bastardkb/charybdis: add support for Charybdis (4x6 and 3x5) (#15333)

13 files changed, 762 insertions, 0 deletions

diff --git a/keyboards/bastardkb/charybdis/4x6/4x6.c b/keyboards/bastardkb/charybdis/4x6/4x6.c
new file mode 100644
index 0000000000..6cd8fffee7
--- /dev/null
+++ b/keyboards/bastardkb/charybdis/4x6/4x6.c
@@ -0,0 +1,94 @@
+/*
+ * Copyright 2020 Christopher Courtney <drashna@live.com> (@drashna)
+ * Copyright 2021 Quentin LEBASTARD <qlebastard@gmail.com>
+ * Copyright 2021 Charly Delay <charly@codesink.dev> (@0xcharly)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Publicw 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 "4x6.h"
+
+// clang-format off
+#ifdef RGB_MATRIX_ENABLE
+/**
+ * \brief LEDs index.
+ *
+ * ╭────────────────────────╮                 ╭────────────────────────╮
+ *    0   7   8  15  16  20                     49  45  44  37  36  29
+ * ├────────────────────────┤                 ├────────────────────────┤
+ *    1   6   9  14  17  21                     50  46  43  38  35  30
+ * ├────────────────────────┤                 ├────────────────────────┤
+ *    2   5  10  13  18  22                     51  47  42  39  34  31
+ * ├────────────────────────┤                 ├────────────────────────┤
+ *    3   4  11  12  19  23                     52  48  41  40  33  32
+ * ╰────────────────────────╯                 ╰────────────────────────╯
+ *                       26  27  28     53  54  XX
+ *                           25  24     55  XX
+ *                     ╰────────────╯ ╰────────────╯
+ */
+led_config_t g_led_config = { {
+    /* Key Matrix to LED index. */
+    // Left split.
+    {      0,      7,      8,     15,     16,     20 }, // Num row
+    {      1,      6,      9,     14,     17,     21 }, // Top row
+    {      2,      5,     10,     13,     18,     22 }, // Middle row
+    {      3,      4,     11,     12,     19,     23 }, // Bottom row
+    { NO_LED,     28,     24,     26,     27,     25 }, // Thumb cluster
+    // Right split.
+    {     29,     36,     37,     44,     45,     49 }, // Num row
+    {     30,     35,     38,     43,     46,     50 }, // Top row
+    {     31,     34,     39,     42,     47,     51 }, // Middle row
+    {     32,     33,     40,     41,     48,     52 }, // Bottom row
+    { NO_LED,     53,     55,     54, NO_LED, NO_LED }, // Thumb cluster
+}, {
+    /* LED index to physical position. */
+    // Left split.
+    /* index=0  */ {   0,   0 }, {   0,  12 }, {   0,  24 }, {   0,  36 }, // col 1 (left most)
+    /* index=4  */ {  16,  36 }, {  16,  24 }, {  16,  12 }, {  16,   0 }, // col 2
+    /* index=8  */ {  32,   0 }, {  32,  12 }, {  32,  24 }, {  32,  36 },
+    /* index=12 */ {  48,  36 }, {  48,  24 }, {  48,  12 }, {  48,   0 },
+    /* index=16 */ {  64,   0 }, {  64,  12 }, {  64,  24 }, {  64,  36 },
+    /* index=20 */ {  80,   0 }, {  80,  12 }, {  80,  24 }, {  80,  36 },
+    /* index=24 */ { 112,  64 }, {  96,  64 }, {  80,  52 },
+    /* index=27 */ {  96,  52 }, { 112,  52 },
+    // Right split.
+    /* index=29 */ { 224,   0 }, { 224,  12 }, { 224,  24 }, { 224,  36 }, // col 12 (right most)
+    /* index=33 */ { 208,  36 }, { 208,  24 }, { 208,  12 }, { 208,   0 }, // col 11
+    /* index=37 */ { 192,   0 }, { 192,  12 }, { 192,  24 }, { 192,  36 },
+    /* index=41 */ { 176,  36 }, { 176,  24 }, { 176,  12 }, { 176,   0 },
+    /* index=45 */ { 160,   0 }, { 160,  12 }, { 160,  24 }, { 160,  36 },
+    /* index=49 */ { 144,   0 }, { 144,  12 }, { 144,  24 }, { 144,  36 },
+    /* index=53 */ { 112,  52 }, { 128,  64 }, { 112,  64 },
+}, {
+    /* LED index to flag. */
+    // Left split.
+    /* index=0  */ LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, // col 1
+    /* index=4  */ LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, // col 2
+    /* index=8  */ LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT,
+    /* index=12 */ LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT,
+    /* index=16 */ LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT,
+    /* index=20 */ LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT,
+    /* index=24 */ LED_FLAG_MODIFIER, LED_FLAG_MODIFIER, LED_FLAG_MODIFIER, // Thumb cluster top
+    /* index=27 */ LED_FLAG_MODIFIER, LED_FLAG_MODIFIER,                    // Thumb cluster bottom
+    // Right split.
