Redstone Lamp

Redstone Lamp

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

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

Obtaining

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

Ingredients	Crafting recipe
Redstone + Glowstone

Usage

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

Main article: Data values

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

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

History

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.
1.7.2			13w37a		Block ID 124 (lit redstone lamp) was removed from the /give command.
Pocket Edition Alpha
0.13.0			build 1		Added redstone lamps.
Console Edition
TU12	CU1	1.0	Patch 1		Added redstone lamps.

See also: Lantern

Issues

Issues relating to “Redstone Lamp” are maintained on the issue tracker. Report issues there.

Gallery

• 

  A redstone lamp shown during the day that is switched off.

• 

  A redstone lamp shown during the day that is switched on.

• 

  A redstone lamp shown during the evening that is switched off.

• 

  A redstone lamp shown during the evening that is switched on.

• 

  Demonstrating how wire powers redstone lamps.

• 

  Demonstrating how repeaters power redstone lamps.

• 

  Demonstrating how a solid block powers redstone lamps.

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

• 

  Floor torch with no lamp above it.

• 

  Floor torch with a lamp above it.

• 

  Wall torch with no lamp above it.

• 

  Wall torch with a lamp above it.

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.

• 

  A redstone lamp floor.

• 

  A redstone lamp wall.

Redstone

View at: Template:Redstone/content [edit]

Blocks

View at: Template:Blocks/content [edit]