Update keymap to have HHKB-ish support and readme along with it

keyboards/kc60/keymaps/mechmerlin/keymap.c

@@ -10,22 +10,43 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
       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_LCTL,  KC_A,     KC_S,     KC_D,    KC_F,     KC_G,     KC_H,     KC_J,    KC_K,  KC_L,     KC_SCLN,  KC_QUOT,  KC_NO,    KC_ENT,   \
       KC_LSFT,  KC_NO,    KC_Z,     KC_X,    KC_C,     KC_V,     KC_B,     KC_N,    KC_M,  KC_COMM,  KC_DOT,   KC_SLSH,  KC_NO,    KC_RSFT,  \
-      KC_LCTL,  KC_LGUI,  KC_LALT,                     KC_SPC,                             KC_NO,    MO(1),    KC_RALT,  KC_RGUI,  KC_RCTL \
+      KC_LCTL,  KC_LGUI,  KC_LALT,                     KC_SPC,                             KC_NO,    MO(2),    KC_RALT,  KC_RGUI,  KC_RCTL \
       ),
-  [1] = KEYMAP( /* FN Layer 1 */
+  [1] = KEYMAP( /* HHKB-ish Base Layout */
+      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_EQL,   KC_BSLS,  \
+      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_DEL,  \
+      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_NO,    KC_ENT,   \
+      KC_LSFT,  KC_NO,    KC_Z,     KC_X,    KC_C,     KC_V,     KC_B,     KC_N,    KC_M,  KC_COMM,  KC_DOT,   KC_SLSH,  KC_NO,    KC_RSFT,  \
+      KC_LCTL,  KC_LGUI,  KC_LALT,                     KC_SPC,                             KC_NO,    MO(3),    KC_RALT,  KC_RGUI,  KC_RCTL \
+      ),
+  [2] = KEYMAP( /* FN Layer 1 - Basic QWERTY */
       KC_GRV,   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_DEL,  \
       KC_TRNS,  KC_TRNS,   KC_TRNS,   KC_TRNS,  RESET,     KC_TRNS,   KC_TRNS,   KC_TRNS,  KC_TRNS,  KC_TRNS,   KC_TRNS,    KC_TRNS,  KC_TRNS,  KC_TRNS,  \
-      KC_CAPS,  KC_TRNS,   KC_TRNS,   KC_TRNS,  KC_TRNS,   KC_TRNS,   KC_TRNS,   KC_TRNS,  KC_TRNS,  KC_TRNS,   KC_TRNS,    KC_TRNS,  KC_NO,    KC_TRNS,   \
+      KC_CAPS,  KC_TRNS,   KC_TRNS,   KC_TRNS,  KC_TRNS,   KC_TRNS,   TG(1),     KC_TRNS,  KC_TRNS,  KC_TRNS,   KC_TRNS,    KC_TRNS,  KC_NO,    KC_TRNS, \
       KC_TRNS,  KC_NO,     KC_TRNS,   KC_TRNS,  KC_TRNS,   KC_TRNS,   KC_TRNS,   KC_TRNS,  KC_MUTE,  KC_VOLD,   KC_VOLU,    KC_TRNS,  KC_NO,    KC_PGUP,  \
-      KC_TRNS,  KC_TRNS,   KC_TRNS,                        TG(2),                          KC_NO,    KC_TRNS,   KC_HOME,    KC_PGDN,  KC_END \
+      KC_TRNS,  KC_TRNS,   KC_TRNS,                        TG(4),                          KC_NO,    KC_TRNS,   KC_HOME,    KC_PGDN,  KC_END \
+      ),
+  [3] = KEYMAP( /* FN Layer 2 - HHKB-ish Base Layout */
+      KC_GRV,   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_INS,  \
+      KC_CAPS,  KC_TRNS,   KC_TRNS,   KC_TRNS,  KC_TRNS,   KC_TRNS,   KC_TRNS,   KC_TRNS,  KC_TRNS,  KC_TRNS,   KC_TRNS,    KC_UP,    KC_TRNS,  KC_BSPC,  \
+      KC_TRNS,  KC_VOLD,   KC_VOLU,   KC_MUTE,  KC_TRNS,   KC_TRNS,   KC_TRNS,   KC_TRNS,  KC_TRNS,  KC_HOME,   KC_PGUP,    KC_RIGHT, KC_NO,    KC_TRNS,   \
+      KC_TRNS,  KC_NO,     KC_TRNS,   KC_TRNS,  KC_TRNS,   KC_TRNS,   KC_TRNS,   KC_TRNS,  KC_TRNS,  KC_END,    KC_PGDN,    KC_DOWN,  KC_NO,    KC_TRNS,  \
