[Keyboard] Acheron Athena support (#16818)

Co-authored-by: Drashna Jaelre <drashna@live.com>

21 files changed, 777 insertions, 0 deletions

diff --git a/keyboards/acheron/athena/alpha/alpha.c b/keyboards/acheron/athena/alpha/alpha.c
new file mode 100644
index 0000000000..645e0ea635
--- /dev/null
+++ b/keyboards/acheron/athena/alpha/alpha.c
@@ -0,0 +1,45 @@
+/* Copyright 2020 Gondolindrim
+ *
+ * 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/>.
+ */
+
+#include "alpha.h"
+
+
+void board_init(void) {
+    setPinInput(B6);
+    setPinInput(B7);
+}
+
+void keyboard_post_init_kb(void){
+ // Defining the backlight pin (A6) as an floating (no pullup or pulldown resistor) opendrain output pin
+    palSetLineMode(BACKLIGHT_PIN, PAL_MODE_ALTERNATE(BACKLIGHT_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN | PAL_STM32_OSPEED_HIGHEST | PAL_STM32_PUPDR_FLOATING);
+}
+
+#define LED_PIN_ON_STATE 1
+void led_init_ports(void) {
+    palSetLineMode(LED_CAPS_LOCK_PIN, PAL_MODE_OUTPUT_OPENDRAIN | PAL_STM32_PUPDR_FLOATING);
+}
+
+bool led_update_kb(led_t led_state) {
+    bool res = led_update_user(led_state);
+    #ifdef CAPSLOCK_INDICATOR
+    if(res) {
+        writePin(LED_CAPS_LOCK_PIN, !led_state.caps_lock);
+    }
+    #else
+    writePin(LED_CAPS_LOCK_PIN, 0);
+    #endif
+    return res;
+}
diff --git a/keyboards/acheron/athena/alpha/alpha.h b/keyboards/acheron/athena/alpha/alpha.h
new file mode 100644
index 0000000000..99b9ba6e32
--- /dev/null
+++ b/keyboards/acheron/athena/alpha/alpha.h
@@ -0,0 +1,46 @@
+/* Copyright 2020 Gondolindrim
+ *
+ * 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 ___ KC_NO
+
+#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.
+ *
+ * The second converts the arguments into a two-dimensional array which
+ * represents the switch matrix.
+ */
+
+#define LAYOUT_all( \
+    K00, K01, K02, K03, K04, K05, K06, K07, K08, K09, K0A, K0B, K0C, K0D, K0E, K0F, K0G, \
+    K10, K11, K12, K13, K14, K15, K16, K17, K18, K19, K1A, K1B, K1C, K1D, K1E, K1F, K1G, \
+    K20, K21, K22, K23, K24, K25, K26, K27, K28, K29, K2A, K2B, K2C, K2D, K2E, K2F, K2G, \
+    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, K4B, K4C, K4D,      K4F,      \
+    K50, K51, K52,                K56,           K59, K5A, K5B,      K5D, K5E, K5F, K5G  \
+)\
+{\
+    { K00, K01, K02, K03, K04, K05, K06, K07, K08, K09, K0A, K0B, K0C, K0D, K0E, K0F, K0G }, \
+    { K10, K11, K12, K13, K14, K15, K16, K17, K18, K19, K1A, K1B, K1C, K1D, K1E, K1F, K1G }, \
+    { K20, K21, K22, K23, K24, K25, K26, K27, K28, K29, K2A, K2B, K2C, K2D, K2E, K2F, K2G }, \
+    { 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, K4B, K4C, K4D, ___, K4F, ___ }, \
