Weighted Pressure Plate

A weighted pressure plate is a non-solid block that can be used to measure the amount of entities on it.

There are two versions of the weighted pressure plate: the light weighted pressure plate (aka "gold plate") and the heavy weighted pressure plate (aka "iron plate"). The only difference between the two are the number of entities required to produce specific signal strenths.

Obtaining
Weighted pressure plates can be crafted from iron ingots or gold ingots.

Usage
A weighted pressure plate can be used to measure the number of entities on it.

Weighted pressure plates are 0.0625 blocks high ($1/16$ of a block) when inactive and 0.03125 block high ($1/32$ of a block) when active, but they do not elevate entities on top of them.

Water and lava will not flow into a weighted pressure plate's space.


 * Placement


 * To place a weighted pressure plate, use the "Use Item/Place Block" control (right-click, by default) while aiming at the face of a block adjacent to the destination space.


 * A weighted pressure plate can be attached to the top of any opaque block, or to the top of a fence, nether brick fence, an upside-down slab, or upside-down stairs.


 * Activation


 * A weighted pressure plate activates when an entity is on top of it (specifically, when the entity's collision mask intersects the bottom quarter-block of the weighted pressure plate's space, which may include players, bats, or blazes flying close to the ground) and deactivates 5 redstone ticks (0.5 seconds, barring lag) after no entities are on top of it, with a minimum activation time of 10 redstone ticks (1.0 seconds, barring lag).


 * A minecart traveling on rails will activate a weighted pressure plate next to a diagonal track but not one next to a straight track.


 * Behavior


 * While active, a weighted pressure plate:
 * powers any adjacent redstone dust to a power level proportional to the number of entities on the plate (see table, right)
 * powers any adjacent redstone comparators facing away from the weighted pressure plate to a power level proportional to the number of entities on the plate (see table, right)
 * strongly powers any full solid opaque block beneath the weighted pressure plate to a power level proportional to the number of entities on the plate (see table, right)
 * powers any adjacent redstone repeaters facing away from the weighted pressure plate to power level 15
 * activates any adjacent mechanism components, including above or below, such as pistons, redstone lamps, etc.


 * An item stack counts as a single entity, no matter how many items are in the stack. When multiple items of the same type fall on a weighted pressure plate, they may initially be separate item entities and the weighted pressure plate will count them separately, but if they then collapse into a single item stack entity the signal strength from the weighted pressure plate may go down.


 * A weighted pressure plate is not solid (it is not a barrier to entity movement). A block under a weighted pressure plate can provide a solid barrier underneath it (for mobs to walk across, items to fall on, etc.), but when a weighted pressure plate is placed on a block with a small collision mask, such as a fence or nether brick fence, it is possible for entities to move through the weighted pressure plate while still activating it (walking through it horizontally, or falling through it vertically). Thus, a weighted pressure plate on a fence can be used to detect entities without stopping them (more compactly than a tripwire circuit).


 * Removal


 * To remove a weighted pressure plate, use the "Attack/Destroy" control (left-click, by default). Removing a weighted pressure plate by hand takes 2.5 seconds (or much faster with a pickaxe) and the weighted pressure plate will drop itself as an item.


 * A weighted pressure plate will also be removed and drop itself as an item:
 * if its attachment block is moved, removed, or destroyed
 * if a piston tries to push it or moves a block into its space

Data values
A weighted pressure plate is defined by its block name and block data. Weighted pressure plates have no associated block entity.

Block name
A weighted pressure plate has two possible block names:

Block data
A weighted pressure plate's block data stores its power level:

Issues
Wägeplatte Placa de presión por peso Plaque de pression pondérée Drukgevoelige drukplaat Утяжелённая нажимная пластина 测重压力板