+    /* index=29 */ LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, // col 12
+    /* index=33 */ LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, // col 11
+    /* index=37 */ LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT,
+    /* index=41 */ LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT,
+    /* index=45 */ LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT,
+    /* index=49 */ LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT,
+    /* index=53 */ LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, LED_FLAG_KEYLIGHT, // Thumb cluster
+} };
+#endif
+// clang-format on
diff --git a/keyboards/bastardkb/charybdis/4x6/4x6.h b/keyboards/bastardkb/charybdis/4x6/4x6.h
new file mode 100644
index 0000000000..c26d356d69
--- /dev/null
+++ b/keyboards/bastardkb/charybdis/4x6/4x6.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2021 Quentin LEBASTARD <qlebastard@gmail.com>
+ * Copyright 2021 Charly Delay <charly@codesink.dev> (@0xcharly)
+ *
+ * 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 "charybdis.h"
+
+// clang-format off
+#define LAYOUT_charybdis_4x6(                                     \
+  k00, k01, k02, k03, k04, k05,     k55, k54, k53, k52, k51, k50, \
+  k10, k11, k12, k13, k14, k15,     k65, k64, k63, k62, k61, k60, \
+  k20, k21, k22, k23, k24, k25,     k75, k74, k73, k72, k71, k70, \
+  k30, k31, k32, k33, k34, k35,     k85, k84, k83, k82, k81, k80, \
+                 k43, k44, k41,     k91, k93,                     \
+                      k45, k42,     k95                           \
+)                                                                 \
+{                                                                 \
+  {   k00,   k01,   k02,   k03,   k04,   k05 },                   \
+  {   k10,   k11,   k12,   k13,   k14,   k15 },                   \
+  {   k20,   k21,   k22,   k23,   k24,   k25 },                   \
+  {   k30,   k31,   k32,   k33,   k34,   k35 },                   \
+  { KC_NO,   k41,   k42,   k43,   k44,   k45 },                   \
+  {   k50,   k51,   k52,   k53,   k54,   k55 },                   \
+  {   k60,   k61,   k62,   k63,   k64,   k65 },                   \
+  {   k70,   k71,   k72,   k73,   k74,   k75 },                   \
+  {   k80,   k81,   k82,   k83,   k84,   k85 },                   \
+  { KC_NO,   k91, KC_NO,   k93, KC_NO,   k95 },                   \
+}
+// clang-format on
diff --git a/keyboards/bastardkb/charybdis/4x6/config.h b/keyboards/bastardkb/charybdis/4x6/config.h
new file mode 100644
index 0000000000..f00fb382f6
--- /dev/null
+++ b/keyboards/bastardkb/charybdis/4x6/config.h
@@ -0,0 +1,84 @@
+/*
+ * Copyright 2021 Quentin LEBASTARD <qlebastard@gmail.com>
+ * Copyright 2021 Charly Delay <charly@codesink.dev> (@0xcharly)
+ *
+ * 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 VENDOR_ID 0xA8F8
+#define PRODUCT_ID 0x1833
+#define DEVICE_VER 0x0001
+#define MANUFACTURER Bastard Keyboards
+#define PRODUCT Charybdis
+
+/* Key matrix configuration. */
+
+// Rows are doubled-up.
+#define MATRIX_ROWS 10
+#define MATRIX_COLS 6
+
+// Wiring configuration for each half.
+#define MATRIX_ROW_PINS \
+    { F1, B7, C6, D4, B5 }
+#define MATRIX_COL_PINS \
+    { D5, C7, F0, D7, E6, B4 }
+
+#define MATRIX_ROW_PINS_RIGHT \
+    { D5, F0, C6, D4, B5 }
+#define MATRIX_COL_PINS_RIGHT \
+    { F1, C7, B7, D7, E6, B4 }
+
+#define DIODE_DIRECTION ROW2COL
+
+#define ROTATIONAL_TRANSFORM_ANGLE -25
+
+/* Handedness. */
+#define MASTER_RIGHT
+
+/* Bootmagic Lite configuration. */
+#define BOOTMAGIC_LITE_ROW 0
+#define BOOTMAGIC_LITE_COLUMN 0
+#define BOOTMAGIC_LITE_ROW_RIGHT 5
+#define BOOTMAGIC_LITE_COLUMN_RIGHT 0
+
+/* serial.c configuration (for split keyboard) */
+#define SOFT_SERIAL_PIN D2
+
+/* Set 0 if debouncing isn't needed */
+#define DEBOUNCE 5
+
+/* Disable action features. */
+#define NO_ACTION_MACRO     // Disable old-style macro handling.
+#define NO_ACTION_FUNCTION  // Disable old-style function handling.
