,6", "x":6.5, "y":2.5}, {"label":"2,7", "x":7.5, "y":2.5}, {"label":"2,8", "x":8.5, "y":2.5}, {"label":"2,9", "x":9.5, "y":2.5}, {"label":"2,10", "x":10.5, "y":2.5}, {"label":"2,11", "x":11.5, "y":2.5}, {"label":"2,12", "x":12.5, "y":2.5}, {"label":"2,13", "x":13.5, "y":2.5, "w":1.5}, {"label":"2,14", "x":15.5, "y":2.5}, {"label":"3,0", "x":0, "y":3.5, "w":1.75}, {"label":"3,1", "x":1.75, "y":3.5}, {"label":"3,2", "x":2.75, "y":3.5}, {"label":"3,3", "x":3.75, "y":3.5}, {"label":"3,4", "x":4.75, "y":3.5}, {"label":"3,5", "x":5.75, "y":3.5}, {"label":"3,6", "x":6.75, "y":3.5}, {"label":"3,7", "x":7.75, "y":3.5}, {"label":"3,8", "x":8.75, "y":3.5}, {"label":"3,9", "x":9.75, "y":3.5}, {"label":"3,10", "x":10.75, "y":3.5}, {"label":"3,11", "x":11.75, "y":3.5}, {"label":"3,13", "x":12.75, "y":3.5, "w":2.25}, {"label":"3,14", "x":15.5, "y":3.5}, {"label":"4,0", "x":0, "y":4.5, "w":2.25}, {"label":"4,1", "x":2.25, "y":4.5}, {"label":"4,2", "x":3.25, "y":4.5}, {"label":"4,3", "x":4.25, "y":4.5}, {"label":"4,4", "x":5.25, "y":4.5}, {"label":"4,5", "x":6.25, "y":4.5}, {"label":"4,6", "x":7.25, "y":4.5}, {"label":"4,7", "x":8.25, "y":4.5}, {"label":"4,8", "x":9.25, "y":4.5}, {"label":"4,9", "x":10.25, "y":4.5}, {"label":"4,10", "x":11.25, "y":4.5}, {"label":"4,11", "x":12.25, "y":4.5, "w":1.75}, {"label":"4,14", "x":15.5, "y":4.5}, {"label":"4,13", "x":14.25, "y":4.75}, {"label":"5,0", "x":0, "y":5.5, "w":1.25}, {"label":"5,1", "x":1.25, "y":5.5, "w":1.25}, {"label":"5,2", "x":2.5, "y":5.5, "w":1.25}, {"label":"5,3", "x":3.75, "y":5.5, "w":6.25}, {"label":"5,4", "x":10, "y":5.5, "w":1.5}, {"label":"5,5", "x":11.5, "y":5.5, "w":1.5}, {"label":"5,6", "x":13.25, "y":5.75}, {"label":"5,13", "x":14.25, "y":5.75}, {"label":"5,14", "x":15.25, "y":5.75}]
+        }
+    }
+}
diff --git a/keyboards/yandrstudio/keit75/keit75.c b/keyboards/yandrstudio/keit75/keit75.c
new file mode 100644
index 00000000000..e3325109ecd
--- /dev/null
+++ b/keyboards/yandrstudio/keit75/keit75.c
@@ -0,0 +1,61 @@
+// Copyright 2022 Y&R-Biu (@jiaxin96)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "keit75.h"
+
+#ifdef RGBLIGHT_ENABLE
+
+const rgblight_segment_t PROGMEM my_capslock_layer[] = RGBLIGHT_LAYER_SEGMENTS(
+    {0, 4, HSV_RED}
+);
+
+const rgblight_segment_t* const PROGMEM my_rgb_layers[] = RGBLIGHT_LAYERS_LIST(
+    my_capslock_layer
+);
+
+void keyboard_post_init_kb(void) {
+    rgblight_layers = my_rgb_layers;
+}
+
+bool led_update_kb(led_t led_state) {
+    if (led_update_user(led_state)) {
+        rgblight_set_layer_state(0, led_state.caps_lock);
+    }
+    return true;
+}
+#endif
+
+bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
+    if (!process_record_user(keycode, record)) {
+        return false;
+    }
+    switch (keycode) {
+        case KC_LG:
+            if (record->event.pressed) {
+                process_magic(GUI_TOG, record);
+            }
+            return false;
+        case KC_MACOS:
+            if (record->event.pressed) {
+                process_magic(CG_TOGG, record);
+            }
+            return false;
+        case KC_MCTL:
+            if (record->event.pressed) {
+                host_consumer_send(0x29F);
+            } else {
+                host_consumer_send(0);
+            }
+            return false;
+        case KC_LPAD:
+            if (record->event.pressed) {
+                host_consumer_send(0x2A0);
+            } else {
+                host_consumer_send(0);
+            }
+            return false;
+        default:
+            return true;
+    }
+    return true;
+}
