2. Block Category

2.1 Differences between device blocks and extension blocks

• Device blocks include default category (Events, Control, etc.)
• Extension blocks do not have default category

2.2 Block category settings

• ID:
  • ID is the unique identification of an extension. Developers use ID to distinguish different extensions. ID is also used as the identification of programs for different extensions.
  • Naming conventions:
    • Lower-case English characters or numbers
    • Use "_" to connect multiple words, such as arduino_uno

• Category name:
  • The name of the block category, which will be displayed to users
  • Naming conventions: less than 12 characters

• Category icon:
  • The icon displayed in front of the block category
  • Image formats:
    • Background: transparent
    • File type: SVG
    • Size: 100 × 100
    • Colored image
      

• Block icon:
  • The icon displayed in front of the block
  • Image formats:
    • Background: transparent
    • File type: SVG
    • Size: 100 × 100
    • Color: white
      

• Block color:
  • The color of the block category
  • Use recommended color
  • When block category icon is not set, block color will be used as the icon
    

2.3 Default blocks settings

Check the box to enable default block/blocks.