+    { K50, K51, K52, ___, ___, ___, K56, ___, ___, K59, K5A, K5B, ___, K5D, K5E, K5F, K5G }\
+}
diff --git a/keyboards/acheron/athena/alpha/config.h b/keyboards/acheron/athena/alpha/config.h
new file mode 100644
index 0000000000..3e0316377d
--- /dev/null
+++ b/keyboards/acheron/athena/alpha/config.h
@@ -0,0 +1,76 @@
+/*
+Copyright 2020 Gondolindrim
+
+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
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID 0xAC11
+#define PRODUCT_ID 0x6584 // AT fot Athena
+#define DEVICE_VER 0x0001 
+#define MANUFACTURER AcheronProject
+#define PRODUCT Athena
+
+#define MATRIX_ROWS 6
+#define MATRIX_COLS 17
+
+#define MATRIX_COL_PINS { A8 , B14, B12, B10, B1 , B0 , A5 , A4 , A3 , A2 , A1 , A0 , C15, A7 , B4 , B3 , A15 }
+#define MATRIX_ROW_PINS { B9 , C13, B8 , B5 , A14 , C14 }
+
+#define DIODE_DIRECTION COL2ROW
+
+#define DEBOUNCE 5
+
+#define LOCKING_SUPPORT_ENABLE
+#define LOCKING_RESYNC_ENABLE
+
+#define BACKLIGHT_PIN           A6
+#define BACKLIGHT_PWM_DRIVER    PWMD3
+#define BACKLIGHT_PWM_CHANNEL   1
+#define BACKLIGHT_PAL_MODE      2
+#define BACKLIGHT_LEVELS 20
+#define BACKLIGHT_BREATHING
+#define BREATHING_PERIOD 5
+#define BACKLIGHT_ON_STATE 0
+
+#define STM32_HSECLK 8000000
+
+#define RGB_DI_PIN B15
+#define RGBLED_NUM 34
+#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
+#define RGBLIGHT_EFFECT_TWINKLE
+
+#define WS2812_PWM_COMPLEMENTARY_OUTPUT
+#define WS2812_PWM_DRIVER PWMD1
+#define WS2812_PWM_CHANNEL 3
+#define WS2812_PWM_PAL_MODE 1
+#define WS2812_DMA_STREAM STM32_DMA2_STREAM5
+#define WS2812_DMA_CHANNEL 6
+
+#define LED_CAPS_LOCK_PIN A10
+
+// If this is defined, the caps lock LED will turn on and off according to the state of caps lock. If not, the LED will shine like all other LEDs despite the caps lock state.
+#define CAPSLOCK_INDICATOR
diff --git a/keyboards/acheron/athena/alpha/halconf.h b/keyboards/acheron/athena/alpha/halconf.h
new file mode 100644
index 0000000000..ebdb4954a1
--- /dev/null
+++ b/keyboards/acheron/athena/alpha/halconf.h
@@ -0,0 +1,24 @@
+/* Copyright 2020 QMK
+ *
+ * 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 HAL_USE_PWM TRUE
+#define HAL_USE_PAL TRUE
+
+#define HAL_USE_I2C TRUE
+
+#include_next <halconf.h>
diff --git a/keyboards/acheron/athena/alpha/keymaps/default/keymap.c b/keyboards/acheron/athena/alpha/keymaps/default/keymap.c
new file mode 100644
index 0000000000..e1a0c16808
--- /dev/null
+++ b/keyboards/acheron/athena/alpha/keymaps/default/keymap.c
@@ -0,0 +1,51 @@
+/* Copyright 2020 Gondolindrim
+ *
+ * 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/>.
