diff --git a/keyboards/protozoa/event_horizon/event_horizon.c b/keyboards/protozoa/event_horizon/event_horizon.c
new file mode 100644
index 0000000000..544d7c32b2
--- /dev/null
+++ b/keyboards/protozoa/event_horizon/event_horizon.c
@@ -0,0 +1,21 @@
+/* Copyright 2022 Yiancar-Designs
+ *
+ * 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 "quantum.h"
+
+void led_init_ports(void) {
+ // Set our LED pins as open drain outputs
+ setPinOutputOpenDrain(LED_CAPS_LOCK_PIN);
+}
diff --git a/keyboards/protozoa/event_horizon/info.json b/keyboards/protozoa/event_horizon/info.json
new file mode 100644
index 0000000000..42482c09ba
--- /dev/null
+++ b/keyboards/protozoa/event_horizon/info.json
@@ -0,0 +1,108 @@
+{
+ "manufacturer": "Yiancar-Designs",
+ "keyboard_name": "Event Horizon",
+ "maintainer": "Yiancar-Designs",
+ "bootloader": "stm32-dfu",
+ "diode_direction": "COL2ROW",
+ "features": {
+ "bootmagic": true,
+ "command": false,
+ "console": false,
+ "extrakey": true,
+ "mousekey": true,
+ "nkro": true
+ },
+ "indicators": {
+ "caps_lock": "B6",
+ "on_state": 0
+ },
+ "matrix_pins": {
+ "cols": ["A1", "B1", "B0", "A7", "A6", "A5", "A4", "A3", "B2", "B10", "B11", "B12", "B13", "B14", "B15", "B3"],
+ "rows": ["A2", "B9", "B8", "B5", "B4"]
+ },
+ "processor": "STM32F072",
+ "url": "https://yiancar-designs.com",
+ "usb": {
+ "device_version": "0.0.1",
+ "pid": "0x4648",
+ "vid": "0x8968"
+ },
+ "layouts": {
+ "LAYOUT": {
+ "layout": [
+ {"matrix": [0, 0], "x": 1.25, "y": 0},
+ {"matrix": [0, 1], "x": 2.25, "y": 0},
+ {"matrix": [0, 2], "x": 3.25, "y": 0},
+ {"matrix": [0, 3], "x": 4.25, "y": 0},
+ {"matrix": [0, 4], "x": 5.25, "y": 0},
+ {"matrix": [0, 5], "x": 6.25, "y": 0},
+ {"matrix": [0, 6], "x": 7.25, "y": 0},
+ {"matrix": [0, 7], "x": 8.25, "y": 0},
+ {"matrix": [0, 8], "x": 9.25, "y": 0},
+ {"matrix": [0, 9], "x": 10.25, "y": 0},
+ {"matrix": [0, 10], "x": 11.25, "y": 0},
+ {"matrix": [0, 11], "x": 12.25, "y": 0},
+ {"matrix": [0, 12], "x": 13.25, "y": 0},
+ {"matrix": [0, 13], "x": 14.25, "y": 0},
+ {"matrix": [2, 12], "x": 15.25, "y": 0},
+ {"matrix": [0, 14], "x": 16.25, "y": 0},
+ {"matrix": [1, 15], "x": 0, "y": 1},
+ {"matrix": [1, 0], "x": 1.25, "y": 1, "w": 1.5},
+ {"matrix": [1, 1], "x": 2.75, "y": 1},
+ {"matrix": [1, 2], "x": 3.75, "y": 1},
+ {"matrix": [1, 3], "x": 4.75, "y": 1},
+ {"matrix": [1, 4], "x": 5.75, "y": 1},
+ {"matrix": [1, 5], "x": 6.75, "y": 1},
+ {"matrix": [1, 6], "x": 7.75, "y": 1},
+ {"matrix": [1, 7], "x": 8.75, "y": 1},
+ {"matrix": [1, 8], "x": 9.75, "y": 1},
+ {"matrix": [1, 9], "x": 10.75, "y": 1},
+ {"matrix": [1, 10], "x": 11.75, "y": 1},
+ {"matrix": [1, 11], "x": 12.75, "y": 1},
+ {"matrix": [1, 12], "x": 13.75, "y": 1},
+ {"matrix": [1, 13], "x": 14.75, "y": 1, "w": 1.5},
+ {"matrix": [1, 14], "x": 16.25, "y": 1},
+ {"matrix": [2, 15], "x": 0, "y": 2},
+ {"matrix": [2, 0], "x": 1.25, "y": 2, "w": 1.75},
+ {"matrix": [2, 1], "x": 3, "y": 2},
+ {"matrix": [2, 2], "x": 4, "y": 2},
+ {"matrix": [2, 3], "x": 5, "y": 2},
+ {"matrix": [2, 4], "x": 6, "y": 2},
+ {"matrix": [2, 5], "x": 7, "y": 2},
+ {"matrix": [2, 6], "x": 8, "y": 2},
+ {"matrix": [2, 7], "x": 9, "y": 2},
+ {"matrix": [2, 8], "x": 10, "y": 2},
+ {"matrix": [2, 9], "x": 11, "y": 2},
+ {"matrix": [2, 10], "x": 12, "y": 2},
+ {"matrix": [2, 11], "x": 13, "y": 2},
+ {"matrix": [2, 13], "x": 14, "y": 2, "w": 2.25},
+ {"matrix": [2, 14], "x": 16.25, "y": 2},
+ {"matrix": [3, 15], "x": 0, "y": 3},
+ {"matrix": [3, 0], "x": 1.25, "y": 3, "w": 1.25},
+ {"matrix": [3, 1], "x": 2.5, "y": 3},
+ {"matrix": [3, 2], "x": 3.5, "y": 3},
+ {"matrix": [3, 3], "x": 4.5, "y": 3},
+ {"matrix": [3, 4], "x": 5.5, "y": 3},
+ {"matrix": [3, 5], "x": 6.5, "y": 3},
+ {"matrix": [3, 6], "x": 7.5, "y": 3},
+ {"matrix": [3, 7], "x": 8.5, "y": 3},
+ {"matrix": [3, 8], "x": 9.5, "y": 3},
+ {"matrix": [3, 9], "x": 10.5, "y": 3},
+ {"matrix": [3, 10], "x": 11.5, "y": 3},
+ {"matrix": [3, 11], "x": 12.5, "y": 3},
+ {"matrix": [3, 12], "x": 13.5, "y": 3, "w": 1.75},
+ {"matrix": [3, 13], "x": 15.25, "y": 3},
+ {"matrix": [3, 14], "x": 16.25, "y": 3},
