diff --git a/keyboards/tszaboo/ortho4exent/config.h b/keyboards/tszaboo/ortho4exent/config.h
new file mode 100644
index 000000000..a88a9c183
--- /dev/null
+++ b/keyboards/tszaboo/ortho4exent/config.h
@@ -0,0 +1,136 @@
+/*
+Copyright 2021 tszaboo
+
+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
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID 0x5453 // "TS"
+#define PRODUCT_ID 0x7934 // "O4"
+#define DEVICE_VER 0x0001
+#define MANUFACTURER tszaboo
+#define PRODUCT ortho4exent
+
+/* key matrix size */
+#define MATRIX_ROWS 5
+#define MATRIX_COLS 15
+
+/*
+ * Keyboard Matrix Assignments
+ *
+ * Change this to how you wired your keyboard
+ * COLS: AVR pins used for columns, left to right
+ * ROWS: AVR pins used for rows, top to bottom
+ * DIODE_DIRECTION: COL2ROW = COL = Anode (+), ROW = Cathode (-, marked on diode)
+ * ROW2COL = ROW = Anode (+), COL = Cathode (-, marked on diode)
+ *
+*/
+#define MATRIX_ROW_PINS { B0, B1, D4, D7, B4 }
+/* 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14*/
+#define MATRIX_COL_PINS { F0, F1, F4, F5, F6, F7, C7, D6, D5, D3, D2, D1, B7, B3, B2 }
+#define UNUSED_PINS
+#define LED_CAPS_LOCK_PIN E6
+
+/* COL2ROW, ROW2COL*/
+#define DIODE_DIRECTION COL2ROW
+
+/*
+ * Split Keyboard specific options, make sure you have 'SPLIT_KEYBOARD = yes' in your rules.mk, and define SOFT_SERIAL_PIN.
+ */
+// #define SOFT_SERIAL_PIN D0 // or D1, D2, D3, E6
+
+// #define BACKLIGHT_PIN B7
+// #define BACKLIGHT_BREATHING
+// #define BACKLIGHT_LEVELS 3
+
+ #define RGB_DI_PIN B6
+ #ifdef RGB_DI_PIN
+ #define RGBLED_NUM 16
+ #define RGBLIGHT_HUE_STEP 8
+ #define RGBLIGHT_SAT_STEP 8
+ #define RGBLIGHT_VAL_STEP 8
+ #define RGBLIGHT_LIMIT_VAL 255 /* The maximum brightness level */
+ #define RGBLIGHT_SLEEP /* If defined, the RGB lighting will be switched off when the host goes to sleep */
+ /*== all animations enable ==*/
+ #define RGBLIGHT_ANIMATIONS
+ /*== or choose animations ==*/
+// #define RGBLIGHT_EFFECT_BREATHING
+// #define RGBLIGHT_EFFECT_RAINBOW_MOOD
+// #define RGBLIGHT_EFFECT_RAINBOW_SWIRL
+// #define RGBLIGHT_EFFECT_SNAKE
+// #define RGBLIGHT_EFFECT_KNIGHT
+// #define RGBLIGHT_EFFECT_CHRISTMAS
+// #define RGBLIGHT_EFFECT_STATIC_GRADIENT
+// #define RGBLIGHT_EFFECT_RGB_TEST
+// #define RGBLIGHT_EFFECT_ALTERNATING
+ #endif
+
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCE 5
+
+/* define if matrix has ghost (lacks anti-ghosting diodes) */
+//#define MATRIX_HAS_GHOST
+
+/* number of backlight levels */
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+/* If defined, GRAVE_ESC will always act as ESC when CTRL is held.
+ * This is userful for the Windows task manager shortcut (ctrl+shift+esc).
+ */
+// #define GRAVE_ESC_CTRL_OVERRIDE
+
+/*
+ * Force NKRO
+ *
+ * Force NKRO (nKey Rollover) to be enabled by default, regardless of the saved
+ * state in the bootmagic EEPROM settings. (Note that NKRO must be enabled in the
+ * makefile for this to work.)
+ *
+ * If forced on, NKRO can be disabled via magic key (default = LShift+RShift+N)
+ * until the next keyboard reset.
