Psi in FTB StoneBlock 4

Psi is a magical-tech mod about programming your own spells. You build action sequences that run in the world, and the mod uses basic maths like vectors, so a single spell can do a lot. It encourages creativity and problem solving, which makes it a good fit if you like to tinker. The pack includes Psi 1.21.1-110 for NeoForge.^[1][2]

Psi has a leveling system with in-game documentation and tutorials for the pieces you unlock. The in-game guide has tutorial entries called Writing A Spell, Casting A Spell, Types & Numbers, Move It, Limits and EXPLOSION!!. Spells can also be shared and copied to and from outside sources with the in-game sharing tools.^{[1][3][4][5][6][7][8]}

Where it fits in the pack

The pack's general_magic quest chapter walks you through Psi in a clear order. Each step is gated behind the one before it, so you can follow it from your first casting device to the late-game gear.^[9]

1. Start with CAD Assembler and an iron or gold CAD assembly in "Psi" quest, then bring redstone and Psidust for "Your First Psi Material" quest.^[9]
2. That unlocks the basic parts. These are a colorizer in "A World of Color" quest, a Basic CAD Battery in "Tier 1 CAD Battery" quest, a Basic CAD Core in "Tier 1 CAD Core" quest and a Basic CAD Socket in "Tier 1 CAD Socket" quest. You also get the Spell Programmer and a Spell Bullet in "The Fun starts now!" quest.^[9]
3. Next comes Psimetal Ingot, made with a gold ingot in "Your First Spell" quest. It opens the upgrades: overclocked or conductive cores, signaling or large sockets, an extended battery and a Psimetal CAD Assembly.^[9]
4. The last tier starts with a diamond and a Psigem in "Psi Gems" quest. It leads to the ultradense battery, hyperclocked or radiative cores, transmissive or huge sockets, ebony and ivory assemblies, Psimetal tools and the Psimetal Exosuit.^[9]

Psi is a spell programming mod: you build action sequences, called spells, and run them in the world. In this pack the general_magic quest chapter gives you a clear order to follow. It starts at the CAD Assembler and works up through Psimetal to Psigem gear.^[1][9]

Start with the CAD Assembler

Your first stop is the CAD Assembler. The pack added this recipe itself, so don't expect the mod's default. The opening quest "Psi" quest asks for it, together with either an Iron CAD Assembly or an Gold CAD Assembly.^[9][10]

CAD AssemblerAdded by the pack

Shaped (kubejs)

Shaped (kubejs)

any obsidian plate	Energy Processor	any obsidian plate
any fortron infused ingot	Dark Immortal Stone	any fortron infused ingot
any obsidian plate	any obsidian plate	any obsidian plate

Recipe id: ftb:crafting/psi/cad_assembler

This recipe is added by the pack.

Make an Iron CAD Assembly

The Iron CAD Assembly is one of the two items the opening quest accepts, so it is the natural next craft. The Gold version also counts for that quest.^[9][11]

Iron CAD AssemblyMod recipe

Crafting Shaped

4 × any iron ingot

Recipe id: psi:cad_assembly_iron

Get your first Psidust

Next comes Psidust. The follow-up quest "Your First Psi Material" quest asks you to hold redstone and Psidust, and it unlocks the whole set of basic parts. The game also has an advancement for crafting your first piece of Psidust.^[9][11]

PsidustMod recipe

Trick Crafting (psi)

• Iron CAD Assembly
• any redstone dust

Recipe id: psi:psidust

Build the basic parts

Once the Psidust quest is done, several quests open at the same time, so you can take them in any order.^[9]

• Basic CAD Core for "Tier 1 CAD Core" quest.^[9]
• Basic CAD Socket for "Tier 1 CAD Socket" quest.^[9]
• Basic CAD Battery for "Tier 1 CAD Battery" quest.^[9]
• Any CAD Colorizer for "A World of Color" quest. The quest accepts every colour, plus the Psi CAD Colorizer and Drained CAD Colorizer variants.^[9][10]
• Spell Programmer and Spell Bullet together for "The Fun starts now!" quest.^[9]

