50% Numpad (QMK)

keymap.c

#include "launchpad.h"
#include "action_layer.h"
#include "eeconfig.h"

extern keymap_config_t keymap_config;

#define _QWERTY 0
#define _FUNC 15
#define _______ KC_TRNS
#define XXXXXXX KC_NO

// Defines for task manager and such
#define CALTDEL LCTL(LALT(KC_DEL))
#define TSKMGR LCTL(LSFT(KC_ESC))

//Tap Dance Declarations
enum {
  TD_7_8 = 0,
  TD_4_5,
  TD_1_2,
  TD_0_ENTER
};

//Tap Dance Definitions
qk_tap_dance_action_t tap_dance_actions[] = {
  [TD_7_8] = ACTION_TAP_DANCE_DOUBLE(KC_7, KC_8),
  [TD_4_5] = ACTION_TAP_DANCE_DOUBLE(KC_4, KC_5),
  [TD_1_2] = ACTION_TAP_DANCE_DOUBLE(KC_1, KC_2),
  [TD_0_ENTER] = ACTION_TAP_DANCE_DOUBLE(KC_0, KC_ENTER)
};

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {

/* Base
 * ,-----------------------.
 * |   7 [8]   |     9     |
 * |-----------+-----------|
 * |   4 [5]   |     6     |
 * |-----------+-----------|
 * |   1 [2]   |     3     |
 * |-----------+-----------|
 * |    FUNC   | 0 [enter] |
 * `-----------------------'
 */
[_QWERTY] = LAYOUT( \
    TD(TD_7_8),      KC_9, \
    TD(TD_4_5),      KC_6, \
    TD(TD_1_2),      KC_3, \
    MO(_FUNC),       TD(TD_0_ENTER)  \
),

/* Function
 * ,-----------------------.
 * |    Add    | Subtract  |
 * |-----------+-----------|
 * | Multiply  |  Divide   |
 * |-----------+-----------|
 * |  _______  |  _______  |
 * |-----------+-----------|
 * |  _______  |  Escape   |
 * `-----------------------'
 */
[_FUNC] = LAYOUT( \
    KC_KP_PLUS,       KC_KP_MINUS, \
    KC_KP_ASTERISK,   KC_KP_SLASH, \
    _______,          _______, \
    _______,          KC_ESCAPE \
)

};

void matrix_init_user(void) {
    
}