+ *
+ * NKRO may prevent your keystrokes from being detected in the BIOS, but it is
+ * fully operational during normal computer usage.
+ *
+ * For a less heavy-handed approach, enable NKRO via magic key (LShift+RShift+N)
+ * or via bootmagic (hold SPACE+N while plugging in the keyboard). Once set by
+ * bootmagic, NKRO mode will always be enabled until it is toggled again during a
+ * power-up.
+ *
+ */
+//#define FORCE_NKRO
+
+/* disable print */
+//#define NO_PRINT
+
+/* disable action features */
+//#define NO_ACTION_LAYER
+//#define NO_ACTION_TAPPING
+//#define NO_ACTION_ONESHOT
+
+/* disable these deprecated features by default */
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
+/* Bootmagic Lite key configuration */
+//#define BOOTMAGIC_LITE_ROW 0
+//#define BOOTMAGIC_LITE_COLUMN 0
diff --git a/keyboards/tszaboo/ortho4exent/info.json b/keyboards/tszaboo/ortho4exent/info.json
new file mode 100644
index 000000000..a34b997ca
--- /dev/null
+++ b/keyboards/tszaboo/ortho4exent/info.json
@@ -0,0 +1,86 @@
+{
+ "keyboard_name": "Ortho4exent",
+ "url": "https://github.com/tszaboo/Ortho4Exent",
+ "maintainer": "tszaboo",
+ "width": 16,
+ "height": 5,
+ "layouts": {
+ "LAYOUT": {
+ "layout": [
+ {"label":"k00","x":0,"y":0,"w":1.5},
+ {"label":"k01","x":1.5,"y":0},
+ {"label":"k02","x":2.5,"y":0},
+ {"label":"k03","x":3.5,"y":0},
+ {"label":"k04","x":4.5,"y":0},
+ {"label":"k05","x":5.5,"y":0},
+ {"label":"k06","x":6.5,"y":0},
+ {"label":"k07","x":7.5,"y":0},
+ {"label":"k08","x":8.5,"y":0},
+ {"label":"k09","x":9.5,"y":0},
+ {"label":"k0A","x":10.5,"y":0},
+ {"label":"k0B","x":11.5,"y":0},
+ {"label":"k0C","x":12.5,"y":0},
+ {"label":"k0D","x":13.5,"y":0},
+ {"label":"k0E","x":14.5,"y":0,"w":1.5},
+ {"label":"k10","x":0,"y":1,"w":1.5},
+ {"label":"k11","x":1.5,"y":1},
+ {"label":"k12","x":2.5,"y":1},
+ {"label":"k13","x":3.5,"y":1},
+ {"label":"k14","x":4.5,"y":1},
+ {"label":"k15","x":5.5,"y":1},
+ {"label":"k16","x":6.5,"y":1},
+ {"label":"k17","x":7.5,"y":1},
+ {"label":"k18","x":8.5,"y":1},
+ {"label":"k19","x":9.5,"y":1},
+ {"label":"k1A","x":10.5,"y":1},
+ {"label":"k1B","x":11.5,"y":1},
+ {"label":"k1C","x":12.5,"y":1},
+ {"label":"k1D","x":13.5,"y":1},
+ {"label":"k1E","x":14.5,"y":1,"w":1.5},
+ {"label":"k20","x":0,"y":2},
+ {"label":"k21","x":1.5,"y":2},
+ {"label":"k22","x":2.5,"y":2},
+ {"label":"k23","x":3.5,"y":2},
+ {"label":"k24","x":4.5,"y":2},
+ {"label":"k25","x":5.5,"y":2},
+ {"label":"k26","x":6.5,"y":2},
+ {"label":"k27","x":7.5,"y":2},
+ {"label":"k28","x":8.5,"y":2},
+ {"label":"k29","x":9.5,"y":2},
+ {"label":"k2A","x":10.5,"y":2},
+ {"label":"k2B","x":11.5,"y":2},
+ {"label":"k2C","x":12.5,"y":2},
+ {"label":"k2D","x":13.5,"y":2},
+ {"label":"k2E","x":14.5,"y":2},
+ {"label":"k30","x":0,"y":3,"w":1.5},
+ {"label":"k31","x":1.5,"y":3},
+ {"label":"k32","x":2.5,"y":3},
+ {"label":"k33","x":3.5,"y":3},
+ {"label":"k34","x":4.5,"y":3},
+ {"label":"k35","x":5.5,"y":3},
+ {"label":"k36","x":6.5,"y":3},
+ {"label":"k37","x":7.5,"y":3},
