diff --git a/keyboards/claw44/keymaps/default/config.h b/keyboards/claw44/keymaps/default/config.h
index d2ea02545b..98469e4ccf 100644
--- a/keyboards/claw44/keymaps/default/config.h
+++ b/keyboards/claw44/keymaps/default/config.h
@@ -1,6 +1,4 @@
 /*
-This is the c configuration file for the keymap
-
 Copyright 2012 Jun Wako <wakojun@gmail.com>
 Copyright 2015 Jack Humbert
 
diff --git a/keyboards/claw44/keymaps/default/keymap.c b/keyboards/claw44/keymaps/default/keymap.c
index 65dbd67d98..e8416b9c65 100644
--- a/keyboards/claw44/keymaps/default/keymap.c
+++ b/keyboards/claw44/keymaps/default/keymap.c
@@ -1,3 +1,18 @@
+/*
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+Copyright 2015 Jack Humbert
+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
 
 // Each layer gets a name for readability, which is then used in the keymap matrix below.
@@ -11,8 +26,6 @@ enum layer_number {
     _LOWER,
 };
 
-#define KC_ KC_TRNS
-#define KC_RST RESET
 #define KC_L_SPC LT(_LOWER, KC_SPC)  // lower
 #define KC_R_ENT LT(_RAISE, KC_ENT)  // raise
 #define KC_G_JA LGUI_T(KC_LANG1)     // cmd or win
diff --git a/keyboards/claw44/keymaps/oled/config.h b/keyboards/claw44/keymaps/oled/config.h
index edde2c67ca..5379ce677d 100644
--- a/keyboards/claw44/keymaps/oled/config.h
+++ b/keyboards/claw44/keymaps/oled/config.h
@@ -1,6 +1,4 @@
 /*
-This is the c configuration file for the keymap
-
 Copyright 2012 Jun Wako <wakojun@gmail.com>
 Copyright 2015 Jack Humbert
 
diff --git a/keyboards/claw44/keymaps/oled/keymap.c b/keyboards/claw44/keymaps/oled/keymap.c
index 0d10c371a2..5a59034167 100644
--- a/keyboards/claw44/keymaps/oled/keymap.c
+++ b/keyboards/claw44/keymaps/oled/keymap.c
@@ -1,3 +1,18 @@
+/*
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+Copyright 2015 Jack Humbert
+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
 #include <stdio.h>
 
@@ -10,10 +25,9 @@ enum layer_number {
     _QWERTY = 0,
     _RAISE,
     _LOWER,
+    _ADJUST,
 };
 
-#define KC_ KC_TRNS
-#define KC_RST RESET
 #define KC_L_SPC LT(_LOWER, KC_SPC)  // lower
 #define KC_R_ENT LT(_RAISE, KC_ENT)  // raise
 #define KC_G_JA LGUI_T(KC_LANG1)     // cmd or win
@@ -57,6 +71,17 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
                           RESET  , _______, _______, _______,     _______, _______, _______, _______
     //                  `--------+--------+--------+--------'   `--------+--------+--------+--------'
     ),
+    [_ADJUST] = LAYOUT(
+    //,--------+--------+--------+--------+--------+--------.   ,--------+--------+--------+--------+--------+--------.
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,     KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+    //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------|
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,     KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+    //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------|
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,     KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+    //`--------+--------+--------+--------+--------+--------/   \--------+--------+--------+--------+--------+--------'
+                         KC_TRNS, KC_TRNS, KC_TRNS , KC_TRNS,     KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    //                  `--------+--------+--------+--------'   `--------+--------+--------+--------'
+    ),
 };
 