+ */
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+[0] = LAYOUT_all( /* Base */
+    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_F13 , KC_PSCR, KC_SCRL, KC_PAUS,
+    KC_TILD , 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_BSPC, KC_HOME, KC_PGUP,
+    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_INS,  KC_END,  KC_PGDN,
+    KC_CAPS,  KC_A,    KC_S,    KC_D,    KC_F,   KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_COLN, KC_QUOT, KC_NUHS,  KC_ENT , KC_DEL,
+    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,  MO(1),            KC_UP,  
+    KC_LCTRL, KC_LGUI, KC_LALT,                           KC_SPC,                    KC_RALT, KC_RGUI, MO(1),   KC_RCTL,           KC_LEFT, KC_DOWN,  KC_RGHT
+),
+[1] = LAYOUT_all(
+    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, 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_TRNS
+),
+[2] = LAYOUT_all(
+    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_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
+),
+[3] = LAYOUT_all(
+    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_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/acheron/athena/alpha/keymaps/via/keymap.c b/keyboards/acheron/athena/alpha/keymaps/via/keymap.c
new file mode 100644
index 0000000000..e1a0c16808
--- /dev/null
+++ b/keyboards/acheron/athena/alpha/keymaps/via/keymap.c
@@ -0,0 +1,51 @@
+/* Copyright 2020 Gondolindrim
+ *
+ * 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/>.
+ */
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+[0] = LAYOUT_all( /* Base */
+    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_F13 , KC_PSCR, KC_SCRL, KC_PAUS,
+    KC_TILD , 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_BSPC, KC_HOME, KC_PGUP,
+    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_INS,  KC_END,  KC_PGDN,
+    KC_CAPS,  KC_A,    KC_S,    KC_D,    KC_F,   KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_COLN, KC_QUOT, KC_NUHS,  KC_ENT , KC_DEL,
+    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,  MO(1),            KC_UP,  
+    KC_LCTRL, KC_LGUI, KC_LALT,                           KC_SPC,                    KC_RALT, KC_RGUI, MO(1),   KC_RCTL,           KC_LEFT, KC_DOWN,  KC_RGHT
+),
+[1] = LAYOUT_all(
+    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, 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_TRNS
+),
+[2] = LAYOUT_all(
+    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_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
+),
+[3] = LAYOUT_all(
+    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_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/acheron/athena/alpha/keymaps/via/rules.mk b/keyboards/acheron/athena/alpha/keymaps/via/rules.mk
new file mode 100644
index 0000000000..1e5b99807c
--- /dev/null
+++ b/keyboards/acheron/athena/alpha/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
diff --git a/keyboards/acheron/athena/alpha/mcuconf.h b/keyboards/acheron/athena/alpha/mcuconf.h
new file mode 100644
index 0000000000..35d7e95f57
--- /dev/null
+++ b/keyboards/acheron/athena/alpha/mcuconf.h
@@ -0,0 +1,44 @@
+/* Copyright 2020 QMK
+ *
+ * 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
+
+#include_next <mcuconf.h>
+#undef STM32_PLLM_VALUE
+#undef STM32_PLLN_VALUE
+#undef STM32_PLLP_VALUE
+#undef STM32_PLLQ_VALUE
+#undef STM32_PPRE1
+#undef STM32_PPRE2
+
+#define STM32_PLLM_VALUE                    4
+#define STM32_PLLN_VALUE                    96
