diff --git a/keyboards/handwired/split89/config.h b/keyboards/handwired/split89/config.h
new file mode 100644
index 0000000000..0151822fa2
--- /dev/null
+++ b/keyboards/handwired/split89/config.h
@@ -0,0 +1,163 @@
+/* Copyright 2021 jurassic73
+
+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 0xFEED
+#define PRODUCT_ID 0x0000
+#define DEVICE_VER 0x0001
+#define MANUFACTURER jurassic73
+#define PRODUCT split89
+
+/*
+ * 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)
+ *
+ */
+
+/* key matrix size
+ROWS = total count of rows for both sides - this is broken out accordingly in split.h
+COLS = number of cols per side which curently needs to be equal so there are blank columns for the left side in the split89.h file
+ */
+#define MATRIX_ROWS 12
+#define MATRIX_COLS 10
+
+/* Left side matrix */
+#define MATRIX_ROW_PINS { F6, F7, B1, B3, B2, B6 }
+#define MATRIX_COL_PINS { F5, F4, B5, B4, E6, D7, C6, D4, D2, D3 }
+/* Right side matrix */
+#define MATRIX_ROW_PINS_RIGHT { F6, F7, B1, B3, B2, B6 }
+#define MATRIX_COL_PINS_RIGHT { F5, F4, B5, B4, E6, D7, C6, D4, D2, D3 }
+
+/* this will be tied to high (VCC with a 2k to 10k resistor) on the left keyboard half and tied to low (GND using a wire jumper only) on the right keyboard half. This allows a user to plug in a USB cable to either side and function correctly with or without a TRS/TRRS cable with a single hex file.
+#define SPLIT_HAND_PIN D1
+
+/* COL2ROW, ROW2COL */
+#define DIODE_DIRECTION COL2ROW
+
+/* handedness */
+/*
+ * 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 USE_SERIAL
+
+//#define LED_NUM_LOCK_PIN B0
+//#define LED_CAPS_LOCK_PIN B1
+//#define LED_SCROLL_LOCK_PIN B2
+//#define LED_COMPOSE_PIN B3
+//#define LED_KANA_PIN B4
+
+//#define BACKLIGHT_PIN B7
+//#define BACKLIGHT_LEVELS 3
+//#define BACKLIGHT_BREATHING
+
+//#define RGB_DI_PIN E2
+//#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
+/*== customize breathing effect ==*/
+/*==== (DEFAULT) use fixed table instead of exp() and sin() ====*/
+//# define RGBLIGHT_BREATHE_TABLE_SIZE 256 // 256(default) or 128 or 64
+/*==== use exp() and sin() ====*/
+//# define RGBLIGHT_EFFECT_BREATHE_CENTER 1.85 // 1 to 2.7
+//# define RGBLIGHT_EFFECT_BREATHE_MAX 255 // 0 to 255
+//#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
+
+/* 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 useful 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
+
+/*
+ * Feature disable options
+ * These options are also useful to firmware size reduction.