diff --git a/keyboards/yandrstudio/keit75/keit75.h b/keyboards/yandrstudio/keit75/keit75.h
new file mode 100644
index 00000000000..7bcad425254
--- /dev/null
+++ b/keyboards/yandrstudio/keit75/keit75.h
@@ -0,0 +1,33 @@
+// Copyright 2022 Y&R-Biu (@jiaxin96)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+#include "quantum.h"
+
+#define LAYOUT( \
+    K000, K001, K002, K003, K004, K005, K006, K007, K008, K009, K010, K011, K012, K013,       \
+    K100, K101, K102, K103, K104, K105, K106, K107, K108, K109, K110, K111, K112, K113, K114, \
+    K200, K201, K202, K203, K204, K205, K206, K207, K208, K209, K210, K211, K212, K213, K214, \
+    K300, K301, K302, K303, K304, K305, K306, K307, K308, K309, K310, K311,       K313, K314, \
+    K400, K401, K402, K403, K404, K405, K406, K407, K408, K409, K410, K411,       K413, K414, \
+    K500, K501, K502, K503, K504, K505, K506,                                     K513, K514  \
+) { \
+    { K000,  K001,  K002,  K003,  K004,  K005,  K006,  K007,  K008,  K009,  K010,  K011,  K012,   K013, KC_NO }, \
+    { K100,  K101,  K102,  K103,  K104,  K105,  K106,  K107,  K108,  K109,  K110,  K111,  K112,   K113,  K114 }, \
+    { K200,  K201,  K202,  K203,  K204,  K205,  K206,  K207,  K208,  K209,  K210,  K211,  K212,   K213,  K214 }, \
+    { K300,  K301,  K302,  K303,  K304,  K305,  K306,  K307,  K308,  K309,  K310,  K311,  KC_NO,  K313,  K314 }, \
+    { K400,  K401,  K402,  K403,  K404,  K405,  K406,  K407,  K408,  K409,  K410,  K411,  KC_NO,  K413,  K414 }, \
+    { K500,  K501,  K502,  K503,  K504,  K505,  K506,  KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO,  K513,  K514 }  \
+}
+
+enum keyboard_keycodes {
+    LOCK_GUI = QK_KB,
+    TOG_MACOS_KEYMAP,
+    KC_MISSION_CONTROL,
+    KC_LAUNCHPAD,
+};
+
+#define KC_LG     LOCK_GUI
+#define KC_MACOS  TOG_MACOS_KEYMAP
+#define KC_MCTL   KC_MISSION_CONTROL
+#define KC_LPAD   KC_LAUNCHPAD
diff --git a/keyboards/yandrstudio/keit75/keymaps/default/keymap.c b/keyboards/yandrstudio/keit75/keymaps/default/keymap.c
new file mode 100644
index 00000000000..5f404880f7d
--- /dev/null
+++ b/keyboards/yandrstudio/keit75/keymaps/default/keymap.c
@@ -0,0 +1,21 @@
+// Copyright 2022 Y&R-Biu (@jiaxin96)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT(
+        KC_ESC,  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_HOME,
+        KC_GRV,  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_PGUP,
+        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_PGDN,
+        KC_CAPS, 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_DEL,
+        KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,   KC_N,    KC_M,    KC_COMM,   KC_DOT,  KC_SLSH, KC_RSFT,          KC_UP,   KC_INS,
+        KC_LCTL, KC_LGUI, KC_LALT, KC_SPC,  KC_RALT, MO(1),  KC_LEFT,                                                         KC_DOWN, KC_RGHT),
+    [1] = LAYOUT(
+        KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS,  RGB_HUI, RGB_HUD, RGB_SAI, RGB_SAD, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS,
+        KC_TRNS, RGB_TOG,  RGB_MOD, RGB_RMOD,RGB_VAI, RGB_VAD, KC_TRNS, KC_MACOS,KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS,
+        KC_TRNS, LOCK_GUI, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                                                       KC_TRNS, KC_TRNS)
+};
diff --git a/keyboards/yandrstudio/keit75/keymaps/via/keymap.c b/keyboards/yandrstudio/keit75/keymaps/via/keymap.c
new file mode 100644
index 00000000000..384843eed87
--- /dev/null
+++ b/keyboards/yandrstudio/keit75/keymaps/via/keymap.c
@@ -0,0 +1,35 @@