+ {"label":"k38","x":8.5,"y":3},
+ {"label":"k39","x":9.5,"y":3},
+ {"label":"k3A","x":10.5,"y":3},
+ {"label":"k3B","x":11.5,"y":3},
+ {"label":"k3C","x":12.5,"y":3},
+ {"label":"k3D","x":13.5,"y":3},
+ {"label":"k3E","x":14.5,"y":3,"w":1.5},
+ {"label":"k40","x":0,"y":4,"w":1.5},
+ {"label":"k41","x":1.5,"y":4,"w":1.5},
+ {"label":"k42","x":3,"y":4,"w":1.5},
+ {"label":"k43","x":4.5,"y":4,"w":2},
+ {"label":"k44","x":6.5,"y":4},
+ {"label":"k45","x":7.5,"y":4},
+ {"label":"k46","x":8.5,"y":4},
+ {"label":"k47","x":9.5,"y":4,"w":2},
+ {"label":"k48","x":11.5,"y":4,"w":1.5},
+ {"label":"k49","x":13,"y":4,"w":1.5},
+ {"label":"k4A","x":14.5,"y":4,"w":1.5}
+
+ ]
+ }
+ }
+ }
+
diff --git a/keyboards/tszaboo/ortho4exent/keymaps/default/keymap.c b/keyboards/tszaboo/ortho4exent/keymaps/default/keymap.c
new file mode 100644
index 000000000..c6a8a7a80
--- /dev/null
+++ b/keyboards/tszaboo/ortho4exent/keymaps/default/keymap.c
@@ -0,0 +1,33 @@
+/* Copyright 2021 tszaboo
+ *
+ * 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(
+ //` 1 2 3 4 5 - ESC = 6 7 8 9 0 BSP
+ KC_GRV, KC_1, KC_2, KC_3, KC_4, KC_5, KC_MINS, KC_ESC, KC_EQL, KC_6, KC_7, KC_8, KC_9, KC_0, KC_BSPC,
+ KC_TAB, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_LBRC, KC_HOME, KC_RBRC, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_DEL,
+ KC_CAPS, KC_A, KC_S, KC_D, KC_F, KC_G, KC_QUOT, KC_END, KC_BSLS, KC_H, KC_J, KC_K, KC_L, KC_SCLN, KC_ENT,
+ KC_LSFT, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_PGUP, KC_UP, KC_PGDN, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH, KC_LSFT,
+ KC_LCTL, KC_LGUI, KC_LALT, KC_SPC, KC_LEFT, KC_DOWN, KC_RGHT, KC_SPC, KC_RALT, KC_RCTL, MO(1)
+ ),
+ [1] = LAYOUT(
+ KC_TRNS, KC_F1 , KC_F2 , KC_F3 , KC_F4 , KC_F5 , KC_TRNS, KC_TRNS, KC_TRNS, KC_F6 , KC_F7 , KC_F8 , KC_F9 , KC_F10 , 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, RESET, 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_TOG, RGB_MOD, RGB_M_P, RGB_M_G, 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/tszaboo/ortho4exent/keymaps/default/readme.md b/keyboards/tszaboo/ortho4exent/keymaps/default/readme.md
new file mode 100644
index 000000000..153fc96da
--- /dev/null
+++ b/keyboards/tszaboo/ortho4exent/keymaps/default/readme.md
@@ -0,0 +1 @@
+# The default keymap for Ortho4exent
diff --git a/keyboards/tszaboo/ortho4exent/ortho4exent.c b/keyboards/tszaboo/ortho4exent/ortho4exent.c
new file mode 100644
index 000000000..b6ef9fedc
--- /dev/null
+++ b/keyboards/tszaboo/ortho4exent/ortho4exent.c
@@ -0,0 +1,16 @@
+/* Copyright 2021 tszaboo
+ *
+ * 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 "ortho4exent.h"
diff --git a/keyboards/tszaboo/ortho4exent/ortho4exent.h b/keyboards/tszaboo/ortho4exent/ortho4exent.h
new file mode 100644
index 000000000..3814ce069
--- /dev/null
+++ b/keyboards/tszaboo/ortho4exent/ortho4exent.h
@@ -0,0 +1,41 @@
+/* Copyright 2021 tszaboo
+ *
+ * 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
+
+#include "quantum.h"
+
+/* This a shortcut to help you visually see your layout.
