Minecraft Redstone Basics: Power, Repeaters and Your First Door

Short answer: redstone is wiring. A power source sends a signal through dust, repeaters keep it strong, and devices like pistons and lamps react to it.

#Power sources

• Lever: stays on or off.
• Button: sends a short pulse.
• Pressure plate: on while something stands on it.
• Redstone torch: always on, unless the block it sits on is powered.

#Redstone dust

Dust carries the signal. Power drops by one level each block, so the signal fades after 15 blocks.

#Repeaters and comparators

#Repeaters

A repeater boosts the signal back to full strength and adds a delay you can set by right-clicking it. Signals only go one way through a repeater.

#Comparators

A comparator can read how full a chest or furnace is, and compare two signals. It is the starting point for sorting systems.

#Build your first piston door

1. Dig a 2-wide, 2-high doorway in a wall.
2. Place two sticky pistons on each side, facing the doorway.
3. Put the door blocks on the piston faces.
4. Run dust from a lever to all four pistons, using repeaters if needed.
5. Flip the lever: the door opens.

#Next steps

Try a hidden staircase or an automatic farm with an observer. Each new build teaches one new part.