Minecraft Redstone Basics: Dust, Torches, Repeaters and Your First Builds

Every circuit begins with something that makes power. A lever is a switch: it stays on or off until you flip it. A button gives a short pulse and then turns itself off. A pressure plate sends power while a player or mob stands on it. A redstone torch gives constant power, and a block of redstone does the same and can be pushed around by pistons.

Redstone dust itself comes from redstone ore, which you find deep underground at roughly the same depths as diamonds. Each ore block drops several pieces of dust, so a single vein goes a long way.

Redstone dust is the wire. Place it on the ground and it carries power from a source to whatever you want to switch on. The signal starts at a strength of 15 and drops by 1 for every block of dust it travels through, so after 15 blocks it runs out completely.

That is the single most common reason a new build does not work: the wire is simply too long. You can see the strength in the dust itself, which glows bright red near the source and darker further away.

A repeater fixes the distance problem. You craft it from 2 redstone torches, 1 redstone dust and 3 stone. Any signal that reaches the back of a repeater, even a strength of 1, leaves the front at full strength 15, ready for another 15 blocks.

Repeaters only send power in one direction, the way the small arrow on top points, which also makes them handy for keeping two wires from interfering. Right-click a repeater to add delay: it has four settings, from 1 to 4 redstone ticks, which is how players time doors, traps and light shows.

A redstone torch is made from redstone dust on a stick. It powers the block above it and the parts next to it, but it has one more trick: when the block it is attached to receives power, the torch switches off. Power in, power out. That makes it an inverter, the part that turns "on" into "off" and back.

Inverters sound abstract, but you will use them constantly, for example to keep a door closed until someone presses a button, or to make a lamp turn on when a lever turns off.

Build one: a lamp on a switch. Place a redstone lamp, put a lever on a block a few spaces away, and connect them with a line of dust. Flip the lever and watch the dust light up along the line. It looks simple, but it teaches power sources, wires and outputs in one go.

Build two: a door that opens itself. Place an iron door, which cannot be opened by hand, and put a pressure plate on the ground in front of and behind it. Walking onto either plate powers the door and opens it, and it closes once you step off. No wire is needed because the plates sit right next to the door.

Build three: a hidden piston door. A piston is crafted from 3 planks, 4 cobblestone, 1 iron ingot and 1 redstone dust, and adding a slimeball makes a sticky piston. Place two sticky pistons, one above the other, facing into a doorway one block wide and two tall, each holding a block. Wire both to one lever. When the pistons are powered they push the blocks into the doorway and close it; when you cut the power, the sticky pistons pull the blocks back and the way is open.

Check the wire length first, then check that dust actually points into the thing you want to power, since dust that runs past a piston instead of into it may not power it. Look at the direction of every repeater arrow. And remember that a redstone torch placed on top of a piston does not power that piston.

Once these basics feel natural, the next parts to learn are observers, which send a pulse when the block in front of them changes, and comparators, which read and compare signal strengths. Those two are behind almost every automatic farm in the game.