+
+/* PMW3360 settings. */
+#define PMW3360_CS_PIN B0
+
+#define RGB_DI_PIN D3
+#define RGBLED_NUM 56
+#define RGBLED_SPLIT \
+    { 29, 27 }
+
+/* RGB matrix support. */
+#ifdef RGB_MATRIX_ENABLE
+#    define SPLIT_TRANSPORT_MIRROR
+#    define DRIVER_LED_TOTAL RGBLED_NUM
+#    define RGB_MATRIX_SPLIT RGBLED_SPLIT
+#    define RGB_MATRIX_MAXIMUM_BRIGHTNESS 50
+#    define RGB_MATRIX_STARTUP_VAL RGB_MATRIX_MAXIMUM_BRIGHTNESS
+#    define RGB_DISABLE_WHEN_USB_SUSPENDED
+#    define RGB_MATRIX_KEYPRESSES
+#endif
diff --git a/keyboards/bastardkb/charybdis/4x6/info.json b/keyboards/bastardkb/charybdis/4x6/info.json
new file mode 100644
index 0000000000..956dfe88f5
--- /dev/null
+++ b/keyboards/bastardkb/charybdis/4x6/info.json
@@ -0,0 +1,67 @@
+{
+    "keyboard_name": "Charybdis",
+    "url": "https://www.bastardkb.com",
+    "maintainer": "Quentin Lebastard",
+    "layouts": {
+        "LAYOUT_charybdis_4x6": {
+            "layout": [
+                { "label": "L00", "x": 0, "y": 0 },
+                { "label": "L01", "x": 1, "y": 0 },
+                { "label": "L02", "x": 2, "y": 0 },
+                { "label": "L03", "x": 3, "y": 0 },
+                { "label": "L04", "x": 4, "y": 0 },
+                { "label": "L05", "x": 5, "y": 0 },
+                { "label": "R00", "x": 11, "y": 0 },
+                { "label": "R01", "x": 12, "y": 0 },
+                { "label": "R02", "x": 13, "y": 0 },
+                { "label": "R03", "x": 14, "y": 0 },
+                { "label": "R04", "x": 15, "y": 0 },
+                { "label": "R05", "x": 16, "y": 0 },
+                { "label": "L10", "x": 0, "y": 1 },
+                { "label": "L11", "x": 1, "y": 1 },
+                { "label": "L12", "x": 2, "y": 1 },
+                { "label": "L13", "x": 3, "y": 1 },
+                { "label": "L14", "x": 4, "y": 1 },
+                { "label": "L15", "x": 5, "y": 1 },
+                { "label": "R10", "x": 11, "y": 1 },
+                { "label": "R11", "x": 12, "y": 1 },
+                { "label": "R12", "x": 13, "y": 1 },
+                { "label": "R13", "x": 14, "y": 1 },
+                { "label": "R14", "x": 15, "y": 1 },
+                { "label": "R15", "x": 16, "y": 1 },
+                { "label": "L20", "x": 0, "y": 2 },
+                { "label": "L21", "x": 1, "y": 2 },
+                { "label": "L22", "x": 2, "y": 2 },
+                { "label": "L23", "x": 3, "y": 2 },
+                { "label": "L24", "x": 4, "y": 2 },
+                { "label": "L25", "x": 5, "y": 2 },
+                { "label": "R20", "x": 11, "y": 2 },
+                { "label": "R21", "x": 12, "y": 2 },
+                { "label": "R22", "x": 13, "y": 2 },
+                { "label": "R23", "x": 14, "y": 2 },
+                { "label": "R24", "x": 15, "y": 2 },
+                { "label": "R25", "x": 16, "y": 2 },
+                { "label": "L30", "x": 0, "y": 3 },
+                { "label": "L31", "x": 1, "y": 3 },
+                { "label": "L32", "x": 2, "y": 3 },
+                { "label": "L33", "x": 3, "y": 3 },
+                { "label": "L34", "x": 4, "y": 3 },
+                { "label": "L35", "x": 5, "y": 3 },
+                { "label": "R30", "x": 11, "y": 3 },
+                { "label": "R31", "x": 12, "y": 3 },
+                { "label": "R32", "x": 13, "y": 3 },
+                { "label": "R33", "x": 14, "y": 3 },
+                { "label": "R34", "x": 15, "y": 3 },
+                { "label": "R35", "x": 16, "y": 3 },
+                { "label": "L40", "x": 5, "y": 4 },
+                { "label": "L41", "x": 6, "y": 4 },
+                { "label": "L42", "x": 7, "y": 4 },
+                { "label": "R40", "x": 9, "y": 4 },
+                { "label": "R41", "x": 10, "y": 4 },
+                { "label": "L50", "x": 6, "y": 5 },
+                { "label": "L51", "x": 7, "y": 5 },
+                { "label": "R50", "x": 9, "y": 5 }
+            ]
+        }
+    }
+}
diff --git a/keyboards/bastardkb/charybdis/4x6/keymaps/default/config.h b/keyboards/bastardkb/charybdis/4x6/keymaps/default/config.h
new file mode 100644
index 0000000000..383b3f9dc3
--- /dev/null
+++ b/keyboards/bastardkb/charybdis/4x6/keymaps/default/config.h
@@ -0,0 +1,39 @@
+/**
+ * Copyright 2021 Charly Delay <charly@codesink.dev> (@0xcharly)
+ *
+ * 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
+
+/* RGB Matrix. */
+
+#ifdef RGB_MATRIX_ENABLE
+// Limit maximum brightness to keep power consumption reasonable, and avoid
+// disconnects.
