Various effects triggered in Minecraft by devices like an Elgato Stream Deck.
Instructions on how to setup the Minecraft mod and Stream Deck plugin can be found on the wiki. The latest downloads can be found here, CurseForge or Modrinth.
After running the mod one, there should be a effectmc directory either with the mod jar or in the game directory. In there will be a config file that allows you to change the port the mod listens on. Don't forget to update your actions as well!