I have recently gotten into HA and am enjoying it so far, although it currently controls 1 lightbulb.
I have made an LEDCube in the past, which can be changed using UDP commands. As this is my own Arduino device, there are no preconfigured devices that match it (especially since it predates my knowledge of HA existing)
I see snippets of YAML code spread across this forum, but I have no clue where it would go. Any help would be greatly appreciated. The closest I have found is UDP Send packets with HA but again, I don’t know where this would go