ESP32

An inventive project called bareiron has created a custom Minecraft server on an ESP32 microcontroller, which is the size of a penny. The server operates with 400KB of memory and a 160MHz processor, significantly less than the typical requirements for a Minecraft server. To manage terrain generation, the project uses bilinear interpolation instead of the standard Perlin noise method, allowing for smooth landscape gradients while conserving memory. Biomes are represented as circular islands on a grid, with their types determined by a repeating pattern linked to the world’s seed. Cave systems are generated by mirroring the surface landscape, and ores are placed sparingly at depth. Crafting and inventory management have been simplified, with items directly added to the player's inventory instead of dropping. The server can load a chunk in about 200 milliseconds, though performance may decrease with more than three players. It operates on a trust-based model for player actions, which may lead to potential cheating.