+#define STM32_PLLP_VALUE                    2
+#define STM32_PLLQ_VALUE                    4
+#define STM32_PPRE1                         STM32_PPRE1_DIV2
+#define STM32_PPRE2                         STM32_PPRE2_DIV1
+
+#undef STM32_I2C_USE_I2C1
+#define STM32_I2C_USE_I2C1 TRUE
+
+#undef STM32_PWM_USE_ADVANCED
+#define STM32_PWM_USE_ADVANCED TRUE
+
+#undef STM32_PWM_USE_TIM3
+#define STM32_PWM_USE_TIM3 TRUE
+
+#undef STM32_PWM_USE_TIM1
+#define STM32_PWM_USE_TIM1 TRUE
diff --git a/keyboards/acheron/athena/alpha/rules.mk b/keyboards/acheron/athena/alpha/rules.mk
new file mode 100644
index 0000000000..246db1d2e5
--- /dev/null
+++ b/keyboards/acheron/athena/alpha/rules.mk
@@ -0,0 +1,23 @@
+MCU = STM32F411
+
+# Bootloader selection
+BOOTLOADER = stm32-dfu
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = yes     # Enable Bootmagic Lite
+MOUSEKEY_ENABLE = no       # Mouse keys
+EXTRAKEY_ENABLE = yes      # Audio control and System control
+CONSOLE_ENABLE = no        # Console for debug
+COMMAND_ENABLE = no        # Commands for debug and configuration
+NKRO_ENABLE = yes          # Enable N-Key Rollover
+BACKLIGHT_ENABLE = yes     # Enable keyboard backlight functionality
+BACKLIGHT_DRIVER = pwm
+RGBLIGHT_ENABLE = yes      # Enable keyboard RGB underglow
+AUDIO_ENABLE = no          # Audio output
+LTO_ENABLE = yes
+ENCODER_ENABLE = no
+
+# Enter lower-power sleep mode when on the ChibiOS idle thread
+OPT_DEFS += -DCORTEX_ENABLE_WFI_IDLE=TRUE
diff --git a/keyboards/acheron/athena/athena.c b/keyboards/acheron/athena/athena.c
new file mode 100644
index 0000000000..aa5fae94f6
--- /dev/null
+++ b/keyboards/acheron/athena/athena.c
@@ -0,0 +1,16 @@
+/* Copyright 2022 Alvaro "Gondolindrim" Volpato
+ *
+ * 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/>.
+ */
+#include "athena.h"
diff --git a/keyboards/acheron/athena/athena.h b/keyboards/acheron/athena/athena.h
new file mode 100644
index 0000000000..0dd55ba8f1
--- /dev/null
+++ b/keyboards/acheron/athena/athena.h
@@ -0,0 +1,24 @@
+/* Copyright 2022 Alvaro "Gondolindrim" Volpato
+ *
+ * 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
+
+#include "quantum.h"
+
+#if defined(KEYBOARD_acheron_athena_alpha)
+    #include "alpha.h"
+#elif defined(KEYBOARD_acheron_athena_beta)
+    #include "beta.h"
+#endif
diff --git a/keyboards/acheron/athena/beta/beta.c b/keyboards/acheron/athena/beta/beta.c
new file mode 100644
index 0000000000..06d40d1493
--- /dev/null
+++ b/keyboards/acheron/athena/beta/beta.c
@@ -0,0 +1,35 @@
+/* Copyright 2020 Gondolindrim
+ *
+ * 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/>.
+ */
+
+#include "beta.h"
+
+
+void board_init(void) {
+    setPinInput(B6);
+    setPinInput(B7);
+}
+
+bool led_update_kb(led_t led_state) {
+    bool res = led_update_user(led_state);
+    #ifdef CAPSLOCK_INDICATOR
+    if(res) {
+        writePin(LED_CAPS_LOCK_PIN, led_state.caps_lock);
+    }
+    #else
+    writePin(LED_CAPS_LOCK_PIN, 0);
+    #endif
+    return res;
+}
diff --git a/keyboards/acheron/athena/beta/beta.h b/keyboards/acheron/athena/beta/beta.h
new file mode 100644
index 0000000000..99b9ba6e32
--- /dev/null
+++ b/keyboards/acheron/athena/beta/beta.h
@@ -0,0 +1,46 @@
+/* Copyright 2020 Gondolindrim
+ *
+ * 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 ___ KC_NO
+
+#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.
+ *
+ * The second converts the arguments into a two-dimensional array which
+ * represents the switch matrix.
