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Build an OR doorbell, a NOT rebel lamp and an AND two-key rocket launch.
The Lab's rocket only fires if BOTH inventors turn their keys. One key alone? Nothing. Build it.
- New skill Building AND, OR and NOT gates
- Level 6 · Inventor's Lab
- Difficulty Intermediate
- Mode Creative
- Time 40–60 min
- Ages 13+
What you’ll build
Meet the three gates behind every computer chip. Build an OR doorbell that rings from either button, a NOT lamp that does the opposite of its lever, and an AND rocket launch that only fires when both keys are turned.
Finish line: Your doorbell rings from either button, your rebel lamp disobeys, and the rocket launches only with both keys.
Bonus challenge: Add a third key so the rocket needs all three. Test all 8 combos on your score sheet. Then add a big red ABORT lever that stops it!
You’ll need
- Levers and buttons
- Redstone torches
- Redstone dust
- Note block
- Dispenser
- Firework rockets
You choose
- My rocket's name
- Firework colours
- Who holds the second key
Stuck?
- A redstone torch turns off when the block it's on is powered. That's how NOT works.
- Launch fires with one key? Check the output torch is on the side of the middle block.
- Rockets hitting something? Point the dispenser up into open sky.
For grown-ups
Get this mission
This mission is in Mission Pack 56. Each printable has the full steps, a Plan & Log page and a parent page.
Print one mission at a time. You never need to print everything.
Played on Minecraft Bedrock on iPad. Buttons can differ on other devices and versions.