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Raspberry Pi LED Matrix Effects

List of current contributed effects that can be run. They can be loaded and ran individually with the run.sh script:

./run.sh effect_name

or loaded at random from a configurable list in config.py with:

./playlist.sh

To make a new effect, just copy an existing effect directory that might have some common code and alter its contents. You'll see there is a run() function that receives a matrix and config argument. The config dictionary will have:

  • pixel_width
  • pixel_height
  • effect_directory
  • argv (applicable only to run.sh -- being the arguments passed to the effect from the command line)

hallway

Effect of moving down a hallway.

image image.png

Resize the image in any graphic editor to the size of the matrix and save it as a PNG. Place image in the image effect directory. Fonts usually have some padding and such, so you sometimes have to adjust for that on the 'y' settings.

marquee

Passing json definitions can create any type of marquee.

# ./run.sh marquee  '{ "messages": [{ "left": 10, "right": 5, "r": 255, "g": 255, "b": 255, "message": "my message", "font": "dosis.ttf"}]}'
# example of:
#     The
#        Beverly
# ./run.sh marquee '{"messages": [{"left": 0, "right": 0, "r": 0, "g": 0, "b": 255, "message": "The", "font": "dosis.ttf"}, {"left": 25, "right": 9, "r": 0, "g": 0, "b": 255, "message": "Beverly", "font": "dosis.ttf"}]}'
# notice the -5 for the first `y`.  This offsets the font because of some top padding the font has.
Screen.Recording.2022-07-20.at.8.19.07.PM.mov

Or with a fancier font:

Screen.Recording.2022-07-20.at.8.50.13.PM.mov

off

Simple effect that sets all lights to black.

pong

Simulates a pong game

Screen.Recording.2022-07-20.at.5.53.05.PM.mov

snow

Simple snow effect.

snow_flakes

Complex snow flakes using animated sprites and shimmering brightness.

rgb_test

Test that checks your RGB configuration. Red... Blue... Green... (repeat)

video filename.mp4

To play a video, first resize the video with ffmpeg to the size of your matrix:

ffmpeg -i filename.mp4 -vf scale=60:30 filename-60x30.mp4

Copy the video to the video effect directory to play.

water_ripple

Blue circle animation that resembles water ripples.

Created by @natelewis. Released under the MIT license.