+#    undef RGB_MATRIX_MAXIMUM_BRIGHTNESS
+#    define RGB_MATRIX_MAXIMUM_BRIGHTNESS 64
+
+// Rainbow swirl as startup mode.
+#    define ENABLE_RGB_MATRIX_CYCLE_LEFT_RIGHT
+#    define RGB_MATRIX_STARTUP_MODE RGB_MATRIX_CYCLE_LEFT_RIGHT
+
+// Slow swirl at startup.
+#    define RGB_MATRIX_STARTUP_SPD 32
+
+// Startup values.
+#    define RGB_MATRIX_STARTUP_HUE 0
+#    define RGB_MATRIX_STARTUP_SAT 255
+#    define RGB_MATRIX_STARTUP_VAL RGB_MATRIX_MAXIMUM_BRIGHTNESS
+#    define RGB_MATRIX_STARTUP_HSV RGB_MATRIX_STARTUP_HUE, RGB_MATRIX_STARTUP_SAT, RGB_MATRIX_STARTUP_VAL
+#endif  // RGB_MATRIX_ENABLE
diff --git a/keyboards/bastardkb/charybdis/4x6/keymaps/default/keymap.c b/keyboards/bastardkb/charybdis/4x6/keymaps/default/keymap.c
new file mode 100644
index 0000000000..de8eed9c03
--- /dev/null
+++ b/keyboards/bastardkb/charybdis/4x6/keymaps/default/keymap.c
@@ -0,0 +1,75 @@
+/**
+ * Copyright 2021 Charly Delay <charly@codesink.dev> (@0xcharly)
+ *
+ * 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
+
+enum charybdis_keymap_layers {
+    LAYER_BASE = 0,
+    LAYER_LOWER,
+    LAYER_RAISE,
+};
+
+#define LOWER MO(LAYER_LOWER)
+#define RAISE MO(LAYER_RAISE)
+
+// clang-format off
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  [LAYER_BASE] = LAYOUT_charybdis_4x6(
+  // ╭──────────────────────────────────────────────────────╮ ╭──────────────────────────────────────────────────────╮
+        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_BSLS,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       KC_LSFT,    KC_A,    KC_S,    KC_D,    KC_F,    KC_G,       KC_H,    KC_J,    KC_K,    KC_L, KC_SCLN, KC_QUOT,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       KC_LCTL,    KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,       KC_N,    KC_M, KC_COMM,  KC_DOT, KC_SLSH, KC_LALT,
+  // ╰──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────╯
+                                   KC_LGUI, KC_SPC,   LOWER,      RAISE,  KC_ENT,
+                                           KC_LALT, KC_BSPC,     KC_DEL
+  //                            ╰───────────────────────────╯ ╰──────────────────╯
+  ),
+
+  [LAYER_LOWER] = LAYOUT_charybdis_4x6(
+  // ╭──────────────────────────────────────────────────────╮ ╭──────────────────────────────────────────────────────╮
+       KC_TILD, KC_EXLM,   KC_AT, KC_HASH,  KC_DLR, KC_PERC,    KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_UNDS,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       RGB_MOD, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,    KC_LBRC,   KC_P7,   KC_P8,   KC_P9, KC_RBRC, XXXXXXX,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       RGB_TOG, KC_LGUI, KC_LALT, KC_LCTL, KC_LSFT, XXXXXXX,    KC_PPLS,   KC_P4,   KC_P5,   KC_P6, KC_PMNS, KC_PEQL,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+      RGB_RMOD, XXXXXXX, XXXXXXX, XXXXXXX, EEP_RST,   RESET,    KC_PAST,   KC_P1,   KC_P2,   KC_P3, KC_PSLS, KC_PDOT,
+  // ╰──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────╯
+                                  XXXXXXX, XXXXXXX, _______,    XXXXXXX, _______,
+                                           XXXXXXX, XXXXXXX,      KC_P0
+  //                            ╰───────────────────────────╯ ╰──────────────────╯
+  ),
+
+  [LAYER_RAISE] = LAYOUT_charybdis_4x6(
+  // ╭──────────────────────────────────────────────────────╮ ╭──────────────────────────────────────────────────────╮