Basic CAD CoreMod recipe

Crafting Shaped

Crafting Shaped

Empty slot	any iron ingot	Empty slot
any iron ingot	any psidust	any iron ingot
Empty slot	any iron ingot	Empty slot

Recipe id: psi:cad_core_basic

Basic CAD SocketMod recipe

Crafting Shaped

Crafting Shaped

any psidust	any iron ingot	Empty slot
any iron ingot	Empty slot	Empty slot

Recipe id: psi:cad_socket_basic

Basic CAD BatteryMod recipe

Crafting Shaped

Crafting Shaped

any iron ingot

any psidust

any gold ingot

Recipe id: psi:cad_battery_basic

The Spell Programmer is another recipe the pack added itself, while the Spell Bullet recipe is the mod's own.^[10]

Spell ProgrammerAdded by the pack

Shaped (kubejs)

Shaped (kubejs)

any obsidian plate	Energy Processor	any obsidian plate
any fortron infused ingot	Floppy Disk	any fortron infused ingot
any obsidian plate	any obsidian plate	any obsidian plate

Recipe id: ftb:crafting/psi/programmer

This recipe is added by the pack.

Spell BulletMod recipe

Crafting Shaped

Crafting Shaped

any iron ingot

any psidust

Recipe id: psi:spell_bullet_basic

Move on to Psimetal

After the Programmer and Spell Bullet quest, the chapter moves on to gold and Psimetal Ingot ("Your First Spell" quest). The game has an advancement for infusing your first piece of Psimetal.^[9][11]

Psimetal IngotMod recipe

Trick Crafting (psi)

• Iron CAD Assembly
• any gold ingot

Recipe id: psi:psimetal

Psimetal opens four quests: stronger cores ("Tier 2 CAD Cores" quest), the Signaling or Large socket ("Tier 2 CAD Sockets" quest), the Extended CAD Battery ("Tier 2 CAD Battery" quest) and the Psimetal CAD Assembly ("A Much Better CAD Assembly" quest). You can craft the Psimetal assembly directly, or use an upgrade recipe that combines your Gold and Iron assemblies into one.^[9][10]

Psimetal CAD AssemblyMod recipe

Crafting Shaped

4 × any psimetal ingot

Recipe id: psi:cad_assembly_psimetal

Psimetal CAD AssemblyMod recipe

Trick Crafting (psi)

• Gold CAD Assembly
• Iron CAD Assembly

Recipe id: psi:gold_to_psimetal_assembly_upgrade

Psigem and what it unlocks

With a Psimetal CAD Assembly you can infuse a diamond into a Psigem ("Psi Gems" quest). That quest is the gateway to the rest of the chapter: the Ultradense battery, the Hyperclocked and Radiative cores, the Psimetal exosuit pieces and tools, the Transmissive and Huge sockets, and the Ebony and Ivory assemblies.^[9][10][11]

PsigemMod recipe

Trick Crafting (psi)

• Psimetal CAD Assembly
• any diamond gem

Recipe id: psi:psigem

Psi is a spell-programming mod, not a machine mod. The sources here describe no multiblocks, fluids, item pipes or automation for it, so this section sticks to what they do confirm.^[1]

The core idea: spells as action sequences

At its heart, Psi lets you build action sequences, called spells, that are executed in the world. The mod uses basic mathematical concepts such as vectors, which gives spells a lot of flexibility. You can also share and copy spells to and from outside sources with in-game sharing tools. The mod requires Patchouli.^[1]

Spells are built from pieces, and some pieces read the state of the caster. One selector reads the caster's Psi energy level, another reads the caster's CAD battery level, and another reads the CAD's internal time in ticks. A separate selector reads a saved vector from CAD Memory.^[11]

The vector raycast operators have a maximum range of 32.^[11]

CAD components

The pack has crafting recipes for the parts of a CAD. The assemblies are Iron CAD Assembly, Gold CAD Assembly, Psimetal CAD Assembly, Ebony Psimetal CAD Assembly and Ivory Psimetal CAD Assembly. There are also cores, batteries and colorizers. Here are a few of them, so you can see exactly how they are made in this pack.^[10]

