AUTOMATIC COMPOSTER

Materials List

Composterx1

Hopperx2

Chestx2

The material cost of one Automatic Composter

Every part that goes into Automatic Composter, with the crafting price of one

Part used in Automatic Composter	How many per Automatic Composter	Crafting cost of a single one
Composter	1	7 Wooden Slabs
Hopper	2	5 Iron Ingot, 1 Chest
Chest	2	8 Planks

Prices for Automatic Composter are read straight off the recipes in Java Edition 26.2.

Automatic Composter, in one place: what it is and what it does

Feeds compostable items into a composter automatically and collects bone meal output. Zero redstone required, uses only hoppers. Perfect companion for crop farms.

As a utility build it automates a processing job, smelting, brewing, composting, or generating a resource, to save repetitive manual work. It is a beginner-friendly build: the wiring is forgiving and a first-time redstoner can finish it in one sitting.

It fits in roughly 1W x 1L x 5H and works in Minecraft 1.14+ through to the current 26.2 release.

How the Automatic Composter works: the redstone mechanics

Another redstone-free hopper build: a top hopper feeds compostable items into a composter, and a bottom hopper collects the bone meal the composter produces once it fills. An input chest above and an output chest below make it fully hands-off alongside a crop farm.

The core parts doing the work are composter, hopper, and chest; the rest of the 3 material types are structure and wiring that hold those pieces in the right relationship.

Because it automates a processing step, the limiting factor is the machine's own cycle time, and the redstone simply has to feed it in the correct order and rhythm.

How to build the Automatic Composter

1. 1Place the composter.
2. 2Place a hopper on top of the composter, pointing into it.
3. 3Place an input chest on top of the hopper.
4. 4Place a hopper below the composter, pointing into an output chest.
5. 5Fill the input chest with compostable items (seeds, crops, etc.).
6. 6The top hopper feeds items in, the composter processes them, and bone meal drops into the bottom hopper.

Where the Automatic Composter earns its keep

• ▸As a utility build it automates a processing job, smelting, brewing, composting, or generating a resource, to save repetitive manual work.
• ▸Built from 1× composter, 2× hopper, and 2× chest and more, it slots into a survival base as a beginner-level project.
• ▸Connect its input and output chests to a wider item network so it processes resources unattended.
• ▸Scale the array up by repeating the unit once the single version works.

Tips & common mistakes

• !Only compostable items work, so filter the input, feeding it non-compostables just clogs the top hopper.
• !Test the full cycle of the Automatic Composter in a creative-mode copy first, then rebuild it in survival once you know the timing holds.
• !Remember a powered hopper is locked, not active, keep stray redstone away from the hopper lines unless you deliberately want to gate item flow.

Builds that share parts with Automatic Composter

Automatic Composter does not stand on its own. 5 other contraption pages are tied to it:

• Automatic Potion Brewer, a advanced build with 1 shared part
• Automatic Smelter Array, also beginner, 1 shared part
• Bulk Storage System, intermediate, 1 shared part
• Item Sorter, intermediate, 1 shared part
• Mob Farm / Grinder, intermediate, 1 shared part