diff --git a/keyboards/mechlovin/hannah910/rev3/config.h b/keyboards/mechlovin/hannah910/rev3/config.h
index b6e539d67..5e377f4d7 100644
--- a/keyboards/mechlovin/hannah910/rev3/config.h
+++ b/keyboards/mechlovin/hannah910/rev3/config.h
@@ -3,4 +3,4 @@
#define PRODUCT_ID 0x9103
#define DEVICE_VER 0x0002
-#define RGBLED_NUM 28
\ No newline at end of file
+#define RGBLED_NUM 28
diff --git a/keyboards/mechlovin/serratus/config.h b/keyboards/mechlovin/serratus/config.h
new file mode 100644
index 000000000..055557b3a
--- /dev/null
+++ b/keyboards/mechlovin/serratus/config.h
@@ -0,0 +1,89 @@
+/*
+Copyright 2021 mechlovin
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
+*/
+
+#pragma once
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID 0x4D4C // ML
+#define PRODUCT_ID 0x0870
+#define DEVICE_VER 0x0001
+#define PRODUCT Serratus Rev.1
+/* key matrix size */
+#define MATRIX_ROWS 6
+#define MATRIX_COLS 17
+
+
+/*
+ * Keyboard Matrix Assignments
+ *
+ * Change this to how you wired your keyboard
+ * COLS: AVR pins used for columns, left to right
+ * ROWS: AVR pins used for rows, top to bottom
+ * DIODE_DIRECTION: COL2ROW = COL = Anode (+), ROW = Cathode (-, marked on diode)
+ * ROW2COL = ROW = Anode (+), COL = Cathode (-, marked on diode)
+ *
+ */
+#define MATRIX_ROW_PINS { D5, D2, D4, D3, D0, D1 }
+#define UNUSED_PINS
+
+/* COL2ROW, ROW2COL*/
+#define DIODE_DIRECTION ROW2COL
+
+#define USB_POLLING_INTERVAL_MS 1
+
+
+#define LED_NUM_LOCK_PIN D7
+#define LED_CAPS_LOCK_PIN D6
+#define LED_SCROLL_LOCK_PIN B4
+#define LED_PIN_ON_STATE 1
+
+#define BACKLIGHT_PIN B6
+#define BACKLIGHT_LEVELS 3
+#define BACKLIGHT_BREATHING
+
+#ifdef RGBLIGHT_ENABLE
+#define RGB_DI_PIN E2
+#define RGBLED_NUM 24
+#define RGBLIGHT_HUE_STEP 8
+#define RGBLIGHT_SAT_STEP 8
+#define RGBLIGHT_VAL_STEP 8
+#define RGBLIGHT_LIMIT_VAL 255 /* The maximum brightness level */
+#define RGBLIGHT_SLEEP /* If defined, the RGB lighting will be switched off when the host goes to sleep */
+/*== all animations enable ==*/
+#define RGBLIGHT_ANIMATIONS
+/*== or choose animations ==*/
+//# define RGBLIGHT_EFFECT_BREATHING
+//# define RGBLIGHT_EFFECT_RAINBOW_MOOD
+//# define RGBLIGHT_EFFECT_RAINBOW_SWIRL
+//# define RGBLIGHT_EFFECT_SNAKE
+//# define RGBLIGHT_EFFECT_KNIGHT
+//# define RGBLIGHT_EFFECT_CHRISTMAS
+//# define RGBLIGHT_EFFECT_STATIC_GRADIENT
+//# define RGBLIGHT_EFFECT_RGB_TEST
+//# define RGBLIGHT_EFFECT_ALTERNATING
+/*== customize breathing effect ==*/
+/*==== (DEFAULT) use fixed table instead of exp() and sin() ====*/
+//# define RGBLIGHT_BREATHE_TABLE_SIZE 256 // 256(default) or 128 or 64
+/*==== use exp() and sin() ====*/
+//# define RGBLIGHT_EFFECT_BREATHE_CENTER 1.85 // 1 to 2.7
+//# define RGBLIGHT_EFFECT_BREATHE_MAX 255 // 0 to 255
+#endif
+
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCE 5
diff --git a/keyboards/mechlovin/serratus/info.json b/keyboards/mechlovin/serratus/info.json
new file mode 100644
index 000000000..4c82c8374
--- /dev/null
+++ b/keyboards/mechlovin/serratus/info.json
@@ -0,0 +1,105 @@
