mcmodwikiRestart Detector
Stop sensitive farms and flying machines from breaking on server restarts.
2 recipes · 2 loot tables
Build 1.2.2+1.20.1 · checked 13 September 2026
Guides
Recipes
Every recipe Restart Detector adds, grouped by how it is made.
Requires
| Mod | Needed | Versions |
|---|---|---|
fabric-api |
required | * |
polymer-core |
required | * |
polymer-virtual-entity |
required | * |
server_translations_api |
required | * |
Frequently Asked Questions
What does a restart detector do in Minecraft?
A restart detector emits a redstone signal when a server begins its shutdown sequence, allowing automated contraptions to safely park or turn off.
Can restart detectors be moved by flying machines?
Yes, because the detector blocks do not require block entities, pistons and slime blocks can push them without breaking the machine.
What recipe crafts a restart detector?
You craft it using three glass blocks across the top, two nether quartz crystals beside an ender pearl in the center, and three wooden slabs along the bottom.
How does the TPS detector differ from the restart detector?
While the restart detector triggers during shutdown countdowns, the TPS detector responds to server tick rate drops to pause laggy automated farms.