+// Copyright 2022 Y&R-Biu (@jiaxin96)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT(
+        KC_ESC,  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_HOME,
+        KC_GRV,  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_PGUP,
+        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_PGDN,
+        KC_CAPS, 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_DEL,
+        KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,   KC_N,    KC_M,    KC_COMM,   KC_DOT,  KC_SLSH, KC_RSFT,          KC_UP,   KC_INS,
+        KC_LCTL, KC_LGUI, KC_LALT, KC_SPC,  KC_RALT, MO(1),  KC_LEFT,                                                         KC_DOWN, KC_RGHT),
+    [1] = LAYOUT(
+        KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS,  RGB_HUI, RGB_HUD, RGB_SAI, RGB_SAD, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS,
+        KC_TRNS, RGB_TOG,  RGB_MOD, RGB_RMOD,RGB_VAI, RGB_VAD, KC_TRNS, KC_MACOS,KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS,
+        KC_TRNS, LOCK_GUI, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                                                       KC_TRNS, KC_TRNS),
+    [2] = LAYOUT(
+        KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                                                       KC_TRNS, KC_TRNS),
+    [3] = LAYOUT(
+        KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                                                       KC_TRNS, KC_TRNS)
+};
diff --git a/keyboards/yandrstudio/keit75/keymaps/via/rules.mk b/keyboards/yandrstudio/keit75/keymaps/via/rules.mk
new file mode 100644
index 00000000000..1e5b99807cb
--- /dev/null
+++ b/keyboards/yandrstudio/keit75/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
diff --git a/keyboards/yandrstudio/keit75/mcuconf.h b/keyboards/yandrstudio/keit75/mcuconf.h
new file mode 100644
index 00000000000..897cdc89ba9
--- /dev/null
+++ b/keyboards/yandrstudio/keit75/mcuconf.h
@@ -0,0 +1,12 @@
+// Copyright 2022 Y&R-Biu (@jiaxin96)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include_next <mcuconf.h>
+
+#undef STM32_PWM_USE_TIM3
+#define STM32_PWM_USE_TIM3 TRUE
+
+#undef STM32_PLLXTPRE
+#define STM32_PLLXTPRE STM32_PLLXTPRE_DIV2
diff --git a/keyboards/yandrstudio/keit75/readme.md b/keyboards/yandrstudio/keit75/readme.md
new file mode 100644
index 00000000000..ff61d1c7ce8
--- /dev/null
+++ b/keyboards/yandrstudio/keit75/readme.md
@@ -0,0 +1,26 @@
+# keit75
+
+![keit75](https://i.imgur.com/LzCxxnZh.png)
+A 75% keyboard.
+This keyboard use 16mhz HSE and APM32F103 as MCU.
+
+- Keyboard Maintainer: https://github.com/jiaxin96
+- Hardware Supported: keit75
+- Hardware Availability: https://github.com/Oh-My-Mechanical-Keyboard
+
+Make example for this keyboard (after setting up your build environment):
+
+    make yandrstudio/keit75:default
+
+Flashing example for this keyboard:
+
+    make yandrstudio/keit75:default:flash
+
+See [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) then the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information.
+
+## Bootloader
+
+Enter the bootloader in 2 ways:
+
+- **Bootmagic reset**: Hold down the key at (0,0) in the matrix (usually the top left key which is Escape in this keyboard) and plug in the keyboard
+- **Keycode in layout**: Press the key mapped to `QK_BOOT` if it is available.
diff --git a/keyboards/yandrstudio/keit75/rules.mk b/keyboards/yandrstudio/keit75/rules.mk
new file mode 100644
index 00000000000..0d4f6ac275e
--- /dev/null
+++ b/keyboards/yandrstudio/keit75/rules.mk
@@ -0,0 +1,3 @@
+# Build Options
+#   change yes to no to disable
+WS2812_DRIVER = pwm