+{
+ "keyboard_name": "Serratus",
+ "url": "",
+ "maintainer": "Mechlovin' Studio",
+ "width": 18.25,
+ "height": 6.25,
+ "layouts": {
+ "LAYOUT_all": {
+ "layout": [
+ {"label":"K00 (B0,B6)", "x":0, "y":0},
+ {"label":"K01 (B0,F4)", "x":2, "y":0},
+ {"label":"K02 (B0,C0)", "x":3, "y":0},
+ {"label":"K03 (B0,C1)", "x":4, "y":0},
+ {"label":"K04 (B0,C2)", "x":5, "y":0},
+ {"label":"K05 (B0,C3)", "x":6.5, "y":0},
+ {"label":"K06 (B0,C4)", "x":7.5, "y":0},
+ {"label":"K07 (B0,C5)", "x":8.5, "y":0},
+ {"label":"K08 (B0,C6)", "x":9.5, "y":0},
+ {"label":"K09 (B0,C7)", "x":11, "y":0},
+ {"label":"K0A (B0,D0)", "x":12, "y":0},
+ {"label":"K0B (B0,D1)", "x":13, "y":0},
+ {"label":"K0C (B0,D2)", "x":14, "y":0},
+ {"label":"K0E (B0,D4)", "x":15.25, "y":0},
+ {"label":"K0F (B0,D5)", "x":16.25, "y":0},
+ {"label":"K0G (B0,D6)", "x":17.25, "y":0},
+ {"label":"K10 (B1,B6)", "x":0, "y":1.25},
+ {"label":"K11 (B1,F4)", "x":1, "y":1.25},
+ {"label":"K12 (B1,C0)", "x":2, "y":1.25},
+ {"label":"K13 (B1,C1)", "x":3, "y":1.25},
+ {"label":"K14 (B1,C2)", "x":4, "y":1.25},
+ {"label":"K15 (B1,C3)", "x":5, "y":1.25},
+ {"label":"K16 (B1,C4)", "x":6, "y":1.25},
+ {"label":"K17 (B1,C5)", "x":7, "y":1.25},
+ {"label":"K18 (B1,C6)", "x":8, "y":1.25},
+ {"label":"K19 (B1,C7)", "x":9, "y":1.25},
+ {"label":"K1A (B1,D0)", "x":10, "y":1.25},
+ {"label":"K1B (B1,D1)", "x":11, "y":1.25},
+ {"label":"K1C (B1,D2)", "x":12, "y":1.25},
+ {"label":"K1D (B1,D3)", "x":13, "y":1.25},
+ {"label":"K0D (B0,D3)", "x":14, "y":1.25},
+ {"label":"K1E (B1,D4)", "x":15.25, "y":1.25},
+ {"label":"K1F (B1,D5)", "x":16.25, "y":1.25},
+ {"label":"K1G (B1,D6)", "x":17.25, "y":1.25},
+ {"label":"K20 (B2,B6)", "x":0, "y":2.25, "w":1.5},
+ {"label":"K21 (B2,F4)", "x":1.5, "y":2.25},
+ {"label":"K22 (B2,C0)", "x":2.5, "y":2.25},
+ {"label":"K23 (B2,C1)", "x":3.5, "y":2.25},
+ {"label":"K24 (B2,C2)", "x":4.5, "y":2.25},
+ {"label":"K25 (B2,C3)", "x":5.5, "y":2.25},
+ {"label":"K26 (B2,C4)", "x":6.5, "y":2.25},
+ {"label":"K27 (B2,C5)", "x":7.5, "y":2.25},
+ {"label":"K28 (B2,C6)", "x":8.5, "y":2.25},
+ {"label":"K29 (B2,C7)", "x":9.5, "y":2.25},
+ {"label":"K2A (B2,D0)", "x":10.5, "y":2.25},
+ {"label":"K2B (B2,D1)", "x":11.5, "y":2.25},
+ {"label":"K2C (B2,D2)", "x":12.5, "y":2.25},
+ {"label":"K2D (B2,D3)", "x":13.5, "y":2.25, "w":1.5},
+ {"label":"K2E (B2,D4)", "x":15.25, "y":2.25},
+ {"label":"K2F (B2,D5)", "x":16.25, "y":2.25},
+ {"label":"K2G (B2,D6)", "x":17.25, "y":2.25},
+ {"label":"K30 (B3,B6)", "x":0, "y":3.25, "w":1.75},
+ {"label":"K31 (B3,F4)", "x":1.75, "y":3.25},
+ {"label":"K32 (B3,C0)", "x":2.75, "y":3.25},
+ {"label":"K33 (B3,C1)", "x":3.75, "y":3.25},
+ {"label":"K34 (B3,C2)", "x":4.75, "y":3.25},
+ {"label":"K35 (B3,C3)", "x":5.75, "y":3.25},
+ {"label":"K36 (B3,C4)", "x":6.75, "y":3.25},
+ {"label":"K37 (B3,C5)", "x":7.75, "y":3.25},
+ {"label":"K38 (B3,C6)", "x":8.75, "y":3.25},
+ {"label":"K39 (B3,C7)", "x":9.75, "y":3.25},
+ {"label":"K3A (B3,D0)", "x":10.75, "y":3.25},
+ {"label":"K3B (B3,D1)", "x":11.75, "y":3.25},
