diff --git a/keyboards/b_sides/rev41lp/config.h b/keyboards/b_sides/rev41lp/config.h
new file mode 100644
index 00000000000..899fa9a6bff
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/config.h
@@ -0,0 +1,45 @@
+/*
+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
+
+/* key matrix size */
+#define MATRIX_ROWS 7
+#define MATRIX_COLS 6
+
+#define MATRIX_ROW_PINS { F4, B2, F5, B3, F6, B1, F7 }
+#define MATRIX_COL_PINS { D4, C6, D7, E6, B4, B5 }
+#define UNUSED_PINS
+
+#define DIODE_DIRECTION COL2ROW
+
+#define BACKLIGHT_PIN B6
+#define BACKLIGHT_ON_STATE 1
+#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
diff --git a/keyboards/b_sides/rev41lp/info.json b/keyboards/b_sides/rev41lp/info.json
new file mode 100644
index 00000000000..ba287efff9a
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/info.json
@@ -0,0 +1,58 @@
+{
+ "keyboard_name": "rev41lp",
+ "url": "https://github.com/cyril279/keyboards/tree/main/revlp/41_1350",
+ "maintainer": "cyril279",
+ "layouts": {
+ "LAYOUT_rev41lp": {
+ "layout": [
+ {"label":"K00", "x":0, "y":0.54},
+ {"label":"K01", "x":1, "y":0.36},
+ {"label":"K02", "x":2, "y":0.18},
+ {"label":"K03", "x":3, "y":0},
+ {"label":"K04", "x":4, "y":0.18},
+ {"label":"K05", "x":5, "y":0.36},
+
+ {"label":"K10", "x":7, "y":0.36},
+ {"label":"K11", "x":8, "y":0.18},
+ {"label":"K12", "x":9, "y":0},
+ {"label":"K13", "x":10, "y":0.18},
+ {"label":"K14", "x":11, "y":0.36},
+ {"label":"K15", "x":12, "y":0.54},
+
+ {"label":"K20", "x":0, "y":1.54},
+ {"label":"K21", "x":1, "y":1.36},
+ {"label":"K22", "x":2, "y":1.18},
+ {"label":"K23", "x":3, "y":1},
+ {"label":"K24", "x":4, "y":1.18},
+ {"label":"K25", "x":5, "y":1.36},
+
+ {"label":"K30", "x":7, "y":1.36},
+ {"label":"K31", "x":8, "y":1.18},
+ {"label":"K32", "x":9, "y":1},
+ {"label":"K33", "x":10, "y":1.18},
+ {"label":"K34", "x":11, "y":1.36},
+ {"label":"K35", "x":12, "y":1.54},
+
+ {"label":"K40", "x":0, "y":2.54},
+ {"label":"K41", "x":1, "y":2.36},
+ {"label":"K42", "x":2, "y":2.18},
+ {"label":"K43", "x":3, "y":2},
+ {"label":"K44", "x":4, "y":2.18},
+ {"label":"K45", "x":5, "y":2.36},
+
+ {"label":"K50", "x":7, "y":2.36},
+ {"label":"K51", "x":8, "y":2.18},
+ {"label":"K52", "x":9, "y":2},
+ {"label":"K53", "x":10, "y":2.18},
+ {"label":"K54", "x":11, "y":2.36},
+ {"label":"K55", "x":12, "y":2.54},
+
+ {"label":"K60", "x":2.875, "y":3.54, "w":1.25},
+ {"label":"K61", "x":4.125, "y":3.54, "w":1.25},
+ {"label":"K62", "x":5.375, "y":3.54, "w":2.25},
+ {"label":"K63", "x":7.625, "y":3.54, "w":1.25},
+ {"label":"K64", "x":8.875, "y":3.54, "w":1.25}
+ ]
+ }
+ }
+}
diff --git a/keyboards/b_sides/rev41lp/keymaps/cyril/config.h b/keyboards/b_sides/rev41lp/keymaps/cyril/config.h
new file mode 100644
index 00000000000..4677c5f1d4c
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/keymaps/cyril/config.h
@@ -0,0 +1,21 @@
+/*
+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
+
+#define TAPPING_TERM 150
+#define TAPPING_TERM_PER_KEY
+#define IGNORE_MOD_TAP_INTERRUPT
diff --git a/keyboards/b_sides/rev41lp/keymaps/cyril/keymap.c b/keyboards/b_sides/rev41lp/keymaps/cyril/keymap.c
new file mode 100644
index 00000000000..6db1e47a2f0
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/keymaps/cyril/keymap.c