+ */
+
+/* disable debug print */
+//#define NO_DEBUG
+
+/* 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/handwired/split89/info.json b/keyboards/handwired/split89/info.json
new file mode 100644
index 0000000000..bbdf48966e
--- /dev/null
+++ b/keyboards/handwired/split89/info.json
@@ -0,0 +1,12 @@
+{
+ "keyboard_name": "split89",
+ "maintainer": "jurassic73",
+ "url": "https://github.com/jurassic73/split89",
+ "width": 21,
+ "height": 6.5,
+ "layouts": {
+ "LAYOUT": {
+ "layout": [{"label":"Esc", "x":0, "y":0}, {"label":"F1", "x":2, "y":0}, {"label":"F2", "x":3, "y":0}, {"label":"F3", "x":4, "y":0}, {"label":"F4", "x":5, "y":0}, {"label":"F5", "x":6, "y":0}, {"label":"F6", "x":10.25, "y":0}, {"label":"F7", "x":11.25, "y":0}, {"label":"F8", "x":12.25, "y":0}, {"label":"F9", "x":13.75, "y":0}, {"label":"F10", "x":14.75, "y":0}, {"label":"F11", "x":15.75, "y":0}, {"label":"F12", "x":16.75, "y":0}, {"label":"PrtSc", "x":18, "y":0}, {"label":"Scroll Lock", "x":19, "y":0}, {"label":"Pause", "x":20, "y":0}, {"label":"~", "x":0, "y":1.5}, {"label":"!", "x":1, "y":1.5}, {"label":"@", "x":2, "y":1.5}, {"label":"#", "x":3, "y":1.5}, {"label":"$", "x":4, "y":1.5}, {"label":"%", "x":5, "y":1.5}, {"label":"^", "x":6, "y":1.5}, {"label":"&", "x":9.75, "y":1.5}, {"label":"*", "x":10.75, "y":1.5}, {"label":"(", "x":11.75, "y":1.5}, {"label":")", "x":12.75, "y":1.5}, {"label":"_", "x":13.75, "y":1.5}, {"label":"+", "x":14.75, "y":1.5}, {"label":"Backspace", "x":15.75, "y":1.5, "w":2}, {"label":"Insert", "x":18, "y":1.5}, {"label":"Home", "x":19, "y":1.5}, {"label":"PgUp", "x":20, "y":1.5}, {"label":"Tab", "x":0, "y":2.5, "w":1.5}, {"label":"Q", "x":1.5, "y":2.5}, {"label":"W", "x":2.5, "y":2.5}, {"label":"E", "x":3.5, "y":2.5}, {"label":"R", "x":4.5, "y":2.5}, {"label":"T", "x":5.5, "y":2.5}, {"label":"Y", "x":9.25, "y":2.5}, {"label":"U", "x":10.25, "y":2.5}, {"label":"I", "x":11.25, "y":2.5}, {"label":"O", "x":12.25, "y":2.5}, {"label":"P", "x":13.25, "y":2.5}, {"label":"{", "x":14.25, "y":2.5}, {"label":"}", "x":15.25, "y":2.5}, {"label":"|", "x":16.25, "y":2.5, "w":1.5}, {"label":"Delete", "x":18, "y":2.5}, {"label":"End", "x":19, "y":2.5}, {"label":"PgDn", "x":20, "y":2.5}, {"label":"Caps Lock", "x":0, "y":3.5, "w":1.75}, {"label":"A", "x":1.75, "y":3.5}, {"label":"S", "x":2.75, "y":3.5}, {"label":"D", "x":3.75, "y":3.5}, {"label":"F", "x":4.75, "y":3.5}, {"label":"G", "x":5.75, "y":3.5}, {"label":"H", "x":9.5, "y":3.5}, {"label":"J", "x":10.5, "y":3.5}, {"label":"K", "x":11.5, "y":3.5}, {"label":"L", "x":12.5, "y":3.5}, {"label":":", "x":13.5, "y":3.5}, {"label":"\"", "x":14.5, "y":3.5}, {"label":"Enter", "x":15.5, "y":3.5, "w":2.25}, {"label":"Shift", "x":0, "y":4.5, "w":2.25}, {"label":"Z", "x":2.25, "y":4.5}, {"label":"X", "x":3.25, "y":4.5}, {"label":"C", "x":4.25, "y":4.5}, {"label":"V", "x":5.25, "y":4.5}, {"label":"B", "x":6.25, "y":4.5}, {"label":"N", "x":10, "y":4.5}, {"label":"M", "x":11, "y":4.5}, {"label":"<", "x":12, "y":4.5}, {"label":">", "x":13, "y":4.5}, {"label":"?", "x":14, "y":4.5}, {"label":"Shift", "x":15, "y":4.5, "w":2.75}, {"label":"\u2191", "x":19, "y":4.5}, {"label":"Ctrl", "x":0, "y":5.5, "w":1.25}, {"label":"Fn", "x":1.25, "y":5.5, "w":1.25}, {"label":"Win", "x":2.5, "y":5.5, "w":1.25}, {"label":"Alt", "x":3.75, "y":5.5, "w":1.25}, {"x":5, "y":5.5, "w":2.25}, {"x":10, "y":5.5, "w":2.75}, {"label":"Alt", "x":12.75, "y":5.5, "w":1.25}, {"label":"Win", "x":14, "y":5.5, "w":1.25}, {"label":"Menu", "x":15.25, "y":5.5, "w":1.25}, {"label":"Ctrl", "x":16.5, "y":5.5, "w":1.25}, {"label":"\u2190", "x":18, "y":5.5}, {"label":"\u2193", "x":19, "y":5.5}, {"label":"\u2192", "x":20, "y":5.5}]
+ }
+ }
+}
\ No newline at end of file
diff --git a/keyboards/handwired/split89/keymaps/default/keymap.c b/keyboards/handwired/split89/keymaps/default/keymap.c
new file mode 100644
index 0000000000..3b60ef4f68
--- /dev/null
+++ b/keyboards/handwired/split89/keymaps/default/keymap.c
@@ -0,0 +1,42 @@
+/* Copyright 2021 jurassic73
+ *
+ * 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
+
+// Defines names for use in layer keycodes and the keymap
+enum layer_names {
+ BASE,
+ AUD,
+};
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+ /* Base */
+ [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_PSCR, KC_SLCK, KC_PAUS,
+ 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_INS, KC_HOME, KC_PGUP,
+ KC_GRV, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_U, KC_I, KC_O, KC_P, KC_LBRC, KC_RBRC, KC_BSLS, KC_DEL, KC_END, KC_PGDN,
+ KC_TAB, KC_A, KC_S, KC_D, KC_F, KC_G, KC_Y, KC_J, KC_K, KC_L, KC_SCLN,KC_QUOT, KC_ENT,
+ KC_CAPS, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_H, KC_M, KC_COMM,KC_DOT, KC_SLSH, KC_RSHIFT, KC_UP,
+ KC_LSFT, KC_LCTL,MO(1),KC_LGUI,KC_LALT,KC_SPACE, KC_N, KC_SPACE, KC_RALT,KC_RGUI, KC_APP, KC_RCTL, KC_LEFT, KC_DOWN, KC_RGHT
+ ),
+ /* Volume */
+ [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,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_VOLU,
+ KC_TRNS,KC_TRNS,KC_TRNS, KC_TRNS,KC_TRNS,KC_MEDIA_PLAY_PAUSE, KC_TRNS,KC_TRNS,KC_TRNS,KC_TRNS,KC_TRNS,KC_TRNS, KC_MPRV, KC_VOLD, KC_MNXT
+ ),
+};
diff --git a/keyboards/handwired/split89/keymaps/default/readme.md b/keyboards/handwired/split89/keymaps/default/readme.md
new file mode 100644
index 0000000000..086d8977a0
--- /dev/null
+++ b/keyboards/handwired/split89/keymaps/default/readme.md
@@ -0,0 +1,6 @@
+# The default keymap for split89
+
+A 2nd layer is configured and activated while holding down the Aud key.
+
+![image](https://i.imgur.com/h1C4d9t.png)
+
diff --git a/keyboards/handwired/split89/readme.md b/keyboards/handwired/split89/readme.md
new file mode 100644
index 0000000000..c3caf6a7fd
--- /dev/null
+++ b/keyboards/handwired/split89/readme.md
@@ -0,0 +1,18 @@
+# split89
+
+![split89](https://i.imgur.com/OExxlQx.jpeg)
+
+An 89-key split TKL with 3d printed case and powered with Pro Micro controllers.
+
+* Full build documented here: [https://github.com/jurassic73/split89](https://github.com/jurassic73/split89)
+
+* Keyboard Maintainer: [jurassic73](https://github.com/jurassic73)
+* Hardware Supported: ATmega32U4 Pro Micro
+* Hardware Availability: see [Bill of Materials](https://github.com/jurassic73/split89#bill-of-materials).
