Karabiner config

karabiner.json

{
  "global": {
      "check_for_updates_on_startup": true,
      "show_in_menu_bar": true,
      "show_profile_name_in_menu_bar": false
  },
  "profiles": [
      {
          "complex_modifications": {
              "parameters": {
                  "basic.simultaneous_threshold_milliseconds": 50,
                  "basic.to_delayed_action_delay_milliseconds": 500,
                  "basic.to_if_alone_timeout_milliseconds": 1000,
                  "basic.to_if_held_down_threshold_milliseconds": 250,
                  "mouse_motion_to_scroll.speed": 100
              },
              "rules": [
                  {
                      "description": "CAPS LOCK + hjkl to arrow keys",
                      "manipulators": [
                          {
                              "conditions": [
                                  {
                                      "name": "caps_lock pressed",
                                      "type": "variable_if",
                                      "value": 1
                                  }
                              ],
                              "from": {
                                  "key_code": "j",
                                  "modifiers": {
                                      "optional": [
                                          "any"
                                      ]
                                  }
                              },
                              "to": [
                                  {
                                      "key_code": "down_arrow"
                                  }
                              ],
                              "type": "basic"
                          },
                          {
                              "conditions": [
                                  {
                                      "name": "caps_lock pressed",
                                      "type": "variable_if",
                                      "value": 1
                                  }
                              ],
                              "from": {
                                  "key_code": "k",
                                  "modifiers": {
                                      "optional": [
                                          "any"
                                      ]
                                  }
                              },
                              "to": [
                                  {
                                      "key_code": "up_arrow"
                                  }
                              ],
                              "type": "basic"
                          },
                          {
                              "conditions": [
                                  {
                                      "name": "caps_lock pressed",
                                      "type": "variable_if",
                                      "value": 1
                                  }
                              ],
                              "from": {
                                  "key_code": "h",
                                  "modifiers": {
                                      "optional": [
                                          "any"
                                      ]
                                  }
                              },
                              "to": [
                                  {
                                      "key_code": "left_arrow"
                                  }
                              ],
                              "type": "basic"
                          },
                          {
                              "conditions": [
                                  {
                                      "name": "caps_lock pressed",
                                      "type": "variable_if",
                                      "value": 1
                                  }
                              ],
                              "from": {
                                  "key_code": "l",
                                  "modifiers": {
                                      "optional": [
                                          "any"
                                      ]
                                  }
                              },
                              "to": [
                                  {
                                      "key_code": "right_arrow"
                                  }
                              ],
                              "type": "basic"
                          },
                          {
                              "from": {
                                  "key_code": "caps_lock",
                                  "modifiers": {
                                      "optional": [
                                          "any"
                                      ]
                                  }
                              },
                              "to": [
                                  {
                                      "set_variable": {
                                          "name": "caps_lock pressed",
                                          "value": 1
                                      }
                                  }
                              ],
                              "to_after_key_up": [
                                  {
                                      "set_variable": {
                                          "name": "caps_lock pressed",
                                          "value": 0
                                      }
                                  }
                              ],
                              "type": "basic"
                          }
                      ]
                  }
              ]
          },
          "devices": [],
          "name": "Default profile",
          "parameters": {
              "delay_milliseconds_before_open_device": 1000
          },
          "selected": true,
          "simple_modifications": []
      }
  ]
}