+        KC_F12,   KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,      KC_F6,   KC_F7,   KC_F8,   KC_F9,  KC_F10,  KC_F11,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       KC_MNXT, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,    XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, KC_VOLU,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       KC_MPLY, KC_LEFT,   KC_UP, KC_DOWN, KC_RGHT, XXXXXXX,    XXXXXXX, KC_RSFT, KC_RCTL, KC_RALT, KC_RGUI, KC_MUTE,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       KC_MPRV, KC_HOME, KC_PGUP, KC_PGDN,  KC_END, XXXXXXX,      RESET, EEP_RST, XXXXXXX, XXXXXXX, XXXXXXX, KC_VOLD,
+  // ╰──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────╯
+                                  _______, _______, XXXXXXX,    _______, XXXXXXX,
+                                           _______, _______,    XXXXXXX
+  //                            ╰───────────────────────────╯ ╰──────────────────╯
+  ),
+};
+// clang-format on
diff --git a/keyboards/bastardkb/charybdis/4x6/keymaps/default/readme.md b/keyboards/bastardkb/charybdis/4x6/keymaps/default/readme.md
new file mode 100644
index 0000000000..23a85e54d5
--- /dev/null
+++ b/keyboards/bastardkb/charybdis/4x6/keymaps/default/readme.md
@@ -0,0 +1,7 @@
+# Charybdis (4x6) default keymap
+
+> :bulb: Have a look at the [`via` keymap](../via) for a more feature-rich layout.
+
+The Charydbis (4x6) default keymap is inspired from the original [Dactyl Manuform](../../../../../handwired/dactyl_manuform) default keymap.
+
+This layout supports RGB matrix. However, due to space constraints on the MCU, only a limited number of effect can be enabled at once. Look at the `config.h` file and enable your favorite effect.
diff --git a/keyboards/bastardkb/charybdis/4x6/keymaps/via/config.h b/keyboards/bastardkb/charybdis/4x6/keymaps/via/config.h
new file mode 100644
index 0000000000..75eb2240f3
--- /dev/null
+++ b/keyboards/bastardkb/charybdis/4x6/keymaps/via/config.h
@@ -0,0 +1,72 @@
+/**
+ * Copyright 2021 Charly Delay <charly@codesink.dev> (@0xcharly)
+ *
+ * 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
+
+#ifdef VIA_ENABLE
+/* VIA configuration. */
+#    define DYNAMIC_KEYMAP_LAYER_COUNT 4
+#endif  // VIA_ENABLE
+
+/* Disable unused features. */
+#define NO_ACTION_ONESHOT
+
+#ifndef TAPPING_TERM
+/**
+ * \brief Configure the global tapping term (default: 200ms).
+ *
+ * If you have a lot of accidental mod activations, crank up the tapping term.
+ *
+ * See docs.qmk.fm/using-qmk/software-features/tap_hold#tapping-term
+ */
+#    define TAPPING_TERM 200
+#endif  // TAPPING_TERM
+
+/* Charybdis-specific features. */
+
+#ifdef POINTING_DEVICE_ENABLE
+// Enable pointer acceleration, which increases the speed by ~2x for large
+// displacement, while maintaining 1x speed for slow movements.
+// - `CHARYBDIS_POINTER_ACCELERATION_FACTOR`
+#    define CHARYBDIS_POINTER_ACCELERATION_ENABLE
+
+// Automatically enable the pointer layer when moving the trackball.  See also:
+// - `CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_TIMEOUT_MS`
+// - `CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_THRESHOLD`
+// #define CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_ENABLE
+#endif  // POINTING_DEVICE_ENABLE
+
+/* RGB Matrix. */
+
+#ifdef RGB_MATRIX_ENABLE
+// Limit maximum brightness to keep power consumption reasonable, and avoid
+// disconnects.
+#    undef RGB_MATRIX_MAXIMUM_BRIGHTNESS
+#    define RGB_MATRIX_MAXIMUM_BRIGHTNESS 64
+
+// Rainbow swirl as startup mode.
+#    define ENABLE_RGB_MATRIX_CYCLE_LEFT_RIGHT
+#    define RGB_MATRIX_STARTUP_MODE RGB_MATRIX_CYCLE_LEFT_RIGHT
+
+// Slow swirl at startup.
+#    define RGB_MATRIX_STARTUP_SPD 32
+
+// Startup values.
