qmk_firmware/keyboards/omnikey_blackheart/omnikey_blackheart.h

#ifndef omnikey_blackheart
#define omnikey_blackheart

#include "quantum.h"

#define LAYOUT( \
  K000, K001, K002, K003, K004, K005, K006, K007, K008, K009, K010, K011, K012, K013, K014, K015, K016, K017,                               \
  K100, K101, K102, K103, K104, K105, K106, K107, K108, K109, K110, K111, K112, K113, K114, K115, K116, K117, K118, K119, K120, K121, K122, \
  K200, K201, K202, K203, K204, K205, K206, K207, K208, K209, K210, K211, K212, K213, K214, K215, K216, K217, K218, K219, K220, K221, K222, \
  K300, K301, K302, K303, K304, K305, K306, K307, K308, K309, K310, K311, K312, K313, K314, K315, K316, K317, K318, K319, K320, K321,       \
  K400, K401, K402, K403, K404, K405, K406, K407, K408, K409, K410, K411, K412, K413, K414, K415, K416, K417, K418, K419, K420, K421,       \
  K500, K501, K502, K503, K504,             K507,                         K512, K513, K514, K515, K516, K517, K518, K519, K520  \
) { \
  { K000,  K001,  K002,  K003,  K004,  K005,   K006,  K007,  K008,  K009,  K010,  K011,  K012,  K013,  K014,  K015,  K016,  K017,  KC_NO, KC_NO, KC_NO, KC_NO, KC_NO }, \
  { K100,  K101,  K102,  K103,  K104,  K105,   K106,  K107,  K108,  K109,  K110,  K111,  K112,  K113,  K114,  K115,  K116,  K117,  K118,  K119,  K120,  K121,  K122 }, \
  { K200,  K201,  K202,  K203,  K204,  K205,   K206,  K207,  K208,  K209,  K210,  K211,  K212,  K213,  K214,  K215,  K216,  K217,  K218,  K219,  K220,  K221,  K222 }, \
  { K300,  K301,  K302,  K303,  K304,  K305,   K306,  K307,  K308,  K309,  K310,  K311,  K312,  K313,  K314,  K315,  K316,  K317,  K318,  K319,  K320,  K321,  KC_NO }, \
  { K400,  K401,  K402,  K403,  K404,  K405,   K406,  K407,  K408,  K409,  K410,  K411,  K412,  K413,  K414,  K415,  K416,  K417,  K418,  K419,  K420,  K421,  KC_NO }, \
  { K500,  K501,  K502,  K503,  K504,  KC_NO,  KC_NO, K507,  KC_NO, KC_NO, KC_NO, KC_NO, K512,  K513,  K514,  K515,  K516,  K517,  K518,  K519,  K520,  KC_NO, KC_NO }  \
}

#endif