@@ -0,0 +1,105 @@
+/*
+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, _______, _______, _______, _______, _______,
+ _______, _______, _______, _______, _______
+ ),
+
+ [_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, _______, _______, _______, _______, _______,
+ _______, _______, _______, _______, _______
+ ),
+
+ [_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,
+ _______, _______, _______, _______, _______
+ )
+};
+
+layer_state_t layer_state_set_user(layer_state_t state) {
+ return update_tri_layer_state(state, _LOWER, _RAISE, _ADJUST);
+}
+
+uint16_t get_tapping_term(uint16_t keycode, keyrecord_t *record) {
+ switch (keycode) {
+ case LGUI_A:
+ case RGUI_SCLN:
+ case LALT_S:
+ case RALT_L:
+ case LCTL_F:
+ case RCTL_J:
+ case SPC_NAV:
+ return 225;
+ default:
+ return TAPPING_TERM;
+ }
+}
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 00000000000..b80f4de480a
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/keymaps/default/keymap.c
@@ -0,0 +1,48 @@
+/*
+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
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+ [0] = 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, MO(1), KC_SPC, MO(2), KC_LGUI
+ ),
+
+ [1] = 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, MO(3), _______
+ ),
+
+ [2] = 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,
+ _______, MO(3), KC_BSPC, _______, _______
+ ),
+
+ [3] = 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/namnlos/config.h b/keyboards/b_sides/rev41lp/keymaps/namnlos/config.h
new file mode 100644
index 00000000000..69d44bdd034
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/keymaps/namnlos/config.h
@@ -0,0 +1,43 @@
+/* Copyright 2022 Jan Lindblom (@janlindblom)
+ *
+ * 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
+
+#undef BACKLIGHT_LEVELS
+#define BACKLIGHT_LEVELS 11
+#undef BACKLIGHT_LIMIT_VAL
+#define BACKLIGHT_LIMIT_VAL 255
+#define BACKLIGHT_DEFAULT_LEVEL 3
+
+#define COMBO_COUNT 3
+#define IGNORE_MOD_TAP_INTERRUPT
+
+#define UNICODE_SELECTED_MODES UC_WINC, UC_WIN, UC_MAC, UC_LNX
+
+#define TAPPING_FORCE_HOLD
+#define TAPPING_TERM 200
+#define TAPPING_TERM_PER_KEY
+
+#define LAYER_STATE_8BIT
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+#define NO_ACTION_ONESHOT
+
+/* Bootmagic Lite key configuration */
+#define BOOTMAGIC_LITE_ROW 0
+#define BOOTMAGIC_LITE_COLUMN 0
+
+/* key combination for command */
+#define IS_COMMAND() (get_mods() == (MOD_BIT(KC_LCTL) | MOD_BIT(KC_RCTL)) || get_mods() == (MOD_BIT(KC_LSFT) | MOD_BIT(KC_RSFT)))
diff --git a/keyboards/b_sides/rev41lp/keymaps/namnlos/keymap.c b/keyboards/b_sides/rev41lp/keymaps/namnlos/keymap.c
new file mode 100644
index 00000000000..408c9112501
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/keymaps/namnlos/keymap.c
@@ -0,0 +1,176 @@
+/* Copyright 2022 Jan Lindblom (@janlindblom)
+ *
+ * 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
+#include "keymap_swedish.h"
+#include "sendstring_swedish.h"
+
+enum layer_names {
+ _BASE,
+ _LOWER,
+ _RAISE,
+ _ADJUST
+};
+
+enum custom_keycodes {
+ SK_NOT_EQL = SAFE_RANGE,
+ SK_LEQ,
+ SK_GEQ,
+};
+
+// Custom send_string keys
