diff --git a/keyboards/pablojimenezmateo/classic48/config.h b/keyboards/pablojimenezmateo/classic48/config.h
new file mode 100644
index 00000000000..8716f34b750
--- /dev/null
+++ b/keyboards/pablojimenezmateo/classic48/config.h
@@ -0,0 +1,23 @@
+/* Copyright 2025 Pablo Jiménez Mateo (@pablojimenezmateo)
+ *
+ * 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 .
+ */
+#pragma once
+
+#define EE_HANDS
+
+#define MK_KINETIC_SPEED
+#define MOUSEKEY_INITIAL_SPEED 200
+#define MOUSEKEY_WHEEL_INITIAL_MOVEMENTS 2
+#define MOUSEKEY_WHEEL_BASE_MOVEMENTS 16
diff --git a/keyboards/pablojimenezmateo/classic48/keyboard.json b/keyboards/pablojimenezmateo/classic48/keyboard.json
new file mode 100644
index 00000000000..f315056d0ba
--- /dev/null
+++ b/keyboards/pablojimenezmateo/classic48/keyboard.json
@@ -0,0 +1,167 @@
+{
+ "manufacturer": "Pablo Jiménez Mateo",
+ "keyboard_name": "classic48",
+ "maintainer": "pablojimenezmateo",
+ "development_board": "promicro_rp2040",
+ "diode_direction": "COL2ROW",
+ "features": {
+ "bootmagic": true,
+ "extrakey": true,
+ "mousekey": true,
+ "rgb_matrix": true
+ },
+ "matrix_pins": {
+ "cols": ["GP23", "GP21", "GP16", "GP15", "GP14", "GP13"],
+ "rows": ["GP27", "GP26", "GP22", "GP20"]
+ },
+ "url": "https://github.com/pablojimenezmateo/classic48",
+ "usb": {
+ "device_version": "1.0.0",
+ "pid": "0x0000",
+ "vid": "0xFEED"
+ },
+ "split": {
+ "enabled": true,
+ "serial": {
+ "driver": "vendor",
+ "pin": "GP28"
+ },
+ "transport":{
+ "sync": {
+ "layer_state": true
+ }
+ }
+ },
+ "ws2812": {
+ "pin": "GP29",
+ "driver": "vendor"
+ },
+ "rgb_matrix": {
+ "default": {
+ "hue": 180,
+ "sat": 100,
+ "val": 60
+ },
+ "driver": "ws2812",
+ "layout": [
+ {"flags": 4, "matrix": [0, 0], "x": 0, "y": 0},
+ {"flags": 4, "matrix": [0, 1], "x": 20, "y": 0},
+ {"flags": 4, "matrix": [0, 2], "x": 40, "y": 0},
+ {"flags": 4, "matrix": [0, 3], "x": 60, "y": 0},
+ {"flags": 4, "matrix": [0, 4], "x": 80, "y": 0},
+ {"flags": 4, "matrix": [0, 5], "x": 100, "y": 0},
+
+
+ {"flags": 4, "matrix": [4, 0], "x": 240, "y": 0},
+ {"flags": 4, "matrix": [4, 1], "x": 220, "y": 0},
+ {"flags": 4, "matrix": [4, 2], "x": 200, "y": 0},
+ {"flags": 4, "matrix": [4, 3], "x": 180, "y": 0},
+ {"flags": 4, "matrix": [4, 4], "x": 160, "y": 0},
+ {"flags": 4, "matrix": [4, 5], "x": 140, "y": 0},
+
+ {"flags": 4, "matrix": [1, 0], "x": 0, "y": 20},
+ {"flags": 4, "matrix": [1, 1], "x": 20, "y": 20},
+ {"flags": 4, "matrix": [1, 2], "x": 40, "y": 20},
+ {"flags": 4, "matrix": [1, 3], "x": 60, "y": 20},
+ {"flags": 4, "matrix": [1, 4], "x": 80, "y": 20},
+ {"flags": 4, "matrix": [1, 5], "x": 100, "y": 20},
+
+ {"flags": 4, "matrix": [5, 0], "x": 240, "y": 20},
+ {"flags": 4, "matrix": [5, 1], "x": 220, "y": 20},
+ {"flags": 4, "matrix": [5, 2], "x": 200, "y": 20},
+ {"flags": 4, "matrix": [5, 3], "x": 180, "y": 20},
+ {"flags": 4, "matrix": [5, 4], "x": 160, "y": 20},
+ {"flags": 4, "matrix": [5, 5], "x": 140, "y": 20},
+
+ {"flags": 4, "matrix": [2, 0], "x": 0, "y": 40},
+ {"flags": 4, "matrix": [2, 1], "x": 20, "y": 40},
+ {"flags": 4, "matrix": [2, 2], "x": 40, "y": 40},
+ {"flags": 4, "matrix": [2, 3], "x": 60, "y": 40},
+ {"flags": 4, "matrix": [2, 4], "x": 80, "y": 40},
+ {"flags": 4, "matrix": [2, 5], "x": 100, "y": 40},
