diff --git a/keyboards/b_sides/rev41lp/config.h b/keyboards/b_sides/rev41lp/config.h
new file mode 100644
index 0000000000..33506eeb1b
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/config.h
@@ -0,0 +1,188 @@
+/*
+Copyright 2021 cyril279
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
+*/
+
+#pragma once
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID 0xFEED
+#define PRODUCT_ID 0x5F10
+#define DEVICE_VER 0x0001
+#define MANUFACTURER cyril279
+#define PRODUCT rev41lp
+#define DESCRIPTION A 41-key keyboard
+
+/* key matrix size */
+#define MATRIX_ROWS 7
+#define MATRIX_COLS 6
+
+/*
+ * 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 { F4, B2, F5, B3, F6, B1, F7 }
+#define MATRIX_COL_PINS { D4, C6, D7, E6, B4, B5 }
+#define UNUSED_PINS
+
+/* COL2ROW, ROW2COL*/
+#define DIODE_DIRECTION COL2ROW
+
+#define BACKLIGHT_PIN B6
+#define BACKLIGHT_ON_STATE 1
+#define BACKLIGHT_BREATHING
+/* number of backlight levels */
+#define BACKLIGHT_LEVELS 7
+#define BACKLIGHT_LIMIT_VAL 150
+
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCE 5
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+/* If defined, GRAVE_ESC will always act as ESC when CTRL is held.
+ * This is userful for the Windows task manager shortcut (ctrl+shift+esc).
+ */
+// #define GRAVE_ESC_CTRL_OVERRIDE
+
+/*
+ * Force NKRO
+ *
+ * Force NKRO (nKey Rollover) to be enabled by default, regardless of the saved
+ * state in the bootmagic EEPROM settings. (Note that NKRO must be enabled in the
+ * makefile for this to work.)
+ *
+ * If forced on, NKRO can be disabled via magic key (default = LShift+RShift+N)
+ * until the next keyboard reset.
+ *
+ * NKRO may prevent your keystrokes from being detected in the BIOS, but it is
+ * fully operational during normal computer usage.
+ *
+ * For a less heavy-handed approach, enable NKRO via magic key (LShift+RShift+N)
+ * or via bootmagic (hold SPACE+N while plugging in the keyboard). Once set by
+ * bootmagic, NKRO mode will always be enabled until it is toggled again during a
+ * power-up.
+ *
+ */
+//#define FORCE_NKRO
+
+/*
+ * Magic Key Options
+ *
+ * Magic keys are hotkey commands that allow control over firmware functions of
+ * the keyboard. They are best used in combination with the HID Listen program,
+ * found here: https://www.pjrc.com/teensy/hid_listen.html
+ *
+ * The options below allow the magic key functionality to be changed. This is
+ * useful if your keyboard/keypad is missing keys and you want magic key support.
+ *
+ */
+
+/* key combination for magic key command */
+/* defined by default; to change, uncomment and set to the combination you want */
+// #define IS_COMMAND() (get_mods() == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)))
+
+/* control how magic key switches layers */
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_FKEYS true
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_NKEYS true
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_CUSTOM false
+
+/* override magic key keymap */
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_FKEYS
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_NKEYS
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_CUSTOM
+//#define MAGIC_KEY_HELP H
+//#define MAGIC_KEY_HELP_ALT SLASH
+//#define MAGIC_KEY_DEBUG D
+//#define MAGIC_KEY_DEBUG_MATRIX X
+//#define MAGIC_KEY_DEBUG_KBD K
+//#define MAGIC_KEY_DEBUG_MOUSE M
+//#define MAGIC_KEY_VERSION V
+//#define MAGIC_KEY_STATUS S
+//#define MAGIC_KEY_CONSOLE C
+//#define MAGIC_KEY_LAYER0 0
+//#define MAGIC_KEY_LAYER0_ALT GRAVE
+//#define MAGIC_KEY_LAYER1 1
+//#define MAGIC_KEY_LAYER2 2
+//#define MAGIC_KEY_LAYER3 3
+//#define MAGIC_KEY_LAYER4 4
+//#define MAGIC_KEY_LAYER5 5
+//#define MAGIC_KEY_LAYER6 6
+//#define MAGIC_KEY_LAYER7 7
+//#define MAGIC_KEY_LAYER8 8
+//#define MAGIC_KEY_LAYER9 9
+//#define MAGIC_KEY_BOOTLOADER B
+//#define MAGIC_KEY_BOOTLOADER_ALT ESC
+//#define MAGIC_KEY_LOCK CAPS
+//#define MAGIC_KEY_EEPROM E
+//#define MAGIC_KEY_EEPROM_CLEAR BSPACE
+//#define MAGIC_KEY_NKRO N
+//#define MAGIC_KEY_SLEEP_LED Z
+
+/*
+ * Feature disable options
+ * These options are also useful to firmware size reduction.
