Logistica is an item transport, distribution and storage mod for Minetest.
The core principle behind this mod is that item transportation is demand-driven: no item is moved unless it is needed somewhere.
Available for download at ContentDB: https://content.minetest.net/packages/ZenonSeth/logistica/
An in-game and online guide to all Logistica machines are available, see: https://github.com/ZenonSeth/logistica/wiki