+
+ {"flags": 4, "matrix": [6, 0], "x": 240, "y": 40},
+ {"flags": 4, "matrix": [6, 1], "x": 220, "y": 40},
+ {"flags": 4, "matrix": [6, 2], "x": 200, "y": 40},
+ {"flags": 4, "matrix": [6, 3], "x": 180, "y": 40},
+ {"flags": 4, "matrix": [6, 4], "x": 160, "y": 40},
+ {"flags": 4, "matrix": [6, 5], "x": 140, "y": 40},
+
+ {"flags": 4, "matrix": [3, 0], "x": 0, "y": 60},
+ {"flags": 4, "matrix": [3, 1], "x": 20, "y": 60},
+ {"flags": 4, "matrix": [3, 2], "x": 40, "y": 60},
+ {"flags": 4, "matrix": [3, 3], "x": 60, "y": 60},
+ {"flags": 4, "matrix": [3, 4], "x": 80, "y": 60},
+ {"flags": 4, "matrix": [3, 5], "x": 100, "y": 60},
+
+ {"flags": 4, "matrix": [7, 0], "x": 240, "y": 60},
+ {"flags": 4, "matrix": [7, 1], "x": 220, "y": 60},
+ {"flags": 4, "matrix": [7, 2], "x": 200, "y": 60},
+ {"flags": 4, "matrix": [7, 3], "x": 180, "y": 60},
+ {"flags": 4, "matrix": [7, 4], "x": 160, "y": 60},
+ {"flags": 4, "matrix": [7, 5], "x": 140, "y": 60}
+ ],
+ "max_brightness": 200
+ },
+ "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": [4, 5], "x": 7, "y": 0},
+ {"matrix": [4, 4], "x": 8, "y": 0},
+ {"matrix": [4, 3], "x": 9, "y": 0},
+ {"matrix": [4, 2], "x": 10, "y": 0},
+ {"matrix": [4, 1], "x": 11, "y": 0},
+ {"matrix": [4, 0], "x": 12, "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, "y": 1},
+ {"matrix": [1, 5], "x": 5, "y": 1},
+
+ {"matrix": [5, 5], "x": 7, "y": 1},
+ {"matrix": [5, 4], "x": 8, "y": 1},
+ {"matrix": [5, 3], "x": 9, "y": 1},
+ {"matrix": [5, 2], "x": 10, "y": 1},
+ {"matrix": [5, 1], "x": 11, "y": 1},
+ {"matrix": [5, 0], "x": 12, "y": 1},
+
+ {"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, "y": 2},
+ {"matrix": [2, 5], "x": 5, "y": 2},
+
+ {"matrix": [6, 5], "x": 7, "y": 2},
+ {"matrix": [6, 4], "x": 8, "y": 2},
+ {"matrix": [6, 3], "x": 9, "y": 2},
+ {"matrix": [6, 2], "x": 10, "y": 2},
+ {"matrix": [6, 1], "x": 11, "y": 2},
+ {"matrix": [6, 0], "x": 12, "y": 2},
+
+ {"matrix": [3, 0], "x": 0, "y": 3},
+ {"matrix": [3, 1], "x": 1, "y": 3},
+ {"matrix": [3, 2], "x": 2, "y": 3},
+ {"matrix": [3, 3], "x": 3, "y": 3},
+ {"matrix": [3, 4], "x": 4, "y": 3},
+ {"matrix": [3, 5], "x": 5, "y": 3},
+
+ {"matrix": [7, 5], "x": 7, "y": 3},
+ {"matrix": [7, 4], "x": 8, "y": 3},
+ {"matrix": [7, 3], "x": 9, "y": 3},
+ {"matrix": [7, 2], "x": 10, "y": 3},
+ {"matrix": [7, 1], "x": 11, "y": 3},
+ {"matrix": [7, 0], "x": 12, "y": 3}
+ ]
+ }
+ }
+}
diff --git a/keyboards/pablojimenezmateo/classic48/keymaps/default/keymap.c b/keyboards/pablojimenezmateo/classic48/keymaps/default/keymap.c
new file mode 100644
index 00000000000..20dbf6269ee
--- /dev/null
+++ b/keyboards/pablojimenezmateo/classic48/keymaps/default/keymap.c
@@ -0,0 +1,72 @@
+/* Copyright 2025 Pablo Jiménez Mateo (@pablojimenezmateo)
+ *
+ * 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
+
+enum layer_names {
+ _MAIN,
+ _NUMBERS,
+ _SYMBOLS,
+ _NAVIGATION
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+ [_MAIN] = LAYOUT(
+ KC_NO, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_NO,
+ KC_TAB, KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN, KC_QUOT,
+ KC_ESCAPE, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH, KC_NO,
