Redstone Lamp

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Redstone Lamp
Unlit Redstone Lamp.png
Lit Redstone Lamp.png
Transparent

Partial (when lit)

Luminance

Yes (15) (when lit)

Blast resistance

1.5

Tool

Any tool

Renewable

Yes

Stackable

Yes (64)

Flammable

No

Catches fire from lava

No

Drops

Itself

Data values

See § Data values

Namespaced ID

See § Data values

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 that produces light when activated with a redstone signal.

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
Hand 0.45

Crafting[edit]

Ingredients Crafting recipe
Redstone Dust +
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 does 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 "translucent" to sky light, reducing the sky light level by 1.

Data values[edit]

ID[edit]

Java Edition:

Block Namespaced ID
Redstone Lamp redstone_lamp

Bedrock Edition:

Block Namespaced ID Numeric ID
Redstone Lamp redstone_lamp 123
Lit Redstone Lamp lit_redstone_lamp 124

Block states[edit]

Java Edition:

Name Default value Allowed values Description
litfalsefalse
true
If the redstone lamp is lit.

Video[edit]

History[edit]

Java Edition Alpha
November 11, 2010Notch claimed that "lamps" had actually stood for "Light A-givin' Material Portal Side... the yellow stone thing"
Java Edition
1.2.112w07aUnlit Redstone Lamp Revision 0.pngLit Redstone Lamp Revision 1.png Added redstone lamps.
1.2-preUnlit Redstone Lamp Revision 1.png Darkened texture for inactive redstone lamp.
1.2.4releaseAdded 2-tick delay to deactivation.
1.3.112w22aInventory sprites for blocks were flipped from left to right, changing to .
1.7.213w37aThe 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.
January 11, 2018Unlit Redstone Lamp.pngLit Redstone Lamp.png Jasper Boerstra tweets an image of updated redstone lamp textures.
1.1317w47aThe different block IDs for the redstone lamp got merged into one ID.
Added lit block state.
Prior to The Flattening, these blocks' numeral IDs were 123 and 124.
1.1418w43aUnlit Redstone Lamp.pngLit Redstone Lamp.png Changed the texture of redstone lamps.
Pocket Edition Alpha
0.13.0build 1Unlit Redstone Lamp Revision 1.pngLit Redstone Lamp Revision 1.png Added redstone lamps.
Bedrock Edition
1.10.0beta 1.10.0.3Unlit Redstone Lamp.pngLit Redstone Lamp.png Changed the texture of redstone lamps.
Legacy Console Edition
TU12CU11.0Patch 1Unlit Redstone Lamp Revision 1.pngLit Redstone Lamp Revision 1.png Added redstone lamps.
New Nintendo 3DS Edition
0.1.0Unlit Redstone Lamp Revision 1.pngLit Redstone Lamp Revision 1.png Added redstone lamps.

Issues[edit]

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

Trivia[edit]

  • Multiple tiled redstone lamps produce a pattern that resembles the truncated square tiling t{4,4}.
  • Redstone lamps are transparent on maps.

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