+#    define RGB_MATRIX_STARTUP_HUE 0
+#    define RGB_MATRIX_STARTUP_SAT 255
+#    define RGB_MATRIX_STARTUP_VAL RGB_MATRIX_MAXIMUM_BRIGHTNESS
+#    define RGB_MATRIX_STARTUP_HSV RGB_MATRIX_STARTUP_HUE, RGB_MATRIX_STARTUP_SAT, RGB_MATRIX_STARTUP_VAL
+#endif  // RGB_MATRIX_ENABLE
diff --git a/keyboards/bastardkb/charybdis/4x6/keymaps/via/keymap.c b/keyboards/bastardkb/charybdis/4x6/keymaps/via/keymap.c
new file mode 100644
index 0000000000..d53d580a48
--- /dev/null
+++ b/keyboards/bastardkb/charybdis/4x6/keymaps/via/keymap.c
@@ -0,0 +1,166 @@
+/**
+ * Copyright 2021 Charly Delay <charly@codesink.dev> (@0xcharly)
+ *
+ * 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
+
+#ifdef CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_ENABLE
+#    include "timer.h"
+#endif  // CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_ENABLE
+
+enum charybdis_keymap_layers {
+    LAYER_BASE = 0,
+    LAYER_LOWER,
+    LAYER_RAISE,
+    LAYER_POINTER,
+};
+
+/** \brief Automatically enable sniping-mode on the pointer layer. */
+#define CHARYBDIS_AUTO_SNIPING_ON_LAYER LAYER_POINTER
+
+#ifdef CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_ENABLE
+static uint16_t auto_pointer_layer_timer = 0;
+
+#    ifndef CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_TIMEOUT_MS
+#        define CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_TIMEOUT_MS 1000
+#    endif  // CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_TIMEOUT_MS
+
+#    ifndef CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_THRESHOLD
+#        define CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_THRESHOLD 8
+#    endif  // CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_THRESHOLD
+#endif      // CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_ENABLE
+
+#define LOWER MO(LAYER_LOWER)
+#define RAISE MO(LAYER_RAISE)
+#define PT_Z LT(LAYER_POINTER, KC_Z)
+#define PT_SLSH LT(LAYER_POINTER, KC_SLSH)
+
+// clang-format off
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  [LAYER_BASE] = LAYOUT_charybdis_4x6(
+  // ╭──────────────────────────────────────────────────────╮ ╭──────────────────────────────────────────────────────╮
+        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_BSLS,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       KC_LSFT,    KC_A,    KC_S,    KC_D,    KC_F,    KC_G,       KC_H,    KC_J,    KC_K,    KC_L, KC_SCLN, KC_QUOT,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       KC_LCTL,    PT_Z,    KC_X,    KC_C,    KC_V,    KC_B,       KC_N,    KC_M, KC_COMM,  KC_DOT, PT_SLSH, KC_LALT,
+  // ╰──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────╯
+                                   KC_LGUI, KC_SPC,   LOWER,      RAISE,  KC_ENT,
+                                           KC_LALT, KC_BSPC,     KC_DEL
+  //                            ╰───────────────────────────╯ ╰──────────────────╯
+  ),
+
+  [LAYER_LOWER] = LAYOUT_charybdis_4x6(
+  // ╭──────────────────────────────────────────────────────╮ ╭──────────────────────────────────────────────────────╮
+       KC_TILD, KC_EXLM,   KC_AT, KC_HASH,  KC_DLR, KC_PERC,    KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_UNDS,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       RGB_MOD, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,    KC_LBRC,   KC_P7,   KC_P8,   KC_P9, KC_RBRC, XXXXXXX,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       RGB_TOG, KC_LGUI, KC_LALT, KC_LCTL, KC_LSFT, XXXXXXX,    KC_PPLS,   KC_P4,   KC_P5,   KC_P6, KC_PMNS, KC_PEQL,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+      RGB_RMOD, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,    KC_PAST,   KC_P1,   KC_P2,   KC_P3, KC_PSLS, KC_PDOT,
+  // ╰──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────╯
+                                  XXXXXXX, XXXXXXX, _______,    XXXXXXX, _______,
+                                           XXXXXXX, XXXXXXX,      KC_P0
+  //                            ╰───────────────────────────╯ ╰──────────────────╯
+  ),
+
+  [LAYER_RAISE] = LAYOUT_charybdis_4x6(
+  // ╭──────────────────────────────────────────────────────╮ ╭──────────────────────────────────────────────────────╮