+ {"label":"K3C (B3,D2)", "x":12.75, "y":3.25},
+ {"label":"K3D (B3,D3)", "x":13.75, "y":3.25, "w":1.25},
+ {"label":"K40 (B4,B6)", "x":0, "y":4.25, "w":1.25},
+ {"label":"K41 (B4,F4)", "x":1.25, "y":4.25},
+ {"label":"K42 (B4,C0)", "x":2.25, "y":4.25},
+ {"label":"K43 (B4,C1)", "x":3.25, "y":4.25},
+ {"label":"K44 (B4,C2)", "x":4.25, "y":4.25},
+ {"label":"K45 (B4,C3)", "x":5.25, "y":4.25},
+ {"label":"K46 (B4,C4)", "x":6.25, "y":4.25},
+ {"label":"K47 (B4,C5)", "x":7.25, "y":4.25},
+ {"label":"K48 (B4,C6)", "x":8.25, "y":4.25},
+ {"label":"K49 (B4,C7)", "x":9.25, "y":4.25},
+ {"label":"K4A (B4,D0)", "x":10.25, "y":4.25},
+ {"label":"K4B (B4,D1)", "x":11.25, "y":4.25},
+ {"label":"K4C (B4,D2)", "x":12.25, "y":4.25, "w":1.75},
+ {"label":"K4D (B4,D3)", "x":14, "y":4.25},
+ {"label":"K4F (B4,D5)", "x":16.25, "y":4.25},
+ {"label":"K50 (B5,B6)", "x":0, "y":5.25, "w":1.25},
+ {"label":"K51 (B5,F4)", "x":1.25, "y":5.25, "w":1.25},
+ {"label":"K52 (B5,C0)", "x":2.5, "y":5.25, "w":1.25},
+ {"label":"K56 (B5,C4)", "x":3.75, "y":5.25, "w":6.25},
+ {"label":"K5A (B5,D0)", "x":10, "y":5.25, "w":1.25},
+ {"label":"K5B (B5,D1)", "x":11.25, "y":5.25, "w":1.25},
+ {"label":"K5C (B5,D2)", "x":12.5, "y":5.25, "w":1.25},
+ {"label":"K5D (B5,D3)", "x":13.75, "y":5.25, "w":1.25},
+ {"label":"K5E (B5,D4)", "x":15.25, "y":5.25},
+ {"label":"K5F (B5,D5)", "x":16.25, "y":5.25},
+ {"label":"K5G (B5,D6)", "x":17.25, "y":5.25}
+ ]
+ }
+ }
+ ,"meta": "https://noroadsleft.github.io/kbf_qmk_converter/"
+}
diff --git a/keyboards/mechlovin/serratus/keymaps/default/keymap.c b/keyboards/mechlovin/serratus/keymaps/default/keymap.c
new file mode 100644
index 000000000..a98abef90
--- /dev/null
+++ b/keyboards/mechlovin/serratus/keymaps/default/keymap.c
@@ -0,0 +1,27 @@
+/* Copyright 2020 Team Mechlovin'
+ *
+ * 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_all(
+ KC_ESC, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6, KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12, KC_PSCR, KC_SLCK, KC_PAUS,
+ KC_GRV, 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_INS, 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_DEL, 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_SCLN, KC_QUOT, KC_HASH, KC_ENT,
+ KC_LSFT, KC_BSLS, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH, KC_LSFT, KC_LSFT, KC_UP,
+ KC_LCTL, KC_LGUI, KC_LALT, KC_SPC, KC_LALT, KC_LGUI,MO(1), KC_LCTL, KC_LEFT, KC_DOWN, KC_RGHT
+ ),
+};
diff --git a/keyboards/mechlovin/serratus/keymaps/default/readme.md b/keyboards/mechlovin/serratus/keymaps/default/readme.md
new file mode 100644
index 000000000..206166171
--- /dev/null
+++ b/keyboards/mechlovin/serratus/keymaps/default/readme.md
@@ -0,0 +1 @@
+# The default keymap for serratus
diff --git a/keyboards/mechlovin/serratus/keymaps/via/keymap.c b/keyboards/mechlovin/serratus/keymaps/via/keymap.c
new file mode 100644
index 000000000..22250ad0e
--- /dev/null
+++ b/keyboards/mechlovin/serratus/keymaps/via/keymap.c
@@ -0,0 +1,52 @@
+/* Copyright 2020 Team Mechlovin'
+ *