 #ifdef OLED_DRIVER_ENABLE
@@ -72,6 +97,9 @@ void render_layer_state(void) {
         case _LOWER:
             oled_write_ln_P(PSTR("Layer: Lower"), false);
             break;
+        case _ADJUST:
+            oled_write_ln_P(PSTR("Layer: Adjust"), false);
+            break;
         default:
             oled_write_ln_P(PSTR("Layer: Undefined"), false);
     }
diff --git a/keyboards/claw44/keymaps/via/config.h b/keyboards/claw44/keymaps/via/config.h
new file mode 100644
index 0000000000..98469e4ccf
--- /dev/null
+++ b/keyboards/claw44/keymaps/via/config.h
@@ -0,0 +1,21 @@
+/*
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+Copyright 2015 Jack Humbert
+
+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 MASTER_LEFT
diff --git a/keyboards/claw44/keymaps/via/keymap.c b/keyboards/claw44/keymaps/via/keymap.c
new file mode 100644
index 0000000000..5373b76876
--- /dev/null
+++ b/keyboards/claw44/keymaps/via/keymap.c
@@ -0,0 +1,84 @@
+/*
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+Copyright 2015 Jack Humbert
+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
+
+// Each layer gets a name for readability, which is then used in the keymap matrix below.
+// The underscores don't mean anything - you can have a layer called STUFF or any other name.
+// Layer names don't all need to be of the same length, obviously, and you can also skip them
+// entirely and just use numbers.
+
+enum layer_number {
+    _QWERTY = 0,
+    _RAISE,
+    _LOWER,
+    _ADJUST,
+};
+
+#define KC_L_SPC LT(_LOWER, KC_SPC)  // lower
+#define KC_R_ENT LT(_RAISE, KC_ENT)  // raise
+#define KC_G_JA LGUI_T(KC_LANG1)     // cmd or win
+#define KC_G_EN LGUI_T(KC_LANG2)     // cmd or win
+#define KC_C_BS LCTL_T(KC_BSPC)      // ctrl
+#define KC_A_DEL ALT_T(KC_DEL)       // alt
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [_QWERTY] = LAYOUT(
+    //,--------+--------+---------+--------+---------+--------.   ,--------+---------+--------+---------+--------+--------.
+       KC_ESC , KC_Q   , KC_W    , KC_E   , KC_R    , KC_T   ,     KC_Y   , KC_U    , KC_I   , KC_O    , KC_P   , KC_MINS,
+    //|--------+--------+---------+--------+---------+--------|   |--------+---------+--------+---------+--------+--------|
+       KC_TAB , 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, KC_RSFT,
+    //`--------+--------+---------+--------+---------+--------/   \--------+---------+--------+---------+--------+--------'
+                         KC_A_DEL, KC_G_EN, KC_L_SPC, KC_C_BS,     KC_C_BS, KC_R_ENT, KC_G_JA, KC_A_DEL
+    //                 `----------+--------+---------+--------'   `--------+---------+--------+---------'
+    ),
+
+    [_RAISE] = LAYOUT(
+    //,--------+--------+--------+--------+--------+--------.   ,--------+--------+--------+--------+--------+--------.
+       _______, KC_BSLS, KC_CIRC, KC_EXLM, KC_AMPR, KC_PIPE,     KC_AT  , KC_EQL , KC_PLUS, KC_ASTR, KC_PERC, KC_MINS,
+    //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------|
+       KC_LPRN, KC_HASH, KC_DLR , KC_DQT , KC_QUOT, KC_TILD,     KC_LEFT, KC_DOWN,  KC_UP , KC_RGHT, KC_GRV , KC_RPRN,
+    //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------|
+       _______, _______, _______, _______, KC_LCBR, KC_LBRC,     KC_RBRC, KC_RCBR, _______, _______, _______, _______,
+    //`--------+--------+--------+--------+--------+--------/   \--------+--------+--------+--------+--------+--------'
+                         _______, _______, _______, _______,     _______, _______, _______, RESET
+    //                  `--------+--------+--------+--------'   `--------+--------+--------+--------'
+    ),
+
+    [_LOWER] = LAYOUT(
+    //,--------+--------+--------+--------+--------+--------.   ,--------+--------+--------+--------+--------+--------.
+       KC_F1  , KC_F2  , KC_F3  , KC_F4  , KC_F5  , KC_F6  ,     _______, KC_EQL , KC_PLUS, KC_ASTR, KC_PERC, KC_MINS,
+    //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------|
+       _______, KC_1   , KC_2   , KC_3   , KC_4   , KC_5   ,     KC_6   , KC_7   , KC_8   , KC_9   , KC_0   , _______,
+    //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------|
+       KC_F7  , KC_F8  , KC_F9  , KC_F10 , KC_F11 , KC_F12 ,     _______, _______, KC_COMM, KC_DOT , KC_SLSH, _______,
+    //`--------+--------+--------+--------+--------+--------/   \--------+--------+--------+--------+--------+--------'
+                         RESET  , _______, _______, _______,     _______, _______, _______, _______
+    //                  `--------+--------+--------+--------'   `--------+--------+--------+--------'
+    ),
+    [_ADJUST] = LAYOUT(
+    //,--------+--------+--------+--------+--------+--------.   ,--------+--------+--------+--------+--------+--------.
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,     KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+    //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------|
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,     KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+    //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------|
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,     KC_TRNS, KC_TRNS, 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/claw44/keymaps/via/rules.mk b/keyboards/claw44/keymaps/via/rules.mk
new file mode 100644
index 0000000000..1e5b99807c
--- /dev/null
+++ b/keyboards/claw44/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
diff --git a/keyboards/claw44/rev1/config.h b/keyboards/claw44/rev1/config.h
index 2af45a46b2..8116b605cd 100644
--- a/keyboards/claw44/rev1/config.h
+++ b/keyboards/claw44/rev1/config.h
@@ -19,8 +19,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #pragma once
 
 /* USB Device descriptor parameter */
-#define VENDOR_ID 0xFEED
-#define PRODUCT_ID 0x3060
+#define VENDOR_ID 0x5946 // YF
+#define PRODUCT_ID 0x0001
 #define DEVICE_VER 0x0001
 #define MANUFACTURER yfuku
 #define PRODUCT claw44
diff --git a/keyboards/claw44/rev1/readme.md b/keyboards/claw44/rev1/readme.md
new file mode 100644
index 0000000000..5ad967af80
--- /dev/null
+++ b/keyboards/claw44/rev1/readme.md
@@ -0,0 +1,15 @@
+# Claw44
+
+![Claw44](https://i.imgur.com/5a8iogll.jpg)
+
+A split keyboard with 3x6 vertically staggered keys and 4 thumb keys.
+
+* Keyboard Maintainer: [@yfuku_](https://twitter.com/yfuku_)
+* Hardware Supported: Claw44 PCB, ProMicro
+* Hardware Availability: https://yfuku.booth.pm/
+
+Make example for this keyboard (after setting up your build environment):
+
+    make claw44/rev1: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).