+
+
+Make example for this keyboard (after setting up your build environment):
+
+ make handwired/split89: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/handwired/split89/rules.mk b/keyboards/handwired/split89/rules.mk
new file mode 100644
index 0000000000..9b916f556e
--- /dev/null
+++ b/keyboards/handwired/split89/rules.mk
@@ -0,0 +1,24 @@
+# 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 = yes # Mouse keys
+EXTRAKEY_ENABLE = yes # Audio control and System control
+CONSOLE_ENABLE = no # Console for debug
+COMMAND_ENABLE = no # 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 = no # USB Nkey Rollover
+BACKLIGHT_ENABLE = no # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = no # Enable keyboard RGB underglow
+BLUETOOTH_ENABLE = no # Enable Bluetooth
+AUDIO_ENABLE = no # Audio output
+
+SPLIT_KEYBOARD = yes
diff --git a/keyboards/handwired/split89/split89.c b/keyboards/handwired/split89/split89.c
new file mode 100644
index 0000000000..8cceee9c59
--- /dev/null
+++ b/keyboards/handwired/split89/split89.c
@@ -0,0 +1,17 @@
+/* Copyright 2021 jurassic73
+ *
+ * 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 "split89.h"
diff --git a/keyboards/handwired/split89/split89.h b/keyboards/handwired/split89/split89.h
new file mode 100644
index 0000000000..d04f0296d7
--- /dev/null
+++ b/keyboards/handwired/split89/split89.h
@@ -0,0 +1,50 @@
+/* Copyright 2021 jurassic73
+ *
+ * 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 is 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 minus blanks in the matrix.
+ *
+ * The second converts the arguments into a two-dimensional array which
+ * represents the switch matrix which includes blanks in the wired out matrix.
+ */
+#define LAYOUT( \
+ k00, k01, k02, k03, k04, k05, k06, k07, k08, k09, k10, k11, k12, k13, k14, k15, \
+ k16, k17, k18, k19, k20, k21, k22, k23, k24, k25, k26, k27, k28, k29, k30, k31, \
+ k32, k33, k34, k35, k36, k37, k38, k39, k40, k41, k42, k43, k44, k45, k46, k47, \
+ k48, k49, k50, k51, k52, k53, k54, k55, k56, k57, k58, k59, k60, \
+ k61, k62, k63, k64, k65, k66, k67, k68, k69, k70, k71, k72, k73, \
+ k74, k75, k76, k77, k78, k79, k80, k81, k82, k83, k84, k85, k86, k87, k88 \
+ ) \
+ { \
+ { KC_NO, KC_NO, KC_NO, KC_NO, k00, k01, k02, k03, k04, k05 }, \
+ { KC_NO, KC_NO, KC_NO, KC_NO, k16, k17, k18, k19, k20, k21 }, \
+ { KC_NO, KC_NO, KC_NO, KC_NO, k32, k33, k34, k35, k36, k37 }, \
+ { KC_NO, KC_NO, KC_NO, KC_NO, k48, k49, k50, k51, k52, k53 }, \
+ { KC_NO, KC_NO, KC_NO, KC_NO, k61, k62, k63, k64, k65, k66, }, \
+ { KC_NO, KC_NO, KC_NO, KC_NO, k74, k75, k76, k77, k78, k79, }, \
+ { k06, k07, k08, k09, k10, k11, k12, k13, k14, k15 }, \
+ { k22, k23, k24, k25, k26, k27, k28, k29, k30, k31 }, \
+ { k38, k39, k40, k41, k42, k43, k44, k45, k46, k47 }, \
+ { k54, k55, k56, k57, k58, k59, k60, KC_NO, KC_NO, KC_NO }, \
+ { k67, k68, k69, k70, k71, KC_NO, k72, KC_NO, k73, KC_NO }, \
+ { k80, k81, KC_NO, k82, k83, k84, k85, k86, k87, k88 } \
+}