+ * 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_all(
+ KC_ESC, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6, KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12, KC_PSCR, KC_SLCK, KC_PAUS,
+ KC_GRV, 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_INS, 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_DEL, 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_SCLN, KC_QUOT, KC_HASH, KC_ENT,
+ KC_LSFT, KC_BSLS, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH, KC_LSFT, KC_LSFT, KC_UP,
+ KC_LCTL, KC_LGUI, KC_LALT, KC_SPC, KC_LALT, KC_LGUI, MO(1), KC_LCTL, KC_LEFT, KC_DOWN, KC_RGHT
+ ),
+ [1] = 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
+ ),
+ [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
+ ),
+ [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
+ ),
+
+};
diff --git a/keyboards/mechlovin/serratus/keymaps/via/readme.md b/keyboards/mechlovin/serratus/keymaps/via/readme.md
new file mode 100644
index 000000000..3481201f9
--- /dev/null
+++ b/keyboards/mechlovin/serratus/keymaps/via/readme.md
@@ -0,0 +1 @@
+# The via keymap for serratus
diff --git a/keyboards/mechlovin/serratus/keymaps/via/rules.mk b/keyboards/mechlovin/serratus/keymaps/via/rules.mk
new file mode 100644
index 000000000..36b7ba9cb
--- /dev/null
+++ b/keyboards/mechlovin/serratus/keymaps/via/rules.mk
@@ -0,0 +1,2 @@
+VIA_ENABLE = yes
+LTO_ENABLE = yes
diff --git a/keyboards/mechlovin/serratus/matrix.c b/keyboards/mechlovin/serratus/matrix.c
new file mode 100644
index 000000000..b1b0d2065
--- /dev/null
+++ b/keyboards/mechlovin/serratus/matrix.c
@@ -0,0 +1,388 @@
+/*
+Copyright 2012-2018 Jun Wako, Jack Humbert, Yiancar
+Copyright 2019 Evy Dekkers
+
+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
+#include
+#include "wait.h"
+#include "util.h"
+#include "matrix.h"
+#include "debounce.h"
+#include "quantum.h"
+
+#ifdef DIRECT_PINS
+static pin_t direct_pins[MATRIX_ROWS][MATRIX_COLS] = DIRECT_PINS;
+#elif (DIODE_DIRECTION == ROW2COL) || (DIODE_DIRECTION == COL2ROW)
+static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
+//static const pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
+#endif
+
+// matrix code
+
+#ifdef DIRECT_PINS
+
+static void init_pins(void) {
+ for (int row = 0; row < MATRIX_ROWS; row++) {
+ for (int col = 0; col < MATRIX_COLS; col++) {
+ pin_t pin = direct_pins[row][col];
+ if (pin != NO_PIN) {
+ setPinInputHigh(pin);
+ }
+ }
+ }
+}
+
+static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
+ matrix_row_t last_row_value = current_matrix[current_row];
+ current_matrix[current_row] = 0;
+
+ for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
+ pin_t pin = direct_pins[current_row][col_index];
+ if (pin != NO_PIN) {
+ current_matrix[current_row] |= readPin(pin) ? 0 : (MATRIX_ROW_SHIFTER << col_index);
+ }
+ }
+
+ return (last_row_value != current_matrix[current_row]);
+}
+
+#elif (DIODE_DIRECTION == ROW2COL)
+
+/* Cols 0 - 16
+ * These columns use two 74HC138 3 to 8 bit demultiplexer. B0, F1 is the enable pin, must be set high (1) to use it.