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+ switch (keycode) {
+ case SK_NOT_EQL:
+ if (record->event.pressed) {
+ SEND_STRING("!=");
+ }
+ break;
+ case SK_LEQ:
+ if (record->event.pressed) {
+ SEND_STRING("<=");
+ }
+ break;
+ case SK_GEQ:
+ if (record->event.pressed) {
+ SEND_STRING(">=");
+ }
+ break;
+ }
+ return true;
+}
+
+// Combos, if enabled
+#ifdef COMBO_ENABLE
+enum combo_events {
+ ZC_COPY,
+ XV_PASTE,
+ ZX_CUT,
+};
+
+const uint16_t PROGMEM copy_combo[] = {KC_Z, KC_C, COMBO_END};
+const uint16_t PROGMEM paste_combo[] = {KC_X, KC_V, COMBO_END};
+const uint16_t PROGMEM cut_combo[] = {KC_Z, KC_X, COMBO_END};
+
+combo_t key_combos[COMBO_COUNT] = {
+ [ZC_COPY] = COMBO_ACTION(copy_combo),
+ [XV_PASTE] = COMBO_ACTION(paste_combo),
+ [ZX_CUT] = COMBO_ACTION(cut_combo),
+};
+
+void process_combo_event(uint16_t combo_index, bool pressed) {
+ switch (combo_index) {
+ case ZC_COPY:
+ if (pressed) {
+ tap_code16(LCTL(KC_C));
+ }
+ break;
+ case XV_PASTE:
+ if (pressed) {
+ tap_code16(LCTL(KC_V));
+ }
+ break;
+ case ZX_CUT:
+ if (pressed) {
+ tap_code16(LCTL(KC_X));
+ }
+ break;
+ }
+}
+#endif
+
+// Tap Dance definitions
+#ifdef TAP_DANCE_ENABLE
+enum dances {
+ TD_SHFT_CAPS,
+ TD_DOT_COL,
+ TD_COM_SCL,
+ TD_DASH_USCR,
+};
+
+qk_tap_dance_action_t tap_dance_actions[] = {
+ // Tap once for Shift, twice for Caps Lock
+ [TD_SHFT_CAPS] = ACTION_TAP_DANCE_DOUBLE(KC_LSFT, KC_CAPS),
+ [TD_COM_SCL] = ACTION_TAP_DANCE_DOUBLE(KC_COMM, SE_SCLN),
+ [TD_DOT_COL] = ACTION_TAP_DANCE_DOUBLE(KC_DOT, SE_COLN),
+ [TD_DASH_USCR] = ACTION_TAP_DANCE_DOUBLE(SE_MINS, S(SE_MINS)),
+};
+# define CK_LSFT TD(TD_SHFT_CAPS)
+# define CK_COMM TD(TD_COM_SCL)
+# define CK_DOT TD(TD_DOT_COL)
+# define CK_DASH TD(TD_DASH_USCR)
+#else
+# define CK_LSFT KC_LSFT
+# define CK_COMM KC_COMM
+# define CK_DOT KC_DOT
+# define CK_DASH SE_MINS
+#endif
+
+// Some defines for the keys below
+#define CK_ESC LT(_RAISE, KC_ESC)
+#define CK_BSPC LCTL_T(KC_BSPC)
+#define CK_DEL LALT_T(KC_DEL)
+#define CK_ENT1 LT(_LOWER, KC_ENT)
+#define CK_ENT2 LT(_RAISE, KC_ENT)
+#define CK_TAB RALT_T(KC_TAB)
+#define CK_ADIA RCTL_T(SE_ADIA)
+#define CK_QUOT RSFT_T(SE_QUOT)
+#define CK_SPC RSFT_T(KC_SPC)
+
+// Alt + [-] => – (en-dash)
+const key_override_t mins_ndash_override = ko_make_basic(MOD_MASK_ALT, SE_MINS, UC(0x2013));
+ // Shift + Alt + [-] => — (em-dash)
+const key_override_t mins_mdash_override = ko_make_basic(MOD_MASK_SA, SE_MINS, UC(0x2014));
+
+const key_override_t **key_overrides = (const key_override_t *[]){
+ &mins_ndash_override,
+ &mins_mdash_override,
+ NULL
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+ [_BASE] = LAYOUT_rev41lp(
+ CK_ESC, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, SE_ARNG,
+ CK_BSPC, KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, SE_ODIA, CK_ADIA,
+ CK_LSFT, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, SE_COMM, SE_DOT, SE_MINS, CK_QUOT,
+ CK_DEL, CK_ENT1, KC_SPC, CK_ENT2, CK_TAB
+ ),
+
+ [_LOWER] = LAYOUT_rev41lp(
+ SK_NOT_EQL, SE_EXLM, SE_AT, SE_HASH, SE_DLR, SE_PERC, SE_CIRC, SE_AMPR, SE_ASTR, SE_LPRN, SE_RPRN, SE_DIAE,
+ SK_LEQ, SE_UNDS, SE_PLUS, SE_LCBR, SE_RCBR, SE_PIPE, KC_LEFT, KC_DOWN, KC_UP, KC_RGHT, SE_GRV, SE_TILD,