+        KC_F12,   KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,      KC_F6,   KC_F7,   KC_F8,   KC_F9,  KC_F10,  KC_F11,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       KC_MNXT, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,    XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, KC_VOLU,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       KC_MPLY, KC_LEFT,   KC_UP, KC_DOWN, KC_RGHT, XXXXXXX,    XXXXXXX, KC_RSFT, KC_RCTL, KC_RALT, KC_RGUI, KC_MUTE,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       KC_MPRV, KC_HOME, KC_PGUP, KC_PGDN,  KC_END, XXXXXXX,    XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, KC_VOLD,
+  // ╰──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────╯
+                                  _______, _______, XXXXXXX,    _______, XXXXXXX,
+                                           _______, _______,    XXXXXXX
+  //                            ╰───────────────────────────╯ ╰──────────────────╯
+  ),
+
+  [LAYER_POINTER] = LAYOUT_charybdis_4x6(
+  // ╭──────────────────────────────────────────────────────╮ ╭──────────────────────────────────────────────────────╮
+       XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,    XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, DPI_MOD, S_D_MOD,    S_D_MOD, DPI_MOD, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       XXXXXXX, KC_LGUI, KC_LALT, KC_LCTL, KC_LSFT, XXXXXXX,    XXXXXXX, KC_RSFT, KC_RCTL, KC_RALT, KC_RGUI, XXXXXXX,
+  // ├──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────┤
+       XXXXXXX, _______, DRGSCRL, SNIPING, EEP_RST,   RESET,      RESET, EEP_RST, SNIPING, DRGSCRL, _______, XXXXXXX,
+  // ╰──────────────────────────────────────────────────────┤ ├──────────────────────────────────────────────────────╯
+                                  KC_BTN2, KC_BTN1, KC_BTN3,    KC_BTN3, KC_BTN1,
+                                           XXXXXXX, KC_BTN2,    KC_BTN2
+  //                            ╰───────────────────────────╯ ╰──────────────────╯
+  ),
+};
+// clang-format on
+
+#ifdef POINTING_DEVICE_ENABLE
+#    ifdef CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_ENABLE
+report_mouse_t pointing_device_task_user(report_mouse_t mouse_report) {
+    if (abs(mouse_report.x) > CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_THRESHOLD || abs(mouse_report.y) > CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_THRESHOLD) {
+        if (auto_pointer_layer_timer == 0) {
+            layer_on(LAYER_POINTER);
+#        ifdef RGB_MATRIX_ENABLE
+            rgb_matrix_mode_noeeprom(RGB_MATRIX_NONE);
+            rgb_matrix_sethsv_noeeprom(HSV_GREEN);
+#        endif  // RGB_MATRIX_ENABLE
+        }
+        auto_pointer_layer_timer = timer_read();
+    }
+    return mouse_report;
+}
+
+void matrix_scan_kb(void) {
+    if (auto_pointer_layer_timer != 0 && TIMER_DIFF_16(timer_read(), auto_pointer_layer_timer) >= CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_TIMEOUT_MS) {
+        auto_pointer_layer_timer = 0;
+        layer_off(LAYER_POINTER);
+#        ifdef RGB_MATRIX_ENABLE
+        rgb_matrix_mode_noeeprom(RGB_MATRIX_STARTUP_MODE);
+#        endif  // RGB_MATRIX_ENABLE
+    }
+    matrix_scan_user();
+}
+#    endif  // CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_ENABLE
+
+#    ifdef CHARYBDIS_AUTO_SNIPING_ON_LAYER
+layer_state_t layer_state_set_kb(layer_state_t state) {
+    state = layer_state_set_user(state);
+    charybdis_set_pointer_sniping_enabled(layer_state_cmp(state, CHARYBDIS_AUTO_SNIPING_ON_LAYER));
+    return state;
+}
+#    endif  // CHARYBDIS_AUTO_SNIPING_ON_LAYER
+#endif      // POINTING_DEVICE_ENABLE
+
+#ifdef RGB_MATRIX_ENABLE
+// Forward-declare this helper function since it is defined in rgb_matrix.c.
+void rgb_matrix_update_pwm_buffers(void);
+#endif
+
+void shutdown_user(void) {
+#ifdef RGBLIGHT_ENABLE
+    rgblight_enable_noeeprom();
+    rgblight_mode_noeeprom(1);
+    rgblight_setrgb_red();
+#endif  // RGBLIGHT_ENABLE
+#ifdef RGB_MATRIX_ENABLE
+    rgb_matrix_set_color_all(RGB_RED);
+    rgb_matrix_update_pwm_buffers();
+#endif  // RGB_MATRIX_ENABLE
+}
diff --git a/keyboards/bastardkb/charybdis/4x6/keymaps/via/readme.md b/keyboards/bastardkb/charybdis/4x6/keymaps/via/readme.md
new file mode 100644
index 0000000000..ad2634ef0c
--- /dev/null
+++ b/keyboards/bastardkb/charybdis/4x6/keymaps/via/readme.md
@@ -0,0 +1,61 @@
+# Charybdis (4x6) `via` keymap
+
+The Charydbis (4x6) `via` keymap is inspired from the original [Dactyl Manuform](../../../../../handwired/dactyl_manuform) default keymap, with some features and changes specific to the Charybdis.
+
+This layout supports RGB matrix. However, due to space constraints on the MCU, only a limited number of effect can be enabled at once. Look at the `config.h` file and enable your favorite effect.
