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Redstone Lamp

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Redstone Lamp
Redstone Lamp.png
Lit Redstone Lamp.png

Transparency

Partial (when on)

Luminance

Yes, 15 (when on)

Blast resistance

1.5

Tool

Any tool

Renewable

Yes

Stackable

Yes (64)

Flammable

No

Drops

Itself

Data values

See Data values

Name

See Data values[until 1.13]
redstone_lamp[upcoming 1.13]

Duncan Geere Mojang avatar.png Redstone lamps came to Minecraft in 2012 in update 1.2.1 - which also added iron golems, ocelots, chiseled stone bricks and jungle biomes. They give off a light level of 15 - the same as fire and glowstone - but only when powered by redstone. In fact, that’s how they’re made - by surrounding a glowstone block with four lumps of redstone dust in a crafting table.
Duncan Geere[1]

A redstone lamp is a block which produces light when activated with a redstone trigger.

Obtaining[edit]

A redstone lamp can be mined by hand or with any tool, dropping itself as an item.

Block
Redstone Lamp
Hardness 0.3
Breaking time[note 1]
Hand 0.45
  1. Times are for unenchanted tools in seconds.

Crafting[edit]

Ingredients Crafting recipe
Redstone +
Glowstone











Usage[edit]

A redstone lamp can be used to produce switchable light.

Redstone lamps are redstone mechanisms and can be activated by:

  • An adjacent active power component, including above or below: for example, a redstone torch (except that a redstone torch will not activate a redstone lamp it is attached to), a block of redstone, a daylight sensor, etc.
  • An adjacent powered block (for example, an opaque block with an active redstone torch under it), including above or below
  • A powered redstone comparator or redstone repeater facing the redstone lamp
  • Adjacent powered redstone dust configured to point at the redstone lamp (or on top of it) or directionless; a redstone lamp is not activated by adjacent powered redstone dust that is configured to point away from it.

A redstone lamp activates instantly, but takes 2 redstone ticks to turn off (4 game ticks, or 0.2 seconds barring lag).

An active redstone lamp produces block light 15. An inactive redstone lamp produces no light.

Although a redstone lamp acts like an opaque block in most ways (torches and levers can be attached to it, redstone dust can be placed on it, etc.), an active redstone lamp is "transparent" to sky light, reducing the sky light level by 1.

Data values[edit]

A redstone lamp uses its ID to specify its activation state:

Name ID Name Block ID
Inactive Redstone Lamp minecraft:redstone_lamp 123
Active Redstone Lamp minecraft:lit_redstone_lamp 124

[until 1.13]

Every redstone lamp (active or inactive) has a block data value of 0. Redstone lamps have no block states.[until 1.13]

Block States[edit]

Name Value Description

 lit
true
false
If the redstone lamp is lit.

[upcoming 1.13]

Video[edit]

History[edit]

Alpha
November 11, 2010 Notch claimed that "lamps" had actually stood for "Light A-givin' Material Portal Side... the yellow stone thing"
Official release
1.2.1 12w07a Added redstone lamp.
1.2-pre Darkened texture for inactive redstone lamp.
1.2.4 Added 2-tick delay to deactivation.
1.3.1 12w22a Inventory sprites for blocks were flipped from left to right, changing
to
.
1.7.2 13w37a The item form of block ID
124 (lit redstone lamp) was removed from the game. It can no longer exist in inventories, only as a block in the world.
Upcoming Java Edition
1.13 17w47a The different block IDs for the redstone lamp got merged into 1 ID.
Added lit block state.
Pocket Edition Alpha
0.13.0 build 1 Added redstone lamps.
Legacy Console Edition
TU12 CU1 1.0 Patch 1 Added redstone lamps.

Issues[edit]

Issues relating to "Redstone Lamp" are maintained on the bug tracker. Report issues there.

Trivia[edit]

Gallery[edit]

Note that lamps themselves are solid blocks, so they power other lamps. This causes the cross-shaped patterns that you see.

A glowing roof is easy to do - just lay wire across the blocks, or line the top of the lamps with redstone blocks. Floors and walls are also do-able. For a floor, just use the "knight's move" shape underneath the floor with torches. For a wall, use wall-mounted torches that power blocks above them.

References[edit]

  1. "Block of the Week: Redstone Lamp" – Minecraft.net, March 30, 2018
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