+ *
+ * col / pin: PB5 PB7 PF0 PB0 PF1 PE6
+ * 0: 0 ── 0 ── 0 1 ── 0 0
+ * ────────────────────────────────────────────
+ * 1: 0 ── 0 ── 1 1 ── 0 0
+ * ────────────────────────────────────────────
+ * 2: 0 ── 1 ── 0 1 ── 0 0
+ * ────────────────────────────────────────────
+ * 3: 0 ── 1 ── 1 1 ── 0 0
+ * ────────────────────────────────────────────
+ * 4: 1 ── 0 ── 0 1 ── 0 0
+ * ────────────────────────────────────────────
+ * 5: 1 ── 0 ── 1 1 ── 0 0
+ * ────────────────────────────────────────────
+ * 6: 1 ── 1 ── 0 1 ── 0 0
+ * ────────────────────────────────────────────
+ * 7: 1 ── 1 ── 1 1 ── 0 0
+ * ────────────────────────────────────────────
+ * 8: 0 ── 0 ── 0 0 ── 1 0
+ * ────────────────────────────────────────────
+ * 9: 0 ── 0 ── 1 0 ── 1 0
+ * ────────────────────────────────────────────
+ *10: 0 ── 1 ── 0 0 ── 1 0
+ * ────────────────────────────────────────────
+ *11: 0 ── 1 ── 1 0 ── 1 0
+ * ────────────────────────────────────────────
+ *12: 1 ── 0 ── 0 0 ── 1 0
+ * ────────────────────────────────────────────
+ *13: 1 ── 0 ── 1 0 ── 1 0
+ * ────────────────────────────────────────────
+ *14: 1 ── 1 ── 1 0 ── 1 0
+ * ────────────────────────────────────────────
+ *15: 1 ── 1 ── 0 0 ── 1 0
+ * ────────────────────────────────────────────
+ *16: 0 ── 0 ── 0 0 ── 0 1
+ *
+ */
+static void select_col(uint8_t col) {
+ switch (col) {
+ case 0:
+ writePinLow(B5);
+ writePinLow(B7);
+ writePinLow(F0);
+ writePinHigh(B0);
+ break;
+ case 1:
+ writePinLow(B5);
+ writePinLow(B7);
+ writePinHigh(F0);
+ writePinHigh(B0);
+ break;
+ case 2:
+ writePinLow(B5);
+ writePinHigh(B7);
+ writePinLow(F0);
+ writePinHigh(B0);
+ break;
+ case 3:
+ writePinLow(B5);
+ writePinHigh(B7);
+ writePinHigh(F0);
+ writePinHigh(B0);
+ break;
+ case 4:
+ writePinHigh(B5);
+ writePinLow(B7);
+ writePinLow(F0);
+ writePinHigh(B0);
+ break;
+ case 5:
+ writePinHigh(B5);
+ writePinLow(B7);
+ writePinHigh(F0);
+ writePinHigh(B0);
+ break;
+ case 6:
+ writePinHigh(B5);
+ writePinHigh(B7);
+ writePinLow(F0);
+ writePinHigh(B0);
+ break;
+ case 7:
+ writePinHigh(B5);
+ writePinHigh(B7);
+ writePinHigh(F0);
+ writePinHigh(B0);
+ break;
+ case 8:
+ writePinLow(B5);
+ writePinLow(B7);
+ writePinLow(F0);
+ writePinHigh(F1);
+ break;
+ case 9:
+ writePinLow(B5);
+ writePinLow(B7);
+ writePinHigh(F0);
+ writePinHigh(F1);
+ break;
+ case 10:
+ writePinLow(B5);
+ writePinHigh(B7);
+ writePinLow(F0);
+ writePinHigh(F1);
+ break;
+ case 11:
+ writePinLow(B5);
+ writePinHigh(B7);
+ writePinHigh(F0);
+ writePinHigh(F1);
+ break;
+ case 12:
+ writePinHigh(B5);
+ writePinLow(B7);
+ writePinLow(F0);
+ writePinHigh(F1);
+ break;
+ case 13:
+ writePinHigh(B5);
+ writePinLow(B7);
+ writePinHigh(F0);
+ writePinHigh(F1);
+ break;
+ case 14:
+ writePinHigh(B5);
+ writePinHigh(B7);
+ writePinHigh(F0);
+ writePinHigh(F1);
+ break;
+ case 15:
+ writePinHigh(B5);
+ writePinHigh(B7);
+ writePinLow(F0);
+ writePinHigh(F1);
+ break;
+ case 16:
+ writePinLow(E6);
+ break;
+ }
+}
+
+static void unselect_col(uint8_t col) {
+ switch (col) {
+ case 0:
+ writePinHigh(B5);
+ writePinHigh(B7);
+ writePinHigh(F0);
+ writePinLow(B0);
+ break;
+ case 1:
+ writePinHigh(B5);
+ writePinHigh(B7);
+ writePinLow(F0);
+ writePinLow(B0);
+ break;
+ case 2:
+ writePinHigh(B5);
+ writePinLow(B7);
+ writePinHigh(F0);
+ writePinLow(B0);
+ break;
+ case 3:
+ writePinHigh(B5);
+ writePinLow(B7);
+ writePinLow(F0);
+ writePinLow(B0);
+ break;
+ case 4:
+ writePinLow(B5);
+ writePinHigh(B7);
+ writePinHigh(F0);
+ writePinLow(B0);
+ break;
+ case 5:
+ writePinLow(B5);
+ writePinHigh(B7);
+ writePinLow(F0);
+ writePinLow(B0);
+ break;
+ case 6:
+ writePinLow(B5);
+ writePinLow(B7);
+ writePinHigh(F0);
+ writePinLow(B0);
+ break;
+ case 7:
+ writePinLow(B5);
+ writePinLow(B7);
+ writePinLow(F0);
+ writePinLow(B0);
+ break;
+ case 8:
+ writePinHigh(B5);
+ writePinHigh(B7);
+ writePinHigh(F0);
+ writePinLow(F1);
+ break;
+ case 9:
+ writePinHigh(B5);
+ writePinHigh(B7);
+ writePinLow(F0);
+ writePinLow(F1);
+ break;
+ case 10:
+ writePinHigh(B5);
+ writePinLow(B7);
+ writePinHigh(F0);
+ writePinLow(F1);
+ break;
+ case 11:
+ writePinHigh(B5);
+ writePinLow(B7);
+ writePinLow(F0);
+ writePinLow(F1);
+ break;
+ case 12:
+ writePinLow(B5);
+ writePinHigh(B7);
+ writePinHigh(F0);
+ writePinLow(F1);
+ break;
+ case 13:
+ writePinLow(B5);
+ writePinHigh(B7);
+ writePinLow(F0);
+ writePinLow(F1);
+ break;
+ case 14:
+ writePinLow(B5);
+ writePinLow(B7);
+ writePinLow(F0);
+ writePinLow(F1);
+ break;
+ case 15:
+ writePinLow(B5);
+ writePinLow(B7);
+ writePinHigh(F0);
+ writePinLow(F1);
+ break;
+ case 16:
+ writePinHigh(E6);
+ break;
+ }
+}
+
+static void unselect_cols(void) {
+ //Native
+ writePinHigh(E6);
+
+ //Demultiplexer
+ writePinLow(B0);
+ writePinLow(F1);
+ writePinHigh(B5);
+ writePinHigh(B7);
+ writePinHigh(F0);
+}
+
+static void init_pins(void) {
+ unselect_cols();
+ for (uint8_t x = 0; x < MATRIX_ROWS; x++) {
+ setPinInputHigh(row_pins[x]);
+ }
+ setPinOutput(B5);
+ setPinOutput(B7);
+ setPinOutput(F0);
+ setPinOutput(B0);
+ setPinOutput(F1);
+ setPinOutput(E6);
+}
+
+static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
+ bool matrix_changed = false;
+
+ // Select col and wait for col selecton to stabilize
+ select_col(current_col);
+ wait_us(30);
+
+ // For each row...