Iron CAD AssemblyMod recipe

Crafting Shaped

4 × any iron ingot

Recipe id: psi:cad_assembly_iron

Basic CAD CoreMod recipe

Crafting Shaped

Crafting Shaped

Empty slot	any iron ingot	Empty slot
any iron ingot	any psidust	any iron ingot
Empty slot	any iron ingot	Empty slot

Recipe id: psi:cad_core_basic

Basic CAD BatteryMod recipe

Crafting Shaped

Crafting Shaped

any iron ingot

any psidust

any gold ingot

Recipe id: psi:cad_battery_basic

The other cores are Conductive CAD Core, Overclocked CAD Core, Radiative CAD Core and Hyperclocked CAD Core. The other batteries are Extended CAD Battery and Ultradense CAD Battery. Colorizers come in a range of dye colours, plus a drained, a Psi and a full-spectrum version.^[10]

Config options that affect how Psi works

• common.cadHarvestLevel is the harvest level a CAD has for block-breaking spells. In this pack it is 3 (diamond level), which is also the mod default.^[12]
• common.spellCacheSize is how many compiled spells are kept in a cache. It is set to 200 here, which is the mod default, and the config advises leaving it alone unless you know what you're doing.^[12]
• common.magiPsiClientSide is false in this pack. Setting it to true would disable all server-side features of Magical Psi so it works as a purely client-side mod.^[12]

Client settings

• client.pauseGameInProgrammer is true, so the Spell Programmer screen pauses the game in singleplayer.^[13]
• client.psiBarOnRight is true, so the Psi Bar is drawn on the right of the screen.^[13]
• client.contextSensitiveBar is true, so the Psi Bar is hidden when it's full and you're holding an item that uses Psi.^[13]
• client.changeGridCoordinatesToLetterNumber is false, so the Programmer shows grid coordinates as a pair of numbers instead of a letter and a number.^[13]

Psi progression in this pack runs through one quest chapter, general_magic. It is a clean ladder: you start with iron or gold CAD tech, move to Psimetal, then unlock Psigem and everything that hangs off it. The quests have no titles, so I point to them by ID and describe what each one asks for.^[9]

Getting started: CAD Assembler and Psidust

The first quest, "Psi" quest, wants a CAD Assembler plus either an Iron CAD Assembly or an Gold CAD Assembly. It has a prerequisite quest that is not one of the Psi quests. The CAD Assembler recipe is added by the pack, so do not expect the mod's own recipe.^[9][10]

CAD AssemblerAdded by the pack

Shaped (kubejs)

Shaped (kubejs)

any obsidian plate	Energy Processor	any obsidian plate
any fortron infused ingot	Dark Immortal Stone	any fortron infused ingot
any obsidian plate	any obsidian plate	any obsidian plate

Recipe id: ftb:crafting/psi/cad_assembler

This recipe is added by the pack.

Next is "Your First Psi Material" quest, which asks for redstone and Psidust. This is the hub of the early game, because five quests unlock from it.^[9]

PsidustMod recipe

Trick Crafting (psi)

• Iron CAD Assembly
• any redstone dust

Recipe id: psi:psidust

• "A World of Color" quest: any CAD colorizer, such as the Psi CAD Colorizer or the Drained CAD Colorizer.^[9]
• "Tier 1 CAD Battery" quest: the Basic CAD Battery.^[9]
• "Tier 1 CAD Core" quest: the Basic CAD Core.^[9]
• "Tier 1 CAD Socket" quest: the Basic CAD Socket.^[9]
• "The Fun starts now!" quest: the Spell Programmer and a Spell Bullet. This is the one that leads onward to Psimetal.^[9]

The Spell Programmer is also a pack-added recipe.^[10]

Spell ProgrammerAdded by the pack

Shaped (kubejs)

Shaped (kubejs)

any obsidian plate	Energy Processor	any obsidian plate
any fortron infused ingot	Floppy Disk	any fortron infused ingot
any obsidian plate	any obsidian plate	any obsidian plate

Recipe id: ftb:crafting/psi/programmer

This recipe is added by the pack.

