Matrix Blocks

Scratchblocks-Plus supports matrix input syntax for blocks that display LED matrices or pixel grids.

Syntax

Matrix values use curly braces with comma-separated rows:

display ({01010,
          01010,
          00000,
          10001,
          01110} v)

Example

Here's a practical example of displaying a pattern on a 5x5 LED matrix:

display ({01010,
          01010,
          00000,
          10001,
          01110} v)

In this example:

• 0 represents an off/unlit LED
• 1 represents an on/lit LED
• Each row is separated by a comma
• Whitespace is ignored for readability

Common Use Cases

Matrix blocks are useful for:

• Microcontroller tutorials (BBC micro:bit, Arduino with LED matrices)
• Game development (displaying sprite patterns)
• Pixel art demonstrations
• Educational lessons about 2D arrays and grid-based graphics