UNO R4 LED Matrix animations

What you’re building

Use Arduino's official library and examples to draw frames and animations on the board's built-in 12×8 LED matrix. This listing preserves the original source and the exact device relationship rather than republishing the creator's work.

Key steps

1. Open the original project source and confirm its supported hardware or board revision.
2. Read the setup, dependency and safety notes before flashing or assembling anything.
3. Reproduce the smallest working example on hardware you own or are authorised to test.
4. Record the working versions before you customise the build.

Original evidence: arduino ↗ · checked 2026-08-07