What is an observer in minecraft pe

When it notices a change in the block in front of it in Minecraft, the observer sends a redstone pulse. Let’s explore how to use an observer to construct bridges, farms, flying machines, traps, and much more.

An observer is a block that emits a redstone signal when the block or fluid it faces experiences a change.

Data values

DV Description
0 Facing down
1 Facing up
2 Facing south
3 Facing north
4 Facing east
5 Facing west

Block state

Name Value Description
facing northsoutheastwestupdown The direction the observer is observing. The same direction the player faces, when placing the block.
power truefalse True while the observer is observing a change and emitting a pulse.
  • An observer is helpful for slime block flying machines because it sends a 2 game tick (1 redstone tick) pulse after being moved by a piston. It has a 4 game tick (2 redstone tick) pulse in the Pocket Edition. ).
  • Because Jeb kept mistaking which side was front and which was back, the current Observer texture was developed. He claimed that Tommaso Checchi’s “rejected texture” served as inspiration. [1][2].
Official release
1.11 16w39a Added observer block. When first added, the observers acted as a block update detector, and would emit pulses that lasted 1 game tick (0.5 redstone ticks) and had a signal strength of 1. The observer could also power blocks (like a repeater). It also had no delay between detecting a block update and emitting a pulse, meaning that observers were essentially instant. They were also placed with the observing, or input, side facing the player.
Note: the “arrow” texture on the top/bottom of the observer was pointing the wrong direction (towards the input, rather than the output). This was not noticed by most people, though, since the observer in Pocket Edition had (and as of 1.0.0 still has) a texture bug where the top & side textures wouldnt rotate properly (except the output/input sides), causing the arrow texture to always point in the same direction.
16w41a Observers were changed to emit 4 game tick (2 redstone tick) pulses[7], and their signal strength was changed to 15.[8][9]
Observers *appear* to no longer strongly power blocks, and now only emit activation power, like a block of redstone. (And this may have been the intended behavior for this snapshot.) However, in reality, they still strongly power blocks, but the blocks adjacent to those blocks arent given block updates, causing weird and buggy behavior.[3]
Observers are now placed with the output facing the player.[4][5]
Fixed a bug where observers would redirect redstone dust from all 4 directions.[6] (They are only supposed to redirect dust from their output side.)
16w42a The devs attempted to make observers no longer detect block updates happening to air blocks, in order to make observer behavior more predictable.[10] In the process they broke redstone mechanics a bit, so that the block update bug from the previous snapshot now affected repeaters & comparators, too.[11]
16w43a Fixed the rotation of the “arrow” texture so it would point in the right direction.
General redstone mechanics work as they did before 16w42a, with the exception of the change named below.
Observers now output strong power like in 16w39a, except that they, as well as repeaters & comparators, no longer provide block updates to transparent blocks or air.
16w44a The block update changes relating to redstone from 16w42a & 16w43a were fully reverted.
Observer behavior was overhauled/redefined. The observer changed from a block update detector to a block state change detector. Observers were changed to detect when the block it was observing changed, its basic block state changed, or the block was placed/destroyed. (Note that it does not detect changes in the extended block state, AKA changes that are not saved when the world is unloaded, such as the shape of a fence, or whether or not a repeater is locked.) This change made observer behavior much more predictable, as unexpected/invisible block updates would no longer trigger observers.[12]
Observers were changed to emit a 2 game tick (1 redstone tick) pulse when activated.[13]
Observers no longer output power instantly.[14]
1.11-pre1 Changed front (detecting side) texture to be an observing face. The “arrow” texture on the top/bottom of the observer was also modified.
The redstone output side now blinks red when it outputs power.
Pocket Edition Alpha
0.15.0 May 2, 2016 Jeb tweeted that Daniel Wustenhoff is a working on a BUD block.[16]
Tommaso Checchi tweeted his “rejected graphics” for the block.[15]
build 1 Added observer block.
0.15.3 Observers are now placed like a piston and not a log.

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

  • The new observer texture for the Computer Edition was initially released.

See also



What is the purpose of a Observer in Minecraft?

Chests, trapped chests, furnaces, blast furnaces, smokers, barrels, hoppers, dispensers, and droppers are among the containers that the observer should look out for. The observer block should ideally not notice when the player opens the container.

Can an observer detect a hopper?

You can get an observer in Minecraft by crafting it. You need six cobblestone blocks, two redstone dust, and one nether quartz to make an observer. Stone cannot be used as a substitute for cobblestone, and neither can redstone ore blocks or nether quartz ore blocks.

How do you get an observer in Minecraft?

Usage. If the block it is facing is updated (mined, placed, opened, closed, etc.), the Observer block, which is a Block Update Detector (BUD) block, will send a brief Redstone pulse. ). They are placed like Pistons. Block updates will be visible to the Observer on the larger red square’s face.

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