+ {"matrix": [4, 15], "x": 0, "y": 4},
+ {"matrix": [4, 0], "x": 1.25, "y": 4, "w": 1.5},
+ {"matrix": [4, 1], "x": 2.75, "y": 4},
+ {"matrix": [4, 2], "x": 3.75, "y": 4, "w": 1.5},
+ {"matrix": [4, 6], "x": 5.25, "y": 4, "w": 7},
+ {"matrix": [4, 11], "x": 12.25, "y": 4, "w": 1.5},
+ {"matrix": [4, 12], "x": 14.25, "y": 4},
+ {"matrix": [4, 13], "x": 15.25, "y": 4},
+ {"matrix": [4, 14], "x": 16.25, "y": 4}
+ ]
+ }
+ }
+}
\ No newline at end of file
diff --git a/keyboards/protozoa/event_horizon/keymaps/default/keymap.c b/keyboards/protozoa/event_horizon/keymaps/default/keymap.c
new file mode 100644
index 0000000000..ec2ecb7497
--- /dev/null
+++ b/keyboards/protozoa/event_horizon/keymaps/default/keymap.c
@@ -0,0 +1,32 @@
+/* Copyright 2022 Yiancar-Designs
+ *
+ * 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( /* Base */
+ 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_EQL, KC_BSPC, KC_DEL, KC_HOME,
+ KC_F1, 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_PGUP,
+ KC_F2, 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_PGDN,
+ KC_F3, KC_LSFT, KC_NUBS, 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_END,
+ KC_F4, KC_LCTL, KC_LGUI, KC_LALT, KC_SPC, MO(1), KC_LEFT, KC_DOWN, KC_RGHT),
+
+ [1] = LAYOUT( /* FN */
+ 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_F12, KC_DEL, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_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_VOLD, KC_MUTE, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS)
+};
diff --git a/keyboards/protozoa/event_horizon/keymaps/via/keymap.c b/keyboards/protozoa/event_horizon/keymaps/via/keymap.c
new file mode 100644
index 0000000000..86ce0fc278
--- /dev/null
+++ b/keyboards/protozoa/event_horizon/keymaps/via/keymap.c
@@ -0,0 +1,32 @@
+/* Copyright 2022 Yiancar-Designs
+ *
+ * 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( /* Base */
+ 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_EQL, KC_BSPC, KC_DEL, KC_HOME,
+ KC_F1, 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_PGUP,
+ KC_F2, 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_PGDN,
+ KC_F3, KC_LSFT, KC_NUBS, 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_END,
+ KC_F4, KC_LCTL, KC_LGUI, KC_LALT, KC_SPC, MO(1), KC_LEFT, KC_DOWN, KC_RGHT),
+
+[1] = LAYOUT( /* FN */
+ 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_F12, KC_DEL, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_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_VOLD, KC_MUTE, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS)
+};
diff --git a/keyboards/protozoa/event_horizon/keymaps/via/rules.mk b/keyboards/protozoa/event_horizon/keymaps/via/rules.mk
new file mode 100644
index 0000000000..1e5b99807c
--- /dev/null
+++ b/keyboards/protozoa/event_horizon/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
diff --git a/keyboards/protozoa/event_horizon/readme.md b/keyboards/protozoa/event_horizon/readme.md
new file mode 100644
index 0000000000..45ead77d2f
--- /dev/null
+++ b/keyboards/protozoa/event_horizon/readme.md
@@ -0,0 +1,32 @@
+# Event Horizon
+
+This is a 65% with XT column on the left layout PCB. It supports VIA.
+
+* Keyboard Maintainer: [Yiancar](http://yiancar-designs.com/) and on [GitHub](https://github.com/yiancar)
+* Hardware Supported: The trio of PCBs for the Event Horizon Keyboard using an STM32F072CB
+* Hardware Availability: https://protozoa.studio
+
+## Instructions
+
+### Build
+
+Make example for this keyboard (after setting up your build environment):
+
+ make protozoa/event_horizon: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).
+
+### Reset
+
+- Unplug
+- Hold Escape
+- Plug In
+- Unplug
+- Release Escape
+
+### Flash
+
+- Unplug
+- Hold Escape
+- Plug In
+- Flash using QMK Toolbox or CLI (`make protozoa/event_horizon::flash`)
diff --git a/keyboards/protozoa/event_horizon/rules.mk b/keyboards/protozoa/event_horizon/rules.mk
new file mode 100644
index 0000000000..0ab54aaaf7
--- /dev/null
+++ b/keyboards/protozoa/event_horizon/rules.mk
@@ -0,0 +1,2 @@
+# Wildcard to allow APM32 MCU
+DFU_SUFFIX_ARGS = -v FFFF -p FFFF