+      KC_TRNS,  KC_TRNS,   KC_TRNS,                        KC_TRNS,                        KC_NO,    KC_TRNS,   KC_TRNS,    KC_TRNS,  KC_TRNS \
       ),
-  [2] = KEYMAP( /* Arrow Layers */
+  [4] = KEYMAP( /* Arrow Layers - Basic QWERTY ONLY */
       KC_TRNS,   KC_TRNS,    KC_TRNS,     KC_TRNS,    KC_TRNS,     KC_TRNS,     KC_TRNS,     KC_TRNS,    KC_TRNS,  KC_TRNS,    KC_TRNS,   KC_TRNS,  KC_TRNS,  KC_TRNS,  \
       KC_TRNS,   KC_TRNS,    KC_TRNS,     KC_TRNS,    KC_TRNS,     KC_TRNS,     KC_TRNS,     KC_TRNS,    KC_TRNS,  KC_TRNS,    KC_TRNS,   KC_TRNS,  KC_TRNS,  KC_TRNS,  \
       KC_TRNS,   KC_TRNS,    KC_TRNS,     KC_TRNS,    KC_TRNS,     KC_TRNS,     KC_TRNS,     KC_TRNS,    KC_TRNS,  KC_TRNS,    KC_TRNS,   KC_TRNS,  KC_NO,    KC_TRNS,   \
       KC_TRNS,   KC_NO,      KC_TRNS,     KC_TRNS,    KC_TRNS,     KC_TRNS,     KC_TRNS,     KC_TRNS,    KC_TRNS,  KC_TRNS,    KC_TRNS,   KC_TRNS,  KC_NO,    KC_UP,  \
       KC_TRNS,   KC_TRNS,    KC_TRNS,                              KC_TRNS,                              KC_NO,    KC_TRNS,    KC_LEFT,   KC_DOWN,  KC_RIGHT \
       ),
+  [5] = KEYMAP( /* Blank Layer for later usage */
+      KC_TRNS,   KC_TRNS,    KC_TRNS,     KC_TRNS,    KC_TRNS,     KC_TRNS,     KC_TRNS,     KC_TRNS,    KC_TRNS,  KC_TRNS,    KC_TRNS,   KC_TRNS,  KC_TRNS,  KC_TRNS,  \
+      KC_TRNS,   KC_TRNS,    KC_TRNS,     KC_TRNS,    KC_TRNS,     KC_TRNS,     KC_TRNS,     KC_TRNS,    KC_TRNS,  KC_TRNS,    KC_TRNS,   KC_TRNS,  KC_TRNS,  KC_TRNS,  \
+      KC_TRNS,   KC_TRNS,    KC_TRNS,     KC_TRNS,    KC_TRNS,     KC_TRNS,     KC_TRNS,     KC_TRNS,    KC_TRNS,  KC_TRNS,    KC_TRNS,   KC_TRNS,  KC_NO,    KC_TRNS,   \
+      KC_TRNS,   KC_NO,      KC_TRNS,     KC_TRNS,    KC_TRNS,     KC_TRNS,     KC_TRNS,     KC_TRNS,    KC_TRNS,  KC_TRNS,    KC_TRNS,   KC_TRNS,  KC_NO,    KC_TRNS,  \
+      KC_TRNS,   KC_TRNS,    KC_TRNS,                              KC_TRNS,                              KC_NO,    KC_TRNS,    KC_TRNS,   KC_TRNS,  KC_TRNS \
+      ),
 
 };
 

keyboards/kc60/keymaps/mechmerlin/readme.md

@@ -1,13 +1,19 @@
 MechMerlin's KC60 Layout
 ======================
 
-This is the 60% layout used by MechMerlin. It has 3 layers, base QWERTY, FN 1, and an arrows only layer.
+This is the 60% layout used by u/merlin36, host of the MechMerlin YouTube channel.
+It has 5 layers, base QWERTY, base HHKB, FN 1, FN 2(HHKB), and an arrows only layer.
+
+Merlin's KC60 was acquired from Massdrop: https://www.massdrop.com/buy/kc60-mechanical-keyboard and is the Co-Star stabilizer version
+
+If you would like to program your KC60 using the manufacturer recommended approach, please follow the guide on keychatter: https://www.keychatter.com/2015/07/05/programming-the-kc60/.
 
 ## Keymap Notes
 - Highly influenced by the KBP V60 and WKL B.Face standard layouts
 - Does not support any form of inswitch or underglow lighting as Merlin hates them.
 - Arrow toggle switch is FN + Space
 - Reset is FN + R
+- HHKB keymap is approximate as keyboard is not built like HHKB
 
 
 ### Build