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Weighted Pressure Plate

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[edit]Weighted Pressure Plate
Weighted Pressure Plate (Light).pngWeighted Pressure Plate (Heavy).png
Weighted Pressure Plate (Light)Weighted Pressure Plate (Heavy)
Type

Nonsolid Block

Physics

No

Transparency

Yes

Luminance

No

Blast resistance

2.5

Hardness

0.5

Tool

A wooden pickaxe or better is required to mine this block

Renewable

Yes

Stackable

Yes (64)

Flammable

No

First appearance

1.5 (13w01a)

Drops

Itself

Data values
Light
dec: 147 hex: 93 bin: 10010011
Heavy
dec: 148 hex: 94 bin: 10010100
Name
Light
light_weighted_pressure_plate
Heavy
heavy_weighted_pressure_plate

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

There are two versions of the weighted pressure plate: the light weighted pressure plate (aka "gold plate": Grid Weighted Pressure Plate (Light).png) and the heavy weighted pressure plate (aka "iron plate": Grid Weighted Pressure Plate (Heavy).png). The only difference between the two are the number of entities required to produce specific signal strengths.

Obtaining[edit]

Weighted pressure plates can be mined using any pickaxe. If mined without a pickaxe, it will drop nothing.

Crafting[edit]

Name Ingredients Crafting recipe

Weighted Pressure Plate (Heavy)

Iron Ingot




Grid layout Arrow (small).png Weighted Pressure Plate (Heavy)
Iron Ingot Iron Ingot



Weighted Pressure Plate (Light)

Gold Ingot




Grid layout Arrow (small).png Weighted Pressure Plate (Light)
Gold Ingot Gold Ingot



Usage[edit]

See also: Redstone circuit

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

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:
A weighted pressure plate cannot be attached to the side or bottom of any block, but attempting to make such an attachment may cause the plate to attach to the top of a block under the destination space. For example, if a fence is on the ground, attempting to attach a plate to the side of the fence will cause the plate to be attached to the top of the ground next to the fence instead.
Required Entities for Weighted Pressure Plate Signal Strength
Signal
Strength
Gold
Plate
Iron
Plate
0 0 0
1 1 1–10
2 2 11-20
3 3 21-30
4 4 31-40
5 5 41-50
6 6 51-60
7 7 61-70
8 8 71-80
9 9 81-90
10 10 91-100
11 11 101-110
12 12 111-120
13 13 121-130
14 14 131-140
15 15+ 141+
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 entities 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).[Verify]
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 adjacent redstone dust, or adjacent redstone comparators facing away from the plate, to a power level proportional to the number of entities on the plate (see table, right)
  • strongly powers a 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 adjacent redstone repeaters facing away from the weighted pressure plate to power level 15
  • activates 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.
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

Water and lava will flow around a weighted pressure plate without affecting it.

Weighted pressure plates are not solid (they are not a barrier to entity movement). A block under a weighted pressure plate can provide a solid surface 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 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).

Weighted pressure plates are 0.0625 blocks high (116 of a block) when inactive and 0.03125 block high (132 of a block) when active, but because they are not solid they do not affect the position of entities "on top" of them (for example, a player on top of a weighted pressure plate is actually standing on the block beneath it).

Data values[edit]

A weighted pressure plate is defined by its ID and block data. A weighted pressure plate also has a block state which is expected to replace the functionality of block data in a future version.

ID[edit]

A weighted pressure plate's ID specifies what type of weighted pressure plate it is.

Name ID Name Block ID
Weighted Pressure Plate (Heavy) minecraft:heavy_weighted_pressure_plate 148
Weighted Pressure Plate (Light) minecraft:light_weighted_pressure_plate 147

Block data[edit]

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

Bits Values
0x1
0x2
0x4
0x8
A four-bit field storing a value from 0 to 15 representing the weighted pressure plate's current redstone power level.

Block state[edit]

See also: Block states
Name Value Description

 power
0 to 15 Specifies the redstone power level currently being produced by the weighted pressure plate.

Video[edit]

History[edit]

Official release
1.5 13w01a Added weighted pressure plates.
1.7.2 13w36a Rescaled output strength of weighted pressure plates.

Pre-1.7.2 requirements[edit]

Signal
strength
Gold plate Iron plate
(blocks)
Iron plate (stacks)
1 1–4 1–42 1 block–42 blocks
2 5–8 43–85 43 blocks–1 stack 21 blocks
3 9–12 86–128 1 stack 22 blocks–2 stacks
4 13–16 129–170 2 stacks 1 block–2 stacks 42 blocks
5 17–20 171–213 2 stacks 43 blocks–3 stacks 21 blocks
6 21–24 214–256 3 stacks 22 blocks–4 stacks
7 25–28 257–298 4 stacks 1 block–4 stacks 42 blocks
8 29–32 299–341 4 stacks 43 blocks–5 stacks 21 blocks
9 33–36 342–384 5 stacks 22 blocks–6 stacks
10 37–40 385–426 6 stacks 1 block–6 stacks 42 blocks
11 41–44 427–469 6 stacks 43 blocks–7 stacks 21 blocks
12 45–48 470–512 7 stacks 22 blocks–8 stacks
13 49–52 513–554 8 stacks 1 block–8 stacks 42 blocks
14 53–56 555–597 8 stacks 43 blocks–9 stacks 21 blocks
15 57+ 598+ 9 stacks 22 blocks+

Issues[edit]

Issues relating to "Weighted Pressure Plate" are maintained on the issue tracker. Report issues there.