Psimetal

"Your First Spell" quest asks for a gold ingot and a Psimetal Ingot. It unlocks after the Programmer quest.^[9]

Psimetal IngotMod recipe

Trick Crafting (psi)

• Iron CAD Assembly
• any gold ingot

Recipe id: psi:psimetal

Psimetal opens four branches.^[9]

• "Tier 2 CAD Cores" quest: the Overclocked CAD Core or the Conductive CAD Core.^[9]
• "Tier 2 CAD Sockets" quest: the Signaling CAD Socket or the Large CAD Socket.^[9]
• "Tier 2 CAD Battery" quest: the Extended CAD Battery.^[9]
• "A Much Better CAD Assembly" quest: the Psimetal CAD Assembly. This is the gate to the next stage.^[9]

Psimetal CAD AssemblyMod recipe

Crafting Shaped

4 × any psimetal ingot

Recipe id: psi:cad_assembly_psimetal

Psimetal CAD AssemblyMod recipe

Trick Crafting (psi)

• Gold CAD Assembly
• Iron CAD Assembly

Recipe id: psi:gold_to_psimetal_assembly_upgrade

An upgrade route that turns the Gold and Iron assemblies into a Psimetal one.

Psigem

"Psi Gems" quest asks for a diamond and a Psigem, and it unlocks after the Psimetal CAD Assembly quest.^[9]

PsigemMod recipe

Trick Crafting (psi)

• Psimetal CAD Assembly
• any diamond gem

Recipe id: psi:psigem

Psigem is the biggest fork in the chapter. Six quests open from it.^[9]

• "Tier 3 CAD Battery" quest: the Ultradense CAD Battery.^[9]
• "Tier 3 CAD Cores" quest: the Hyperclocked CAD Core or the Radiative CAD Core.^[9]
• "Psionic Armor!" quest: any piece of the Psimetal Exosuit, such as the Psimetal Exosuit Helmet.^[9]
• "Psionic Tools!" quest: any Psimetal tool, such as the Psimetal Pickaxe.^[9]
• "Tier 3 CAD Sockets" quest: the Transmissive CAD Socket or the Huge CAD Socket.^[9]
• "The Best CADs Accessible in Survival" quest: an Ebony Substance or Ivory Substance, plus an Ebony Psimetal CAD Assembly or Ivory Psimetal CAD Assembly.^[9]

Ebony and Ivory

The pack has changed both substance recipes. The recipe dump marks them as changed by the pack, so check the recipes below rather than relying on the mod's defaults.^[10]

Ebony SubstanceChanged by the pack

Trick Crafting (psi)

• Psimetal CAD Assembly
• any coal

Recipe id: psi:ebony_substance

Ivory SubstanceChanged by the pack

Trick Crafting (psi)

• Psimetal CAD Assembly
• any quartz gem

Recipe id: psi:ivory_substance

Once you have a substance, the ingots are ordinary crafting recipes.^[10]

Ebony Psimetal IngotMod recipe

Crafting Shaped

Crafting Shaped

any ebony substance	any ebony substance	any ebony substance
any ebony substance	any psimetal ingot	any ebony substance
any ebony substance	any ebony substance	any ebony substance

Recipe id: psi:ebony_psimetal

Ivory Psimetal IngotMod recipe

Crafting Shaped

Crafting Shaped

any ivory substance	any ivory substance	any ivory substance
any ivory substance	any psimetal ingot	any ivory substance
any ivory substance	any ivory substance	any ivory substance

Recipe id: psi:ivory_psimetal

Psi's links to the rest of the pack come from crafting recipes the pack added with KubeJS. They gate the machines you need to start programming spells, so you'll want other mods' materials before you cast anything.^[10]

CAD Assembler

The CAD Assembler is where you build your CAD, and its pack recipe is where Psi meets other mods: it uses an Energy Processor from Applied Flux and Dark Immortal Stone from XyCraft World. The exact recipe is shown below, and the rest of it accepts any item with the matching ingot or plate tag.^[10]

CAD AssemblerAdded by the pack

Shaped (kubejs)

Shaped (kubejs)

any obsidian plate	Energy Processor	any obsidian plate
any fortron infused ingot	Dark Immortal Stone	any fortron infused ingot
any obsidian plate	any obsidian plate	any obsidian plate