+ for (uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++) {
+ // Store last value of row prior to reading
+ matrix_row_t last_row_value = current_matrix[row_index];
+
+ // Check row pin state
+ if (readPin(row_pins[row_index]) == 0) {
+ // Pin LO, set col bit
+ current_matrix[row_index] |= (MATRIX_ROW_SHIFTER << current_col);
+ } else {
+ // Pin HI, clear col bit
+ current_matrix[row_index] &= ~(MATRIX_ROW_SHIFTER << current_col);
+ }
+
+ // Determine if the matrix changed state
+ if ((last_row_value != current_matrix[row_index]) && !(matrix_changed)) {
+ matrix_changed = true;
+ }
+ }
+
+ // Unselect col
+ unselect_col(current_col);
+
+ return matrix_changed;
+}
+
+#endif
+
+void matrix_init_custom(void) {
+ // initialize key pins
+ init_pins();
+}
+
+bool matrix_scan_custom(matrix_row_t current_matrix[]) {
+ bool changed = false;
+
+#if defined(DIRECT_PINS) || (DIODE_DIRECTION == ROW2COL)
+ // Set col, read rows
+ for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
+ changed |= read_rows_on_col(current_matrix, current_col);
+ }
+#endif
+
+ return changed;
+}
diff --git a/keyboards/mechlovin/serratus/readme.md b/keyboards/mechlovin/serratus/readme.md
new file mode 100644
index 000000000..5181f4169
--- /dev/null
+++ b/keyboards/mechlovin/serratus/readme.md
@@ -0,0 +1,21 @@
+# serratus
+
+
+
+A TKL PCB TypeC for Serratus keyboard.
+
+* Keyboard Maintainer: [mechlovin](https://github.com/mechlovin)
+* Hardware Supported: Serratus, Atmega32u4
+* Hardware Availability: [Geekhack GB](https://geekhack.org/index.php?topic=112768.0)
+
+Make example for this keyboard (after setting up your build environment):
+
+ make mechlovin/serratus:default
+
+Flashing example for this keyboard:
+
+ make mechlovin/serratus: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).
+
+**Reset Key:** To put the Serratus PCB into bootloader, push reset swith on the bottom of the PCB.
diff --git a/keyboards/mechlovin/serratus/rules.mk b/keyboards/mechlovin/serratus/rules.mk
new file mode 100644
index 000000000..fed40192e
--- /dev/null
+++ b/keyboards/mechlovin/serratus/rules.mk
@@ -0,0 +1,25 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = atmel-dfu
+
+# Build Options
+# change yes to no to disable
+#
+BOOTMAGIC_ENABLE = lite # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = yes # Mouse keys
+EXTRAKEY_ENABLE = yes # Audio control and System control
+CONSOLE_ENABLE = no # Console for debug
+COMMAND_ENABLE = no # Commands for debug and configuration
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = no # Breathing sleep LED during USB suspend
+# if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes # USB Nkey Rollover
+BACKLIGHT_ENABLE = yes # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = yes # Enable keyboard RGB underglow
+BLUETOOTH_ENABLE = no # Enable Bluetooth
+AUDIO_ENABLE = no # Audio output
+CUSTOM_MATRIX = lite
+
+SRC += matrix.c
diff --git a/keyboards/mechlovin/serratus/serratus.c b/keyboards/mechlovin/serratus/serratus.c
new file mode 100644
index 000000000..b396e57bf
--- /dev/null
+++ b/keyboards/mechlovin/serratus/serratus.c
@@ -0,0 +1,17 @@
+/* Copyright 2021 mechlovin
+ *
+ * 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 "serratus.h"
diff --git a/keyboards/mechlovin/serratus/serratus.h b/keyboards/mechlovin/serratus/serratus.h
new file mode 100644
index 000000000..fd04f7a22
--- /dev/null
+++ b/keyboards/mechlovin/serratus/serratus.h
@@ -0,0 +1,35 @@
+/* Copyright 2021 mechlovin
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#pragma once
+
+#include "quantum.h"
+
+#define LAYOUT_all( \
+ K00, K01, K02, K03, K04, K05, K06, K07, K08, K09, K0A, K0B, K0C, K0E, K0F, K0G, \
+ K10, K11, K12, K13, K14, K15, K16, K17, K18, K19, K1A, K1B, K1C, K1D, K0D, 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, \
+ K40, K41, K42, K43, K44, K45, K46, K47, K48, K49, K4A, K4B, K4C, K4D, K4F, \
+ K50, K51, K52, K56, K5A, K5B, K5C, 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, KC_NO, KC_NO, KC_NO }, \
+ { K40, K41, K42, K43, K44, K45, K46, K47, K48, K49, K4A, K4B, K4C, K4D, KC_NO, K4F, KC_NO }, \
+ { K50, K51, K52, KC_NO, KC_NO, KC_NO, K56, KC_NO, KC_NO, KC_NO, K5A, K5B, K5C, K5D, K5E, K5F, K5G }, \
+}