+ LCTL(KC_X), LCTL(KC_C), LCTL(KC_V), KC_NO, MO(_NUMBERS), LT(3, KC_SPC), LT(2, KC_ENTER), KC_LSFT, KC_NO, KC_LGUI, KC_NO, LCTL(KC_F)
+ ),
+ [_NUMBERS] = LAYOUT(
+ KC_NO, KC_F1, KC_F2, KC_F3, KC_F4, KC_NO, KC_NO, KC_7, KC_8, KC_9, KC_NO, KC_NO,
+ KC_NO, KC_F5, KC_F6, KC_F7, KC_F8, KC_NO, KC_NO, KC_4, KC_5, KC_6, KC_NO, KC_NO,
+ KC_NO, KC_F9, KC_F10, KC_F11, KC_F12, KC_NO, KC_NO, KC_1, KC_2, KC_3, KC_NO, KC_NO,
+ KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_0, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO
+ ),
+ [_SYMBOLS] = LAYOUT(
+ KC_NO, KC_PIPE, KC_AT, KC_LCBR, KC_RCBR, KC_CIRC, KC_QUOT, KC_DQUO, KC_EQL, KC_AMPR, KC_ASTR, KC_GRV,
+ KC_NO, KC_EXLM, KC_EXLM, KC_LPRN, KC_RPRN, KC_DLR, KC_EXLM, KC_QUES, KC_SLSH, KC_COLN, KC_SCLN, KC_PLUS,
+ KC_NO, KC_HASH, KC_PERC, KC_LBRC, KC_RBRC, KC_TILD, KC_LT, KC_GT, KC_MINS, KC_UNDS, KC_BSLS, KC_PSCR,
+ KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_BSPC, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, QK_BOOT
+ ),
+ [_NAVIGATION] = LAYOUT(
+ KC_NO, KC_NO, MS_BTN4, MS_UP, MS_BTN5, KC_NO, LSFT(KC_LEFT), LALT(KC_DOWN), LALT(KC_UP), LSFT(KC_RGHT), KC_NO, KC_VOLU,
+ KC_NO, KC_NO, MS_LEFT, MS_DOWN, MS_RGHT, KC_LEFT_CTRL, KC_HOME, MS_BTN1, MS_BTN3, MS_BTN2, KC_END, KC_VOLD,
+ KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_LEFT, KC_DOWN, KC_UP, KC_RGHT, KC_NO, KC_BRIU,
+ LCTL(KC_X), LCTL(KC_C), LCTL(KC_V), KC_NO, KC_NO, KC_NO, MS_WHLD, MS_WHLU, KC_NO, KC_NO, KC_NO, KC_BRID
+ ),
+};
+
+layer_state_t layer_state_set_user(layer_state_t state) {
+ switch (get_highest_layer(state)) {
+ case _MAIN:
+ /* Yellow */
+ rgb_matrix_sethsv_noeeprom(50, 255, 255); break;
+ case _NUMBERS:
+ /* Cyan */
+ rgb_matrix_sethsv_noeeprom(170, 255, 255); break;
+ case _SYMBOLS:
+ /* Purple */
+ rgb_matrix_sethsv_noeeprom(200, 255, 255); break;
+ case _NAVIGATION:
+ /* Green */
+ rgb_matrix_sethsv_noeeprom(85, 255, 255); break;
+ default:
+ /* Off */
+ rgb_matrix_sethsv_noeeprom(0, 0, 0); break;
+ }
+ return state;
+}
diff --git a/keyboards/pablojimenezmateo/classic48/readme.md b/keyboards/pablojimenezmateo/classic48/readme.md
new file mode 100644
index 00000000000..ff3dd072c55
--- /dev/null
+++ b/keyboards/pablojimenezmateo/classic48/readme.md
@@ -0,0 +1,28 @@
+# pablojimenezmateo/classic48
+
+
+
+A custom split keyboard with 48 keys and addressable LEDs.
+
+* Keyboard Maintainer: [Pablo Jimenez Mateo](https://github.com/pablojimenezmateo)
+* Hardware Supported: RP2040 Pro Micro
+* Hardware Availability: https://github.com/pablojimenezmateo/classic48
+
+Make example for this keyboard (after setting up your build environment):
+
+ make pablojimenezmateo/classic48:default
+
+Flashing example for this keyboard:
+
+ qmk flash -kb pablojimenezmateo/classic48 -km default -bl uf2-split-left
+ qmk flash -kb pablojimenezmateo/classic48 -km default -bl uf2-split-right
+
+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).
+
+## Bootloader
+
+Enter the bootloader in 3 ways:
+
+* **Bootmagic reset**: Hold down the key at (0,0) in the matrix (usually the top left key or Escape) and plug in the keyboard
+* **Physical reset button**: Briefly press the button on the back of the PCB - some may have pads you must short instead
+* **Keycode in layout**: Press the key mapped to `QK_BOOT` if it is available