The four parts you need to know
| Part | What it does |
|---|---|
| Redstone dust | Carries a signal up to 15 blocks |
| Repeater | Boosts the signal back to full, with a 1 to 4 tick delay |
| Comparator | Reads containers and compares signal strength |
| Observer | Sends a pulse when the block in front of it changes |
8 contraptions worth building
- Automatic lights: a daylight sensor, set to inverted, turns lamps on at night.
- Sugar cane farm: an observer watches the cane and a piston breaks it when it grows.
- Auto smelter: hoppers feed items and fuel into furnaces and collect the output.
- Piston door: sticky pistons open a hidden wall. See doors explained.
- Item sorter: comparators filter items into the right chest. See item sorters.
- Bubble elevator: soul sand under water pushes you up, and magma pulls you down.
- Doorbell: a button wired to a note block.
- Trapped chest alarm: opening the chest powers a note block or lamp.