Last Friday I learned about the minecraft “Spigot”/“Bukkit” server implementation. It allows you to insert a plugin with which you can do in-game modifications.
This thing shows the location of the players in my minecraft-server.
The dots visualize the position of each player versus a reference player (called “McAutoBot123” (a bot indeed)). Their color indicate how fast they’re moving.
This thing is build-up of a HUB-75 64x32 pixel display (64x32 RGB LED Matrix Paneel - 4mm pitch), an ESP32 and 2,5A powersupply (should be enough for 30+ players) and a letterbox (Deco LED lichtbak/lightbox - zwart - A4 formaat - 84 letters | bol.com). In the ESP there’s a program which receives pixelflood packets via udp over wifi. On the (minecraft-)server side there’s a python script which renders frames and sends those to the box.
I’m not satisfied with how the letterbox itself looks. With the strips on it, you could barely see a few of the leds. But without them it looks rather, well, as if a car ran over it.