+ */
+
+#define LAYOUT_all( \
+    K00, K01, K02, K03, K04, K05, K06, K07, K08, K09, K0A, K0B, K0C, K0D, K0E, K0F, K0G, \
+    K10, K11, K12, K13, K14, K15, K16, K17, K18, K19, K1A, K1B, K1C, K1D, K1E, K1F, K1G, \
+    K20, K21, K22, K23, K24, K25, K26, K27, K28, K29, K2A, K2B, K2C, K2D, K2E, K2F, K2G, \
+    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, K4B, K4C, K4D,      K4F,      \
+    K50, K51, K52,                K56,           K59, K5A, K5B,      K5D, K5E, K5F, K5G  \
+)\
+{\
+    { K00, K01, K02, K03, K04, K05, K06, K07, K08, K09, K0A, K0B, K0C, K0D, K0E, K0F, K0G }, \
+    { K10, K11, K12, K13, K14, K15, K16, K17, K18, K19, K1A, K1B, K1C, K1D, K1E, K1F, K1G }, \
+    { K20, K21, K22, K23, K24, K25, K26, K27, K28, K29, K2A, K2B, K2C, K2D, K2E, K2F, K2G }, \
+    { 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, K4B, K4C, K4D, ___, K4F, ___ }, \
+    { K50, K51, K52, ___, ___, ___, K56, ___, ___, K59, K5A, K5B, ___, K5D, K5E, K5F, K5G }\
+}
diff --git a/keyboards/acheron/athena/beta/config.h b/keyboards/acheron/athena/beta/config.h
new file mode 100644
index 0000000000..559f501f95
--- /dev/null
+++ b/keyboards/acheron/athena/beta/config.h
@@ -0,0 +1,76 @@
+/*
+Copyright 2020 Gondolindrim
+
+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
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID 0xAC11
+#define PRODUCT_ID 0x6585 // AT+1 for Athena rev.  Beta
+#define DEVICE_VER 0x0002 // Rev. Beta
+#define MANUFACTURER AcheronProject
+#define PRODUCT Athena rev Beta
+
+#define MATRIX_ROWS 6
+#define MATRIX_COLS 17
+
+#define MATRIX_COL_PINS { C7 , C6 , B14, B12, B10, B1 , C4 , A7 , A6 , A5 , A4 , A3 , A2 , C5 , A10, A8 , C9 }
+#define MATRIX_ROW_PINS { C11, C12, C10, A15, C0 , A1 }
+
+#define DIODE_DIRECTION COL2ROW
+
+#define DEBOUNCE 5
+
+#define LOCKING_SUPPORT_ENABLE
+#define LOCKING_RESYNC_ENABLE
+
+#define BACKLIGHT_PIN           B0
+#define BACKLIGHT_PWM_DRIVER    PWMD3
+#define BACKLIGHT_PWM_CHANNEL   3
+#define BACKLIGHT_PAL_MODE      2
+#define BACKLIGHT_LEVELS 20
+#define BACKLIGHT_BREATHING
+#define BREATHING_PERIOD 5
+
+#define STM32_HSECLK 8000000
+
+#define RGB_DI_PIN B15
+#define RGBLED_NUM 34
+#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
+#define RGBLIGHT_EFFECT_TWINKLE
+#define RGBLIGHT_DEFAULT_MODE RGBLIGHT_MODE_RAINBOW_SWIRL+5
+
+#define WS2812_PWM_COMPLEMENTARY_OUTPUT
+#define WS2812_PWM_DRIVER PWMD1
+#define WS2812_PWM_CHANNEL 3
+#define WS2812_PWM_PAL_MODE 1
+#define WS2812_DMA_STREAM STM32_DMA2_STREAM5
+#define WS2812_DMA_CHANNEL 6
+
+#define LED_CAPS_LOCK_PIN C8
+
+// If this is defined, the caps lock LED will turn on and off according to the state of caps lock. If not, the LED will shine like all other LEDs despite the caps lock state.