+ */
+
+/* disable debug print */
+//#define NO_DEBUG
+
+/* disable print */
+//#define NO_PRINT
+
+/* disable action features */
+//#define NO_ACTION_LAYER
+//#define NO_ACTION_TAPPING
+//#define NO_ACTION_ONESHOT
+//#define NO_ACTION_MACRO
+//#define NO_ACTION_FUNCTION
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+ - MIDI notes can be sent when in Music mode is on
+*/
+//#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+ - MIDI notes can be added to the keymap
+ - Octave shift and transpose
+ - Virtual sustain, portamento, and modulation wheel
+ - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 1
+
+/* Bootmagic Lite key configuration */
+// #define BOOTMAGIC_LITE_ROW 0
+// #define BOOTMAGIC_LITE_COLUMN 0
diff --git a/keyboards/b_sides/rev41lp/keymaps/default/keymap.c b/keyboards/b_sides/rev41lp/keymaps/default/keymap.c
new file mode 100644
index 0000000000..b45361806d
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/keymaps/default/keymap.c
@@ -0,0 +1,61 @@
+/* Copyright 2021 cyril279
+ *
+ * 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
+
+enum layer_names {
+ _BASE,
+ _LOWER,
+ _RAISE,
+ _ADJUST
+};
+
+#define LOWER MO(_LOWER)
+#define RAISE MO(_RAISE)
+#define ADJUST MO(_ADJUST)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+ [_BASE] = LAYOUT_rev41lp(
+ KC_TAB, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_BSPC,
+ KC_LCTL, KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN, KC_QUOT,
+ KC_LSFT, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH, RSFT_T(KC_ENT),
+ KC_LALT, LOWER, KC_SPC, RAISE, KC_LGUI
+ ),
+
+ [_LOWER] = LAYOUT_rev41lp(
+ _______, KC_EXLM, KC_AT, KC_HASH, KC_DLR, KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_DEL,
+ _______, KC_UNDS, KC_PLUS, KC_LCBR, KC_RCBR, KC_PIPE, KC_LEFT, KC_DOWN, KC_UP, KC_RGHT, KC_GRV, KC_TILD,
+ _______, KC_ESC, KC_LGUI, KC_LALT, KC_CAPS, KC_DQUO, KC_HOME, KC_END, KC_PGUP, KC_PGDN, KC_PSCR, RSFT_T(KC_SPC),
+ _______, _______, KC_ENT, _______, _______
+ ),
+
+ [_RAISE] = LAYOUT_rev41lp(
+ _______, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_DEL,
+ _______, KC_MINS, KC_EQL, KC_LBRC, KC_RBRC, KC_BSLS, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6,
+ _______, KC_ESC, KC_RGUI, KC_RALT, KC_CAPS, KC_QUOT, KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12,
+ _______, _______, KC_BSPC, _______, _______
+ ),
+
+ [_ADJUST] = LAYOUT_rev41lp(
+ XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, BL_DEC, BL_TOGG, BL_BRTG, BL_INC, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+ XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+ XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, RESET, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+ _______, _______, _______, _______, _______
+ )
+};
+
+layer_state_t layer_state_set_user(layer_state_t state) {
+ return update_tri_layer_state(state, _LOWER, _RAISE, _ADJUST);
+}
diff --git a/keyboards/b_sides/rev41lp/keymaps/vial/config.h b/keyboards/b_sides/rev41lp/keymaps/vial/config.h
new file mode 100644
index 0000000000..4610e1fe4e