+
+## Customizing the keymap
+
+### Dynamic DPI scaling
+
+Use the following keycodes to change the default DPI:
+
+-   `POINTER_DEFAULT_DPI_FORWARD`: increases the DPI; decreases when shifted;
+-   `POINTER_DEFAULT_DPI_REVERSE`: decreases the DPI; increases when shifted.
+
+There's a maximum of 16 possible values for the sniping mode DPI. See the [Charybdis documentation](../../README.md) for more information.
+
+Use the following keycodes to change the sniping mode DPI:
+
+-   `POINTER_SNIPING_DPI_FORWARD`: increases the DPI; decreases when shifted;
+-   `POINTER_SNIPING_DPI_REVERSE`: decreases the DPI; increases when shifted.
+
+There's a maximum of 4 possible values for the sniping mode DPI. See the [Charybdis documentation](../../README.md) for more information.
+
+### Drag-scroll
+
+Use the `DRAGSCROLL_MODE` keycode to enable drag-scroll on hold. Use the `DRAGSCROLL_TOGGLE` keycode to enable/disable drag-scroll on key press.
+
+### Sniping
+
+Use the `SNIPING_MODE` keycode to enable sniping mode on hold. Use the `SNIPING_TOGGLE` keycode to enable/disable sniping mode on key press.
+
+Change the value of `CHARYBDIS_AUTO_SNIPING_ON_LAYER` to automatically enable sniping mode on layer change. By default, sniping mode is enabled on the pointer layer:
+
+```c
+#define CHARYBDIS_AUTO_SNIPING_ON_LAYER LAYER_POINTER
+```
+
+### Auto pointer layer
+
+The pointer layer can be automatically enabled when moving the trackball. To enable or disable this behavior, add or remove the following define:
+
+```c
+#define CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_ENABLE
+```
+
+By default, the layer is turned off 1 second after the last registered trackball movement:
+
+```c
+#define CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_TIMEOUT_MS 1000
+```
+
+The trigger sensibility can also be tuned. The lower the value, the more sensible the trigger:
+
+```c
+#define CHARYBDIS_AUTO_POINTER_LAYER_TRIGGER_THRESHOLD 8
+```
+
+## Layout
+
+![Keymap layout (generated with keyboard-layout-editor.com)](https://i.imgur.com/qI7phR7.png)
diff --git a/keyboards/bastardkb/charybdis/4x6/keymaps/via/rules.mk b/keyboards/bastardkb/charybdis/4x6/keymaps/via/rules.mk
new file mode 100644
index 0000000000..1e5b99807c
--- /dev/null
+++ b/keyboards/bastardkb/charybdis/4x6/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
diff --git a/keyboards/bastardkb/charybdis/4x6/readme.md b/keyboards/bastardkb/charybdis/4x6/readme.md
new file mode 100644
index 0000000000..af2396cd6d
--- /dev/null
+++ b/keyboards/bastardkb/charybdis/4x6/readme.md
@@ -0,0 +1,15 @@
+# Charybdis (4x6)
+
+An ergonomic keyboard with integrated trackball.
+
+The Charybdis is available in 4x6 and 3x5 form factor at [bastardkb.com](https://bastardkb.com).
+
+## Keymaps
+
+### [`default`](keymaps/default)
+
+A simple QWERTY layout with 3 layers.
+
+### [`via`](keymaps/via)
+
+Same as the [default](keymaps/default) keymap, but with VIA support.
diff --git a/keyboards/bastardkb/charybdis/4x6/rules.mk b/keyboards/bastardkb/charybdis/4x6/rules.mk
new file mode 100644
index 0000000000..e137f5d4cc
--- /dev/null
+++ b/keyboards/bastardkb/charybdis/4x6/rules.mk
@@ -0,0 +1,37 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = atmel-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 = no            # Enable N-Key Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+AUDIO_ENABLE = no           # Audio output
+
+AUDIO_SUPPORTED = no        # Audio is not supported.
+RGB_MATRIX_SUPPORTED = yes  # RGB matrix is supported and enabled by default.
+RGBLIGHT_SUPPORTED = yes    # RGB underglow is supported, but not enabled by default.
+RGB_MATRIX_ENABLE = yes     # Enable keyboard RGB matrix functionality
+RGB_MATRIX_DRIVER = WS2812
+
+# Enable link-time optimization by default.  The Charybdis packs a lot of
+# features (RGB, Via, trackball) in a small atmega32u4 package.
+LTO_ENABLE = yes
+
+# Charybdis is a split 4x6 keyboard with a maximum of 5 thumb keys (3 on the
+# trackball side).
+SPLIT_KEYBOARD = yes
+
+POINTING_DEVICE_ENABLE = yes # Enable trackball
+POINTING_DEVICE_DRIVER = pmw3360
+# https://qmk.fm/changes/2018-11-16-use-a-single-endpoint-for-hid-reports
+MOUSE_SHARED_EP = no # Unify multiple HID interfaces into a single Endpoint