+#define CAPSLOCK_INDICATOR
diff --git a/keyboards/acheron/athena/beta/halconf.h b/keyboards/acheron/athena/beta/halconf.h
new file mode 100644
index 0000000000..ebdb4954a1
--- /dev/null
+++ b/keyboards/acheron/athena/beta/halconf.h
@@ -0,0 +1,24 @@
+/* Copyright 2020 QMK
+ *
+ * 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 HAL_USE_PWM TRUE
+#define HAL_USE_PAL TRUE
+
+#define HAL_USE_I2C TRUE
+
+#include_next <halconf.h>
diff --git a/keyboards/acheron/athena/beta/keymaps/default/keymap.c b/keyboards/acheron/athena/beta/keymaps/default/keymap.c
new file mode 100644
index 0000000000..e1a0c16808
--- /dev/null
+++ b/keyboards/acheron/athena/beta/keymaps/default/keymap.c
@@ -0,0 +1,51 @@
+/* Copyright 2020 Gondolindrim
+ *
+ * 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/>.
+ */
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+[0] = LAYOUT_all( /* Base */
+    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_F13 , KC_PSCR, KC_SCRL, KC_PAUS,
+    KC_TILD , 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_BSPC, KC_HOME, KC_PGUP,
+    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_INS,  KC_END,  KC_PGDN,
+    KC_CAPS,  KC_A,    KC_S,    KC_D,    KC_F,   KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_COLN, KC_QUOT, KC_NUHS,  KC_ENT , KC_DEL,
+    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,  MO(1),            KC_UP,  
+    KC_LCTRL, KC_LGUI, KC_LALT,                           KC_SPC,                    KC_RALT, KC_RGUI, MO(1),   KC_RCTL,           KC_LEFT, KC_DOWN,  KC_RGHT
+),
+[1] = LAYOUT_all(
+    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, 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_TRNS
+),
+[2] = LAYOUT_all(
+    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_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
+),
+[3] = LAYOUT_all(
+    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_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/acheron/athena/beta/keymaps/via/keymap.c b/keyboards/acheron/athena/beta/keymaps/via/keymap.c
new file mode 100644
index 0000000000..e1a0c16808
--- /dev/null
+++ b/keyboards/acheron/athena/beta/keymaps/via/keymap.c
@@ -0,0 +1,51 @@
+/* Copyright 2020 Gondolindrim
+ *
+ * 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/>.
+ */
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+[0] = LAYOUT_all( /* Base */
+    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_F13 , KC_PSCR, KC_SCRL, KC_PAUS,
+    KC_TILD , 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_BSPC, KC_HOME, KC_PGUP,
+    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_INS,  KC_END,  KC_PGDN,
+    KC_CAPS,  KC_A,    KC_S,    KC_D,    KC_F,   KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_COLN, KC_QUOT, KC_NUHS,  KC_ENT , KC_DEL,
+    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,  MO(1),            KC_UP,  
+    KC_LCTRL, KC_LGUI, KC_LALT,                           KC_SPC,                    KC_RALT, KC_RGUI, MO(1),   KC_RCTL,           KC_LEFT, KC_DOWN,  KC_RGHT
+),
+[1] = LAYOUT_all(
+    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, 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_TRNS
+),
+[2] = LAYOUT_all(
+    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_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
+),
+[3] = LAYOUT_all(
+    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_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/acheron/athena/beta/keymaps/via/rules.mk b/keyboards/acheron/athena/beta/keymaps/via/rules.mk
new file mode 100644
index 0000000000..1e5b99807c
--- /dev/null
+++ b/keyboards/acheron/athena/beta/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
diff --git a/keyboards/acheron/athena/beta/mcuconf.h b/keyboards/acheron/athena/beta/mcuconf.h
new file mode 100644
index 0000000000..2f3b3e812a