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/keymaps/vial/config.h
@@ -0,0 +1,8 @@
+#pragma once
+
+#define DYNAMIC_KEYMAP_LAYER_COUNT 6
+
+#define VIAL_KEYBOARD_UID {0xDE, 0x6E, 0x0C, 0xA6, 0x14, 0xC7, 0x7E, 0x9A}
+#define VIAL_UNLOCK_COMBO_ROWS { 0, 0 }
+#define VIAL_UNLOCK_COMBO_COLS { 0, 1 }
+
diff --git a/keyboards/b_sides/rev41lp/keymaps/vial/keymap.c b/keyboards/b_sides/rev41lp/keymaps/vial/keymap.c
new file mode 100644
index 0000000000..3839783642
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/keymaps/vial/keymap.c
@@ -0,0 +1,85 @@
+/* Copyright 2021 cyril279
+ *
+ * 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
+
+enum layer_names {
+ _BASE,
+ _LOWER,
+ _RAISE,
+ _ADJUST,
+ _NAVIG,
+ _FUNCTION
+};
+
+#define LOWER MO(_LOWER)
+#define RAISE MO(_RAISE)
+#define ADJUST MO(_ADJUST)
+#define SPC_NAV LT(_NAVIG,KC_SPC)
+#define FUNCT MO(_FUNCTION)
+#define NAVIG MO(_NAVIG)
+
+#define LGUI_A LGUI_T(KC_A)
+#define LALT_S LALT_T(KC_S)
+#define LSFT_D LSFT_T(KC_D)
+#define LCTL_F LCTL_T(KC_F)
+#define RCTL_J RCTL_T(KC_J)
+#define RSFT_K RSFT_T(KC_K)
+#define RALT_L LALT_T(KC_L)
+#define RGUI_SCLN RGUI_T(KC_SCLN)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+ [_BASE] = LAYOUT_rev41lp(
+ KC_TAB, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_BSPC,
+ KC_ESC, KC_A, LALT_S, LSFT_D, LCTL_F, KC_G, KC_H, RCTL_J, RSFT_K, RALT_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_ENT,
+ KC_LGUI, LOWER, SPC_NAV, RAISE, FUNCT
+ ),
+
+ [_LOWER] = LAYOUT_rev41lp(
+ KC_GRV, KC_EXLM, KC_AT, KC_HASH, KC_DLR, KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_DEL,
+ _______, _______, _______, _______, _______, _______, KC_TILD, KC_UNDS, KC_PLUS, KC_LCBR, KC_RCBR, KC_PIPE,
+ _______, _______, KC_LGUI, KC_LALT, KC_CAPS, _______, KC_PSCR, _______, _______, _______, _______, _______,
+ _______, _______, _______, MO(_ADJUST), _______
+ ),
+
+ [_RAISE] = LAYOUT_rev41lp(
+ KC_TILD, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_BSPC,
+ _______, _______, _______, _______, _______, _______, KC_GRV, KC_MINS, KC_EQL, KC_LBRC, KC_RBRC, KC_BSLS,
+ _______, _______, KC_LGUI, KC_LALT, KC_CAPS, _______, KC_PSCR, _______, _______, _______, _______, _______,
+ _______, MO(_ADJUST), _______, _______, _______
+ ),
+
+ [_NAVIG] = LAYOUT_rev41lp(
+ KC_DEL, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_DEL,
+ _______, _______, _______, _______, _______, _______, _______, KC_LEFT, KC_DOWN, KC_UP, KC_RGHT, KC_NO,
+ _______, _______, KC_LGUI, KC_LALT, KC_CAPS, _______, _______, KC_HOME, KC_PGDN, KC_PGUP, KC_END, _______,
+ _______, _______, _______, _______, _______
+ ),
+
+ [_FUNCTION] = LAYOUT_rev41lp(
+ KC_DEL, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO, KC_DEL,
+ _______, _______, _______, _______, _______, _______, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6,
+ _______, _______, KC_LGUI, KC_LALT, KC_CAPS, _______, KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12,
+ _______, _______, _______, _______, _______
+ ),
+
+ [_ADJUST] = LAYOUT_rev41lp(
+ XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, BL_DEC, BL_TOGG, BL_BRTG, BL_INC, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+ XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+ XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, RESET, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+ _______, _______, _______, _______, _______
+ )
+};
diff --git a/keyboards/b_sides/rev41lp/keymaps/vial/rules.mk b/keyboards/b_sides/rev41lp/keymaps/vial/rules.mk
new file mode 100644
index 0000000000..f8945fb0a6
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/keymaps/vial/rules.mk
@@ -0,0 +1,3 @@
+VIA_ENABLE = yes
+VIAL_ENABLE = yes
+LTO_ENABLE = yes
diff --git a/keyboards/b_sides/rev41lp/keymaps/vial/vial.json b/keyboards/b_sides/rev41lp/keymaps/vial/vial.json
new file mode 100644
index 0000000000..f759a10aa9
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/keymaps/vial/vial.json
@@ -0,0 +1,216 @@
+{
+ "name": "Reviung41",
+ "vendorId": "0x7807",
+ "productId": "0xDCCB",
+ "lighting": "qmk_backlight",
+ "matrix": { "rows": 7, "cols": 6 },
+ "layouts": {
+ "keymap": [
+ [
+ {
+ "x": 3
+ },
+ "0,3",
+ {
+ "x": 5
+ },
+ "1,2"
+ ],
+ [
+ {
+ "y": -0.85,
+ "x": 2
+ },
+ "0,2",
+ {
+ "x": 1
+ },
+ "0,4",
+ {
+ "x": 3
+ },
+ "1,1",
+ {
+ "x": 1
+ },
+ "1,3"
+ ],
+ [
+ {
+ "y": -0.7999999999999999,
+ "x": 1
+ },
+ "0,1",
+ {
+ "x": 3
+ },
+ "0,5",
+ {
+ "x": 1
+ },
+ "1,0",
+ {
+ "x": 3
+ },
+ "1,4"
+ ],
+ [
+ {
+ "y": -0.8500000000000001,
+ "c": "#777777"
+ },
+ "0,0",
+ {
+ "x": 11
+ },
+ "1,5"
+ ],
+ [
+ {
+ "y": -0.5,
+ "x": 3,
+ "c": "#cccccc"
+ },
+ "2,3",
+ {
+ "x": 5
+ },
+ "3,2"
+ ],
+ [
+ {
+ "y": -0.8500000000000001,
+ "x": 2
+ },
+ "2,2",
+ {
+ "x": 1
+ },
+ "2,4",
+ {
+ "x": 3
+ },
+ "3,1",
+ {
+ "x": 1
+ },
+ "3,3"
+ ],
+ [
+ {
+ "y": -0.7999999999999998,
+ "x": 1
+ },
+ "2,1",
+ {
+ "x": 3
+ },
+ "2,5",
+ {
+ "x": 1
+ },
+ "3,0",
+ {
+ "x": 3
+ },
+ "3,4"
+ ],
+ [
+ {
+ "y": -0.8500000000000001,
+ "c": "#aaaaaa"
+ },
+ "2,0",
+ {
+ "x": 11
+ },
+ "3,5"
+ ],
+ [
+ {
+ "y": -0.5,
+ "x": 3,
+ "c": "#cccccc"
+ },
+ "4,3",
+ {
+ "x": 5
+ },
+ "5,2"
+ ],
+ [
+ {
+ "y": -0.8500000000000001,
+ "x": 2
+ },
+ "4,2",
+ {
+ "x": 1
+ },
+ "4,4",
+ {
+ "x": 3
+ },
+ "5,1",
+ {
+ "x": 1
+ },
+ "5,3"
+ ],
+ [
+ {
+ "y": -0.7999999999999998,
+ "x": 1
+ },
+ "4,1",
+ {
+ "x": 3
+ },
+ "4,5",
+ {
+ "x": 1
+ },
+ "5,0",
+ {
+ "x": 3
+ },
+ "5,4"
+ ],
+ [
+ {
+ "y": -0.8500000000000001,
+ "c": "#aaaaaa"
+ },
+ "4,0",
+ {
+ "x": 11
+ },
+ "5,5"
+ ],
+ [
+ {
+ "x": 3,
+ "w": 1.25
+ },
+ "6,0",
+ {
+ "w": 1.25
+ },
+ "6,1",
+ {
+ "w": 2
+ },
+ "6,2",
+ {
+ "w": 1.25
+ },
+ "6,3",
+ {
+ "w": 1.25
+ },
+ "6,4"
+ ]
+ ]
+ }
+}
+
diff --git a/keyboards/b_sides/rev41lp/readme.md b/keyboards/b_sides/rev41lp/readme.md
new file mode 100644
index 0000000000..3da31ff960
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/readme.md
@@ -0,0 +1,15 @@
+# rev41lp
+
+![rev41lp]
+
+Inspired by the REVIUNG series by Gtips, the rev41lp is 41-key column staggered keyboard designed for use with low-profile pg1350 switches.
