Daylight Detector

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Daylight Detector
Daylight Detector.pngInverted Daylight Detector.png
Type

Block Entity

Requirements

None

Physics

No

Transparency

Yes

Luminance

No

Blast resistance

1

Hardness

0.2

Tool

Renewable

No

Stackable

Yes (64)

Flammable

No, but catches fire from lava

First appearances

See History

Drops

Itself

Block Entity ID

See Data values

Data values

See Data values

Name

See Data values

Tom Stone Mojang avatar.png We're big fans of the daylight sensor, seeing as it can sense when night falls and automatically close your doors, stopping mobs from getting in. Very handy if you're crafting in your basement and lose track of time!
Tom Stone[1]

A daylight detector[Java Edition only] or daylight sensor[Bedrock and Legacy Console editions only] is a block that outputs a redstone signal based on sunlight (or lack thereof).

Obtaining[edit]

Daylight detectors can be broken fairly easily by hand, but can be broken faster by using an axe. Inverted daylight detectors cannot be collected directly, and they will drop a regular daylight detector.

Block Daylight Detector
Hardness 0.2
Tool
Breaking time[note 1]
Hand 0.35
Wooden 0.2
Stone 0.1
Iron 0.05
Diamond 0.05
Golden 0.05
  1. Times are for unenchanted tools in seconds.

Crafting[edit]

Ingredients Crafting recipe
Glass +
Nether Quartz +
Any wood Slab

Usage[edit]

Redstone component[edit]

Graphed daylight detector output in clear weather.
See also: Redstone circuit

A daylight detector can be used to produce redstone power in proportion to the daylight or night time.

A daylight detector is 0.375 blocks high (3/8ths of a block). Daylight detectors can be moved by pistons.‌[Legacy Console and Bedrock editions only] Water and lava will flow around daylight detectors without affecting them.

Placement
To place a daylight detector, use the "Use Item/Place Block" control.
A daylight detector can be "inverted", which reverses the power levels produced by the daylight detector. To invert a daylight detector, use the "Use Item/Place Block" control.
Activation
A daylight detector activates when exposed to sufficient daylight (daylight detector mode) or when its sky light level drops to 0 (inverted daylight detector mode).
An inverted daylight detector activates when exposure to daylight is low enough (inverted daylight detector mode).
Sources of block light (torches, glowstone, etc.) cannot activate a daylight detector.
Behavior
An active daylight detector:
A daylight detector has no effect on other adjacent blocks (for example, it cannot power a block the way a repeater can).

Daylight Detector[edit]

If a daylight detector has an opaque block above it, then it will emit a weaker signal, or none at all, as it is directly proportional to the sky light.

The daylight detector power level should be 0 from time 13680 to 22340.

Daylight detector power levels
Power Clear Rain Thunder
Time reached Time dissipates Light levels Time reached Time dissipates Light levels Time reached Time dissipates Light levels
0 N/A N/A 4–5 N/A N/A 4–5 N/A N/A 4–5
1 22340 13680 4–7 22340 13680 4–7 22340 13680 4–6
2 22800 13220 7–9 22800 13220 6–8 22960 13060 6–8
3 23080 12940 9–11 23240 12780 8–10 23360 12660 7–8
4 23300 12720 11–12 23520 12500 9–11 23700 12300 8–10
5 23540 12480 12–13 23760 12260 10–12 60 11940 10
6 23780 12240 13–14 0 12020 11–12 460 11560 10
7 23960 12040 15 400 11620 12 1040 10980 10
8 180 11840 15 900 11120 12 1740 10280 10
9 540 11480 15 1440 10580 12 2620 9400 10
10 940 11080 15 2080 9940 12 3960 8060 10
11 1380 10640 15 2880 9140 12 N/A N/A N/A
12 1880 10140 15 4120 7900 12 N/A N/A N/A
13 2460 9560 15 N/A N/A N/A N/A N/A N/A
14 3180 8840 15 N/A N/A N/A N/A N/A N/A
15 4300 7720 15 N/A N/A N/A N/A N/A N/A

Inverted Daylight Detector[edit]

Using a daylight detector will invert it. However, the output of the inverted detector is not a simple inversion of the daylight detector’s output; it uses a much simpler algorithm that depends only on the level of light from the sky. Specifically, it outputs a signal strength of 15 minus the current light level, meaning that an inverted daylight detector will actually output a strength of 11 at midnight, if it has line of sight with the sky. The effects of shade are applied before inverting, so shade increases the signal strength when it isn't already full, and prevents it from reaching zero.

The inverted daylight detector cannot be obtained as an item. Mining an inverted daylight detector will simply drop a regular daylight detector.

Fuel[edit]

Daylight detectors can be used as a fuel in furnaces, smelting 1.5 items per block.

Data values[edit]

ID[edit]

Java Edition:

Daylight Detector ID Name
Block daylight_detector
Block entity

Bedrock Edition:

Daylight Sensor ID Name Numeral ID
Normal block daylight_detector 151
Inverted block daylight_detector_inverted 178
Block entity DaylightDetector ?

Block data[edit]

See also: Data values

In Bedrock Edition, a daylight sensor's block data stores its power level:

Bits Values
0x1
0x2
0x4
0x8
Four bits storing a value from 0 to 15 representing the daylight sensor's current redstone power level.

Block states[edit]

See also: Block states
Name Value Description
 invertedfalse
true
If true, the daylight detector is inverted.
 power0–15The current redstone power level produced by the daylight sensor.

Block entity[edit]

See also: Block entity format

A daylight detector has a block entity associated with it which stores only its entity ID and position (the minimum data for a block entity). Although the daylight detector's block entity stores no additional data, the block entity ensures that the daylight detector is updated every game tick.

Video[edit]

History[edit]

July 6, 2010Notch suggests that he may implement daylight sensors.
November 24, 2012Jeb stated that there may be a daylight sensor.
January 2, 2013Jeb tweeted an image of the daylight sensor..
Java Edition
1.5 13w01a Daylight sensors were added to the game.
1.8 14w31a Daylight sensors can now be toggled between day/night by using them.
1.9 15w47a Daylight sensors no longer emit signal during the night when sufficiently shaded.
Inverted daylight sensors now emits a variable signal at night.
1.11 16w32a The block entity ID is changed from DLDetector to daylight_detector.
1.13 17w47a The different block IDs for the daylight detector got merged into one ID.
Added inverted block state.
Renamed to daylight detector.
Prior to The Flattening, these blocks' numeral IDs were 151 and 178.
Pocket Edition Alpha
0.13.0 build 1 Added daylight sensors.
0.15.0 build 1 Daylight sensors can now be moved by pistons.
Legacy Console Edition
TU19CU71.12Patch 1Added daylight sensors.
TU25CU141.17Daylight sensors can now be toggled between day/night by using them.
New Nintendo 3DS Edition
0.1.0 Added Daylight Detectors.

Gallery[edit]

Issues[edit]

Issues relating to "Daylight Sensor" or "Daylight Detector" are maintained on the bug tracker. Report issues there.

References[edit]