Mission 535
Siren Stairs: The Alarm That Climbs and Howls
Badge: Siren Maker
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Build an 8-note rising siren that plays in order when someone steps in.
Step on the welcome mat and the whole Lab howls: a rising siren, note by note, that nobody can ignore.
- New skill Playing note blocks in sequence
- Level 6 · Inventor's Lab
- Difficulty Intermediate
- Mode Creative
- Time 30–40 min
- Ages 13+
What you’ll build
Wire a line of note blocks with repeaters between them so they play one by one, each tuned a little higher. Start it from a pressure plate by the Lab door, then experiment with delays and instrument blocks to make the scariest siren you can.
Finish line: One step on the welcome mat sets off your rising siren, tuned and timed to howl through the Lab.
Bonus challenge: Link your Mission 531 tripwire to the siren so both alarms fire together. Then build a falling siren that plays the notes back down.
You’ll need
- Note blocks
- Repeaters
- Redstone dust
- Pressure plate
- Instrument blocks
You choose
- My siren's name
- Instrument (the block underneath sets the sound)
- Rising, falling, or up then down
Stuck?
- Silent note? Each note block needs an empty block of air above it.
- Tap to raise the pitch one step; after the highest note it loops back to the lowest.
- Notes all playing together? Make sure a repeater sits between each section of dust.
For grown-ups
Get this mission
This mission is in Mission Pack 53. 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.