+
+Keyboard Maintainer: [cyril](https://github.com/cyril279)
+Hardware Supported: The REVlp PCBs, Pro Micro supported, bluetooth controller friendly.
+Hardware Availability: [PCB Data](https://github.com/cyril279/keyboards/tree/main/revlp)
+
+Make example for this keyboard (after setting up your build environment):
+
+ make b_sides/rev41lp:default
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
diff --git a/keyboards/b_sides/rev41lp/rev41lp.c b/keyboards/b_sides/rev41lp/rev41lp.c
new file mode 100644
index 0000000000..bd3161599b
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/rev41lp.c
@@ -0,0 +1,51 @@
+/* Copyright 2019 gtips
+ *
+ * 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 "rev41lp.h"
+
+// Optional override functions below.
+// You can leave any or all of these undefined.
+// These are only required if you want to perform custom actions.
+
+/*
+
+void matrix_init_kb(void) {
+ // put your keyboard start-up code here
+ // runs once when the firmware starts up
+
+ matrix_init_user();
+}
+
+void matrix_scan_kb(void) {
+ // put your looping keyboard code here
+ // runs every cycle (a lot)
+
+ matrix_scan_user();
+}
+
+bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
+ // put your per-action keyboard code here
+ // runs for every action, just before processing by the firmware
+
+ return process_record_user(keycode, record);
+}
+
+void led_set_kb(uint8_t usb_led) {
+ // put your keyboard LED indicator (ex: Caps Lock LED) toggling code here
+
+ led_set_user(usb_led);
+}
+
+*/
diff --git a/keyboards/b_sides/rev41lp/rev41lp.h b/keyboards/b_sides/rev41lp/rev41lp.h
new file mode 100644
index 0000000000..c1c5be541a
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/rev41lp.h
@@ -0,0 +1,42 @@
+/* Copyright 2021 cyril279
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+#pragma once
+
+#include "quantum.h"
+
+/* This 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_rev41lp( \
+ K00, K01, K02, K03, K04, K05, K10, K11, K12, K13, K14, K15, \
+ K20, K21, K22, K23, K24, K25, K30, K31, K32, K33, K34, K35, \
+ K40, K41, K42, K43, K44, K45, K50, K51, K52, K53, K54, K55, \
+ K60, K61, K62, K63, K64 \
+) \
+{ \
+ { K00, K01, K02, K03, K04, K05 }, \
+ { K10, K11, K12, K13, K14, K15 }, \
+ { K20, K21, K22, K23, K24, K25 }, \
+ { K30, K31, K32, K33, K34, K35 }, \
+ { K40, K41, K42, K43, K44, K45 }, \
+ { K50, K51, K52, K53, K54, K55 }, \
+ { K60, K61, K62, K63, K64, KC_NO } \
+}
diff --git a/keyboards/b_sides/rev41lp/rules.mk b/keyboards/b_sides/rev41lp/rules.mk
new file mode 100644
index 0000000000..c81e12fb0c
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/rules.mk
@@ -0,0 +1,33 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+# Teensy halfkay
+# Pro Micro caterina
+# Atmel DFU atmel-dfu
+# LUFA DFU lufa-dfu
+# QMK DFU qmk-dfu
+# ATmega32A bootloadHID
+# ATmega328P USBasp
+BOOTLOADER = qmk-dfu
+
+# Build Options
+# change yes to no to disable
+#
+BOOTMAGIC_ENABLE = no # Virtual DIP switch configuration
+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
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = no # Breathing sleep LED during USB suspend
+# if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = no # USB Nkey Rollover
+BACKLIGHT_ENABLE = yes # Enable keyboard backlight functionality on B6 by default
+RGBLIGHT_ENABLE = no # Enable keyboard RGB underglow
+MIDI_ENABLE = no # MIDI support
+UNICODE_ENABLE = yes # Unicode
+BLUETOOTH_ENABLE = no # Enable Bluetooth with the Adafruit EZ-Key HID
+AUDIO_ENABLE = no # Audio output on port C6
+FAUXCLICKY_ENABLE = no # Use buzzer to emulate clicky switches
+HD44780_ENABLE = no # Enable support for HD44780 based LCDs