Field Manual

Control Crystals

Crystals are how a DHD learns new tricks. It needs one to work at all, and takes two more as upgrades.

The three slots

Right-click a DHD from behind to open its back panel.

  • Master slot: takes the Master Control Crystal. Without it the DHD does nothing.
  • Two auxiliary slots: each takes one upgrade crystal, never two of the same kind.

Every crystal starts as a Blank Control Crystal (amethyst, quartz and glass).

The upgrades

CrystalWhat it doesWhen you want it
PowerThe DHD's own cold fusion core, 2,000,000,000 EU. With it the DHD opens and holds wormholes within its galaxy with nothing else, and it pays before any other source. It cannot be made, never recharges, and keeps its charge wherever it goes. It cannot open a wormhole into another galaxy.Found only in DHDs already standing in the world
RangeA DHD reaches every world of its own galaxy without it. What it will do is still to come.Not yet
IntergalacticLets the DHD dial an eighth chevron: another galaxy. Opening such a wormhole takes 40 times the usual energy, and only zero point modules pay for it.Late game, with a ZPM
MemoryRemembers the DHD's last 8 wormholes. Open the DHD to see them and redial one with a single press.Travelling back and forth
Wormhole StabilizerLets a wormhole stay open twice as long. Past the usual 38 minutes, holding it open costs 2.5% more every minute.Long expeditions
HoldKeeps the wormhole open to its limit, even after everyone has gone through, instead of letting it close a few seconds later.Moving lots of things through
SecurityRight-click it to write player names on it. Fitted in a DHD, only those players may dial, and only whoever fitted it may take anything out. With no names, only whoever fitted it may dial.Servers

Recipes

Amethyst ShardNether QuartzGlassNether QuartzAmethyst Shard
Blank Control Crystal
Blank Control Crystal · Crafting table
2× Amethyst Shard, 2× Nether Quartz, 1× Glass
NaquadahRedstoneBlank Control CrystalRedstoneNaquadah
Master Control Crystal
Master Control Crystal · Crafting table
2× Naquadah Ingot, 2× Redstone, 1× Blank Control Crystal
TriniumEnder PearlBlank Control CrystalEnder PearlTrinium
Range Crystal
Range Crystal · Crafting table
2× Trinium Ingot, 2× Ender Pearl, 1× Blank Control Crystal
Nether StarEye of EnderBlank Control CrystalEye of EnderNaquadria
Intergalactic Crystal
Intergalactic Crystal · Crafting table
1× Nether Star, 2× Eye of Ender, 1× Blank Control Crystal, 1× Naquadria Ingot
Echo ShardRedstoneBlank Control CrystalRedstoneEcho Shard
Memory Crystal
Memory Crystal · Crafting table
2× Echo Shard, 2× Redstone, 1× Blank Control Crystal
NaquadahObsidianBlank Control CrystalObsidianNaquadah
Wormhole Stabilizer Crystal
Wormhole Stabilizer Crystal · Crafting table
2× Naquadah Ingot, 2× Obsidian, 1× Blank Control Crystal
TitaniumRepeaterBlank Control CrystalRepeaterTitanium
Hold Crystal
Hold Crystal · Crafting table
2× Titanium Ingot, 2× Redstone Repeater, 1× Blank Control Crystal
GoldEye of EnderBlank Control CrystalEye of EnderGold
Security Crystal
Security Crystal · Crafting table
2× Gold Ingot, 2× Eye of Ender, 1× Blank Control Crystal