diff --git a/keyboards/silakka54/config.h b/keyboards/silakka54/config.h
new file mode 100644
index 0000000000..220b85cd08
--- /dev/null
+++ b/keyboards/silakka54/config.h
@@ -0,0 +1,25 @@
+/* Copyright 2024 Juho T. (@Squalius-cephalus)
+ *
+ * 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
+
+#define SERIAL_USART_FULL_DUPLEX
+#define SERIAL_USART_TX_PIN GP0
+#define SERIAL_USART_RX_PIN GP1
+
+#define RP2040_BOOTLOADER_DOUBLE_TAP_RESET
+#define RP2040_BOOTLOADER_DOUBLE_TAP_RESET_TIMEOUT 200U
+#define RP2040_BOOTLOADER_DOUBLE_TAP_RESET_LED GP17
diff --git a/keyboards/silakka54/keyboard.json b/keyboards/silakka54/keyboard.json
new file mode 100644
index 0000000000..e1ad9aac9e
--- /dev/null
+++ b/keyboards/silakka54/keyboard.json
@@ -0,0 +1,102 @@
+{
+ "manufacturer": "Squalius-cephalus",
+ "keyboard_name": "silakka54",
+ "maintainer": "Squalius-cephalus",
+ "bootloader": "rp2040",
+ "diode_direction": "COL2ROW",
+ "features": {
+ "bootmagic": true,
+ "extrakey": true,
+ "mousekey": true,
+ "nkro": true
+ },
+ "split": {
+ "enabled": true,
+ "serial": {
+ "driver": "vendor"
+ }
+ },
+ "matrix_pins": {
+ "cols": ["GP7", "GP8", "GP9", "GP10", "GP11", "GP12"],
+ "rows": ["GP2", "GP3", "GP4", "GP5","GP6"]
+ },
+ "processor": "RP2040",
+ "url": "https://github.com/Squalius-cephalus/silakka54",
+ "usb": {
+ "device_version": "1.0.0",
+ "pid": "0x1212",
+ "vid": "0xFEED"
+ },
+ "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": [5, 5], "x": 0, "y": 5},
+ {"matrix": [5, 4], "x": 1, "y": 5},
+ {"matrix": [5, 3], "x": 2, "y": 5},
+ {"matrix": [5, 2], "x": 3, "y": 5},
+ {"matrix": [5, 1], "x": 4, "y": 5},
+ {"matrix": [5, 0], "x": 5, "y": 5},
+
+
+ {"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": [6, 5], "x": 0, "y": 6},
+ {"matrix": [6, 4], "x": 1, "y": 6},
+ {"matrix": [6, 3], "x": 2, "y": 6},
+ {"matrix": [6, 2], "x": 3, "y": 6},
+ {"matrix": [6, 1], "x": 4, "y": 6},
+ {"matrix": [6, 0], "x": 5, "y": 6},
+
+ {"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": [7, 5], "x": 0, "y": 7},
+ {"matrix": [7, 4], "x": 1, "y": 7},
+ {"matrix": [7, 3], "x": 2, "y": 7},
+ {"matrix": [7, 2], "x": 3, "y": 7},
+ {"matrix": [7, 1], "x": 4, "y": 7},
+ {"matrix": [7, 0], "x": 5, "y": 7},
+
+ {"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": [8, 5], "x": 0, "y": 9},
+ {"matrix": [8, 4], "x": 1, "y": 9},
+ {"matrix": [8, 3], "x": 2, "y": 9},
+ {"matrix": [8, 2], "x": 3, "y": 9},
+ {"matrix": [8, 1], "x": 4, "y": 9},
+ {"matrix": [8, 0], "x": 5, "y": 9},
+
+ {"matrix": [4, 3], "x": 3, "y": 4},
+ {"matrix": [4, 4], "x": 4, "y": 4},
+ {"matrix": [4, 5], "x": 5, "y": 4},
+
+ {"matrix": [9, 5], "x": 3, "y": 9},
+ {"matrix": [9, 4], "x": 4, "y": 9},
+ {"matrix": [9, 3], "x": 5, "y": 9}
+
+
+ ]
+ }
+ }
+}
diff --git a/keyboards/silakka54/keymaps/default/keymap.c b/keyboards/silakka54/keymaps/default/keymap.c
new file mode 100644
index 0000000000..aa5e64efa3
--- /dev/null
+++ b/keyboards/silakka54/keymaps/default/keymap.c
@@ -0,0 +1,22 @@
+// Copyright 2023 QMK
+// 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_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_MINS,
+ 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_LCTL, 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_RSFT,
+ KC_LGUI, MO(1), KC_SPC, KC_ENT, KC_RCTL, KC_RALT
+ ),
+ [1] = LAYOUT(
+ 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_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_PGUP, KC_PGDN, KC_HOME, KC_END, KC_DEL, KC_F12,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_LEFT, KC_DOWN, KC_UP, KC_RGHT, KC_LBRC, KC_RBRC,
+ 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/silakka54/readme.md b/keyboards/silakka54/readme.md
new file mode 100644
index 0000000000..08a38aa473
--- /dev/null
+++ b/keyboards/silakka54/readme.md
@@ -0,0 +1,26 @@
+# Silakka54
+
+
+
+Silakka54 is a RP2040 Zero based 54-key column staggered split keyboard. PCB uses hotswap sockets. Design is inspired from REVIUNG41 and Corne keyboards.
+
+* Keyboard Maintainer: [Squalius-cephalus](https://github.com/Squalius-cephalus)
+* Hardware Supported: Silakka54 PCB
+* Hardware Availability: https://github.com/Squalius-cephalus/silakka54
+
+Make example for this keyboard (after setting up your build environment):
+
+ make silakka54:default
+
+Flashing example for this keyboard:
+
+ make silakka54: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).
+
+## Bootloader
+
+Enter the bootloader in 2 ways:
+
+* **Physical boot button**: Hold BOOT button down and connect MCU to the PC
+* **Keycode in layout**: Press the key mapped to `QK_BOOT` if it is available