+ *
+ * The first section contains all of the arguments representing the physical
+ * layout of the board and position of the keys.
+ *
+ * The second converts the arguments into a two-dimensional array which
+ * represents the switch matrix.
+ */
+#define LAYOUT( \
+ k00, k01, k02, k03, k04, k05, k06, k07, k08, k09, k0A, k0B, k0C, k0D, k0E,\
+ k10, k11, k12, k13, k14, k15, k16, k17, k18, k19, k1A, k1B, k1C, k1D, k1E,\
+ k20, k21, k22, k23, k24, k25, k26, k27, k28, k29, k2A, k2B, k2C, k2D, k2E,\
+ k30, k31, k32, k33, k34, k35, k36, k37, k38, k39, k3A, k3B, k3C, k3D, k3E,\
+ k40, k41, k42, k43, k44, k45, k46, k47, k48, k49, k4A \
+) \
+{ \
+ { k00, k01, k02, k03, k04, k05, k06, k07, k08, k09, k0A, k0B, k0C, k0D, k0E }, \
+ { k10, k11, k12, k13, k14, k15, k16, k17, k18, k19, k1A, k1B, k1C, k1D, k1E }, \
+ { k20, k21, k22, k23, k24, k25, k26, k27, k28, k29, k2A, k2B, k2C, k2D, k2E }, \
+ { k30, k31, k32, k33, k34, k35, k36, k37, k38, k39, k3A, k3B, k3C, k3D, k3E }, \
+ { k40, k41, KC_NO, k42, k43, KC_NO, k44, k45, k46, k47, KC_NO, k48, KC_NO, k49, k4A }, \
+}
diff --git a/keyboards/tszaboo/ortho4exent/readme.md b/keyboards/tszaboo/ortho4exent/readme.md
new file mode 100644
index 000000000..203928059
--- /dev/null
+++ b/keyboards/tszaboo/ortho4exent/readme.md
@@ -0,0 +1,15 @@
+# tszaboo
+
+Ortholinear PCB that is a drop-in replacement for Exent keyboard.
+Layout is inspired by excellent Boardwalk PCB, but extended with an extra column to accommodate the 65% Exent form factor.
+
+* Keyboard Maintainer: [tszaboo](https://github.com/tszaboo/)
+* Keyboard Product owner: [Riba]
+* Hardware Supported: Ortho4exent
+* Hardware Availability: [Geekhack Group Buy](https://geekhack.org/index.php?topic=110120.0)
+
+Make example for this keyboard (after setting up your build environment):
+
+ make tszaboo/ortho4exent:default
+
+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).
diff --git a/keyboards/tszaboo/ortho4exent/rules.mk b/keyboards/tszaboo/ortho4exent/rules.mk
new file mode 100644
index 000000000..e1756f2c4
--- /dev/null
+++ b/keyboards/tszaboo/ortho4exent/rules.mk
@@ -0,0 +1,23 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = caterina
+
+# Build Options
+# change yes to no to disable
+#
+BOOTMAGIC_ENABLE = lite # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = no # Mouse keys
+EXTRAKEY_ENABLE = yes # Audio control and System control
+CONSOLE_ENABLE = yes # Console for debug
+COMMAND_ENABLE = yes # Commands for debug and configuration
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = no # Breathing sleep LED during USB suspend
+# if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes # USB Nkey Rollover
+BACKLIGHT_ENABLE = no # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = yes # Enable keyboard RGB underglow
+BLUETOOTH_ENABLE = no # Enable Bluetooth
+AUDIO_ENABLE = no # Audio output
+LTO_ENABLE = yes