Minecraft | Learn Redstone with Old La - Redstone Repeater
Redstone Repeater
The Redstone Repeater is a block used in redstone circuits to "repeat" a redstone signal, amplify it, prevent signal backflow, or "latch" the signal state.
Basic Properties
- Transparent: Yes
- Height: 0
- Blast Resistance: 0
- Mining Tool: Any tool
- Renewable: Yes
- Stackable: Yes (64)
- Flammable: No
Placement and Appearance
The repeater can only be placed on solid blocks (e.g., dirt, stone; counterexamples include glass, leaves, etc.) and can also be placed on upside-down slabs, stairs, and hoppers.
The repeater has a front side and a back side—the direction the arrow on its texture points is the front side. The repeater also has two small redstone torches—the color of the torches indicates whether the output is on (dark red when off, bright red when on). The distance between the two torches represents the delay the repeater introduces during signal transmission.
The repeater has a height of 0.125 (1/8) of a block.
Activation Mechanism
The Redstone Repeater can activate the following components from its front side:
- Redstone dust
- A redstone comparator or another repeater whose back side is facing this repeater
- Any solid block (including mechanical components)
The Redstone Repeater can be activated by any redstone component or mechanical component facing its front side.
A solid block powered by a Redstone Repeater is commonly referred to as "strongly powered," whereas one powered by redstone dust is called "weakly powered." A strongly powered solid block can activate adjacent redstone dust and other redstone components.
- Cannot be powered from the sides
- Can be powered from the back
Signal Repeating Function
Simply put, the Redstone Repeater can "repeat" a signal and boost it back to strength level 15.
The maximum strength of a redstone signal is 15, and the signal weakens by 1 for each block of redstone dust it passes through. If a signal has to travel through 15 blocks of redstone dust, the Redstone Repeater can boost it back to full strength. Placing a solid block before and after the repeater can add an extra 2 blocks of transmission distance.
Although the Redstone Repeater allows signals to travel long distances, it always introduces some delay because the minimum delay is 1 redstone tick (0.1 seconds, not including lag).
Applications
If, while laying out your wiring, you find that your redstone wire isn't long enough, you can use a repeater to extend the signal transmission distance of the redstone wire.