var toolbox_oled = {
  "kind": "categoryToolbox",
  "contents": [
    {
      "kind": "category",
      "name": "%{BKY_CAT_OLED}",
      "toolboxitemid": "OLED",
      "levels": "1,2,3",
      "level": "1",
      "categorystyle": "oled_category",
      "cssConfig": {
        "icon": "customIcon fas fa-play"
      },
      "contents": [
        {
          "kind": "block",
          "type": "sh1106_set_text_size"
        },
        {
          "kind": "block",
          "type": "sh1106_set_cursor"
        },
      {
        "kind": "block",
        "blockxml": "<block type='sh1106_write_text'><value name='TEXT'><shadow type='text'><field name='TEXT'></field></shadow></value></block>"
                    // "type": "sh1106_write_text"
        },
        {
          "kind": "block",
          "type": "sh1106_clear_display"
        },
        {
          "kind": "block",
          "type": "sh1106_invert_display"
        },
        {
          "kind": "block",
          "type": "sh1106_set_size"
        },
          {
          "kind": "block",
          "type": "sh1106_set_text_color"
        }
      ]
    }
  ]
};