+ SK_GEQ, KC_ESC, KC_LGUI, KC_LALT, KC_CAPS, SE_DQUO, KC_HOME, KC_END, KC_PGUP, KC_PGDN, KC_PSCR, CK_SPC,
+ _______, _______, KC_ENT, _______, _______
+ ),
+
+ [_RAISE] = LAYOUT_rev41lp(
+ _______, SE_1, SE_2, SE_3, SE_4, SE_5, SE_6, SE_7, SE_8, SE_9, SE_0, SE_GRV,
+ _______, SE_MINS, SE_EQL, SE_LBRC, SE_RBRC, SE_BSLS, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6,
+ _______, KC_ESC, KC_RGUI, KC_RALT, KC_CAPS, SE_ACUT, KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12,
+ SE_LABK, SE_RABK, KC_BSPC, _______, _______
+ ),
+
+ [_ADJUST] = LAYOUT_rev41lp(
+ XXXXXXX, XXXXXXX, XXXXXXX, BL_OFF, BL_DEC, BL_TOGG, BL_BRTG, BL_INC, BL_ON, XXXXXXX, XXXXXXX, XXXXXXX,
+ XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, BL_STEP, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+ XXXXXXX, UC_M_WC, UC_M_MA, UC_M_LN, 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/namnlos/readme.md b/keyboards/b_sides/rev41lp/keymaps/namnlos/readme.md
new file mode 100644
index 00000000000..cc307b3a970
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/keymaps/namnlos/readme.md
@@ -0,0 +1,3 @@
+# Namnlos custom keymap for Rev41lp
+
+This is a nordic keymap for the Rev41lp by [cyril](https://github.com/cyril279), it's based on the default keymap but has customisations for nordic languages.
diff --git a/keyboards/b_sides/rev41lp/keymaps/namnlos/rules.mk b/keyboards/b_sides/rev41lp/keymaps/namnlos/rules.mk
new file mode 100644
index 00000000000..59c3380a3b8
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/keymaps/namnlos/rules.mk
@@ -0,0 +1,7 @@
+SLEEP_LED_ENABLE = yes
+NKRO_ENABLE = yes
+UNICODE_ENABLE = yes
+TAP_DANCE_ENABLE = yes
+KEY_OVERRIDE_ENABLE = yes
+DEBOUNCE_TYPE = sym_defer_pk
+LTO_ENABLE = yes
diff --git a/keyboards/b_sides/rev41lp/readme.md b/keyboards/b_sides/rev41lp/readme.md
new file mode 100644
index 00000000000..1a72bbf7857
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/readme.md
@@ -0,0 +1,15 @@
+# The rev41lp keyboard
+
+
+
+Inspired by the REVIUNG series by Gtips, the rev41lp is 41-key column staggered keyboard designed for use with low-profile Kailh Choc (pg1350) switches.
+
+* Keyboard Maintainer: [cyril279](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 00000000000..d9ab1ed21e5
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/rev41lp.c
@@ -0,0 +1,17 @@
+/*
+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 "rev41lp.h"
diff --git a/keyboards/b_sides/rev41lp/rev41lp.h b/keyboards/b_sides/rev41lp/rev41lp.h
new file mode 100644
index 00000000000..47afd295a07
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/rev41lp.h
@@ -0,0 +1,35 @@
+/*
+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"
+
+#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 00000000000..27d9decbbfb
--- /dev/null
+++ b/keyboards/b_sides/rev41lp/rules.mk
@@ -0,0 +1,18 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = caterina
+
+# 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 = yes # Console for debug
+COMMAND_ENABLE = yes # Commands for debug and configuration
+NKRO_ENABLE = no # Enable N-Key Rollover
+BACKLIGHT_ENABLE = yes # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = no # Enable keyboard RGB underglow
+AUDIO_ENABLE = no # Audio output