--- /dev/null
+++ b/keyboards/acheron/athena/beta/mcuconf.h
@@ -0,0 +1,44 @@
+/* Copyright 2020 QMK
+ *
+ * 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
+
+#include_next <mcuconf.h>
+#undef STM32_PLLM_VALUE
+#undef STM32_PLLN_VALUE
+#undef STM32_PLLP_VALUE
+#undef STM32_PLLQ_VALUE
+#undef STM32_PPRE1
+#undef STM32_PPRE2
+
+#define STM32_PLLM_VALUE                    4
+#define STM32_PLLN_VALUE                    168
+#define STM32_PLLP_VALUE                    4
+#define STM32_PLLQ_VALUE                    7
+#define STM32_PPRE1                         STM32_PPRE1_DIV2
+#define STM32_PPRE2                         STM32_PPRE2_DIV1
+
+#undef STM32_I2C_USE_I2C1
+#define STM32_I2C_USE_I2C1 TRUE
+
+#undef STM32_PWM_USE_ADVANCED
+#define STM32_PWM_USE_ADVANCED TRUE
+
+#undef STM32_PWM_USE_TIM3
+#define STM32_PWM_USE_TIM3 TRUE
+
+#undef STM32_PWM_USE_TIM1
+#define STM32_PWM_USE_TIM1 TRUE
diff --git a/keyboards/acheron/athena/beta/rules.mk b/keyboards/acheron/athena/beta/rules.mk
new file mode 100644
index 0000000000..388b1e6a96
--- /dev/null
+++ b/keyboards/acheron/athena/beta/rules.mk
@@ -0,0 +1,23 @@
+MCU = STM32F401
+
+# Bootloader selection
+BOOTLOADER = stm32-dfu
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = yes     # Enable Bootmagic Lite
+MOUSEKEY_ENABLE = no       # Mouse keys
+EXTRAKEY_ENABLE = yes      # Audio control and System control
+CONSOLE_ENABLE = no        # Console for debug
+COMMAND_ENABLE = no        # Commands for debug and configuration
+NKRO_ENABLE = yes          # Enable N-Key Rollover
+BACKLIGHT_ENABLE = yes     # Enable keyboard backlight functionality
+BACKLIGHT_DRIVER = pwm
+RGBLIGHT_ENABLE = yes      # Enable keyboard RGB underglow
+AUDIO_ENABLE = no          # Audio output
+LTO_ENABLE = yes
+ENCODER_ENABLE = no
+
+# Enter lower-power sleep mode when on the ChibiOS idle thread
+OPT_DEFS += -DCORTEX_ENABLE_WFI_IDLE=TRUE
diff --git a/keyboards/acheron/athena/readme.md b/keyboards/acheron/athena/readme.md
new file mode 100644
index 0000000000..1c091ada01
--- /dev/null
+++ b/keyboards/acheron/athena/readme.md
@@ -0,0 +1,25 @@
+# Acheron Athena QMK firmware
+
+![athena](https://acheronproject.com/images/athena/IMG_9653.jpg)
+
+The Athena is Acheron Project's open-source, freely available tenkeyless (TKL) keyboard Printed Circuit Boards (PCB) which features:
+
+- Per-key LED lighting
+- Solderable MX switches support
+- Wide variety of layouts including Tsangan bottom row, split right and left shifts, ISO enter, split backspace, F13 top row
+
+* Keyboard Maintainer: [Gondolindrim](https://github.com/Gondolindrim)
+* Hardware Supported: open-source PCB using the [Joker template](https://acheronproject.com/joker_mcus/joker/). First units were manufactured using STM32F4x1 microcontroller;
+* Hardware Availability: these PCBs are open-source so you can manufacture them yourself or order them from a factory. See the [project's documentation](https://acheronproject.com/pcbs/athena/athena/) for more information.
+
+In order to flash this PCB, first build the default layout (after setting up your build environment):
+
+    make acheron/athena/<revision>:default
+
+Where `revision` is the revision of your PCB. Two revisions were prototyped and sold: _Alpha_ and _Beta_. Look into the label on the PCB's back to see what revision is yours. Ready-to-use binaries for the default and the VIA layouts are available in the release pages of the [project's repository](https://github.com/AcheronProject/Athena).
+
+After building or downloading the firmware, put the PCB into DFU mode by holding the reset button for at least five seconds and upload the firmware onto the microcontroller through a utility like `dfu-util` or QMK Toolbox. Alternatively, you can build and flash using:
+
+    make acheron/athena/<revision>: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).