Build a one-sheep automatic wool farm by placing a sheep over a grass block, aiming a shears-loaded dispenser at it, and using an observer to detect when the sheep eats the grass. A hopper or hopper minecart beneath the grass collects the wool and sends it to a chest. Observer and redstone behavior can differ between Java and Bedrock, so confirm the layout for your edition and version.
How the automatic wool farm works
The farm links three jobs: the sheep regrows wool by eating grass, an observer detects the grass block changing to dirt, and the observer’s redstone signal activates a dispenser containing shears. The sheared wool drops below the sheep, where a hopper or hopper minecart can collect it.
Minecraft’s official observer guide says an observer emits a strong redstone pulse for two ticks when it detects a change, and notes that observers work somewhat differently between Java and Bedrock. The basic mechanism is useful in either edition, but do not assume a particular block-for-block diagram or wiring arrangement works identically in both.
Materials and layout
For a basic one-sheep stall, gather:
- One sheep and a grass block it can eat
- One dispenser and shears to load into it
- One observer
- A hopper or hopper minecart, plus a chest for storage
- Building blocks and glass or other suitable blocks to enclose the sheep
- Redstone components needed to connect the observer output to the dispenser in your edition
Arrange the parts so the sheep stands on or over the grass block, the dispenser faces the sheep, and the collection system sits below the grass. Keep the observer’s detecting face pointed at the grass block; its output side must connect to the dispenser’s activation input. The exact support blocks and wiring depend on orientation and edition, so check the positions in your version before enclosing the build.
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Build and test the farm
- Choose a safe location and build the stall. Make an enclosure that holds one sheep above the grass without blocking the dispenser’s line toward it.
- Make the grass accessible. The sheep needs to eat the grass block to regrow its wool. Leave the watched grass block in place and unobstructed.
- Install the dispenser. Place it facing the sheep and load it with shears. A dispenser facing away from the sheep will not shear it.
- Place the observer. Point its detecting face at the grass block that changes to dirt after the sheep eats it.
- Connect the signal. Route the observer output so it activates the dispenser. Confirm the observer’s output side and dispenser input are correctly oriented for your edition.
- Add collection and storage. Leave space under the grass for a hopper or hopper minecart, then route collected wool into a chest. A hopper minecart can sit beneath the grass platform; the tutorial’s compact example routes it to a double chest.
- Run a test cycle. Watch for the sheep to eat the grass, the dispenser to fire, and wool to reach the chest. If the sheep regrows wool but is not sheared, check the observer direction, redstone connection, dispenser aim, and shears. If it is sheared but wool is missing, check the collection path beneath the grass.
Collection and scaling choices
| Choice | What it does | Trade-off |
|---|---|---|
| Hopper beneath the grass | Collects wool drops and routes them toward storage. | Simple collection option; allow room for the hopper and chest connection. |
| Hopper minecart beneath the grass | Collects drops under the grass platform and can feed a chest. | Useful for the compact arrangement described by the farm tutorial; place it beneath the collection area and verify the support layout. |
| One stall per sheep | Produces wool in the sheep’s color. | Compact and easier to maintain; output depends on regrowth rather than a fixed timer. |
| Multiple stalls | Provides more colors or aggregates output from several sheep. | Requires additional dispensers and shears to maintain. The cited tutorial does not establish a controlled rate or resource-cost comparison. |
Regrowth, output, and maintenance
Shearing does not itself regrow wool: the sheep must be able to eat grass again. If the grass block is unavailable or the sheep cannot reach it, the automatic cycle stops. Keep shears in the dispenser and replace them when they wear out; the farm tutorial does not establish a universal lifespan for a set of shears.
The Minecraft Wiki’s wool-farming tutorial reports a 1-in-1,000 chance per game tick for wool regrowth, a 63% likelihood after 50 seconds, and a likelihood above 90% after two minutes. These are the tutorial’s stated probabilities, not a guaranteed output rate for a particular farm or an independently measured production figure. Expect variable output rather than a reliable number of wool blocks per minute.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Check your edition before copying a diagram
The official observer guide explains that observer behavior differs between Java and Bedrock. Microsoft’s Bedrock redstone guide also describes observer pulses and dispenser behavior, but it does not verify this exact farm layout. If a copied build fails, verify the observer face and output direction, dispenser orientation, and redstone arrangement against your current edition and version rather than changing the sheep or collection mechanism first.
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