Recipe id: ftb:crafting/psi/cad_assembler

Spell Programmer

The Spell Programmer also uses an Energy Processor. Instead of the Dark Immortal Stone, it takes a Floppy Disk from ComputerCraft.^[10]

Spell ProgrammerAdded by the pack

Shaped (kubejs)

Shaped (kubejs)

any obsidian plate	Energy Processor	any obsidian plate
any fortron infused ingot	Floppy Disk	any fortron infused ingot
any obsidian plate	any obsidian plate	any obsidian plate

Recipe id: ftb:crafting/psi/programmer

How the quests fit in

The general_magic quest chapter walks you through Psi in order. It starts with a quest asking for the CAD Assembler plus an Iron or Gold CAD Assembly, which is "Psi" quest. The Spell Programmer and a Spell Bullet come in "The Fun starts now!" quest. Since both machines need other mods' materials, you'll be gathering those before you can finish these quests.^[9][10]

The rest of the chapter only asks for Psi items plus vanilla ones: Redstone, a Gold Ingot and a Diamond. Nothing else in these quests requires another mod's items.^[9]

All the Psi quests the sources show sit in a single chapter, general_magic. They ask you to hand in items, and the quests have no titles in the pack files, so they are identified by ID below. They form a branching tree, so you don't have to follow one straight line.^[9]

Getting started

1. "Psi" quest asks for the CAD Assembler plus either the Iron CAD Assembly or the Gold CAD Assembly. It unlocks after a quest that is not part of this Psi list.^[9]
2. "Your First Psi Material" quest asks for Redstone and Psidust. It opens up the first branch of basic CAD parts.^[9]

First branch: basic CAD parts

Once the Psidust quest is done, these quests all open at the same time, so you can take them in any order.^[9]

• "A World of Color" quest accepts any CAD colorizer: one of the dyed colors, the Psi CAD Colorizer or the Drained CAD Colorizer.^[9]
• "Tier 1 CAD Battery" quest asks for the Basic CAD Battery.^[9]
• "Tier 1 CAD Core" quest asks for the Basic CAD Core.^[9]
• "Tier 1 CAD Socket" quest asks for the Basic CAD Socket.^[9]
• "The Fun starts now!" quest asks for the Spell Programmer and a Spell Bullet. This is the one that leads onward.^[9]

Psimetal tier

"Your First Spell" quest follows the Spell Programmer quest and asks for a Gold Ingot and a Psimetal Ingot. It unlocks the next set of quests.^[9]

• "Tier 2 CAD Cores" quest wants either the Overclocked CAD Core or the Conductive CAD Core.^[9]
• "Tier 2 CAD Sockets" quest wants either the Signaling CAD Socket or the Large CAD Socket.^[9]
• "Tier 2 CAD Battery" quest asks for the Extended CAD Battery.^[9]
• "A Much Better CAD Assembly" quest asks for the Psimetal CAD Assembly. This one continues the chain.^[9]

Endgame Psi quests

"Psi Gems" quest comes after the Psimetal CAD Assembly quest and asks for a Diamond and a Psigem. It opens the final group of quests below.^[9]

• "Tier 3 CAD Battery" quest asks for the Ultradense CAD Battery.^[9]
• "Tier 3 CAD Cores" quest wants either the Hyperclocked CAD Core or the Radiative CAD Core.^[9]
• "Psionic Armor!" quest wants any Psimetal Exosuit piece: the Psimetal Exosuit Helmet, Psimetal Exosuit Chestplate, Psimetal Exosuit Leggings or Psimetal Exosuit Boots.^[9]
• "The Best CADs Accessible in Survival" quest wants either the Ebony Substance or the Ivory Substance, plus either the Ivory Psimetal CAD Assembly or the Ebony Psimetal CAD Assembly.^[9]
• "Psionic Tools!" quest wants any Psimetal tool: the Psimetal Sword, Psimetal Pickaxe, Psimetal Axe or Psimetal Shovel.^[9]
• "Tier 3 CAD Sockets" quest wants either the Transmissive CAD Socket or the Huge CAD Socket.^[9]

Psi has two config files in this pack, one for common settings and one for client-side display. The good news is that nothing here looks heavily tweaked. The sources list the two numeric common options as matching the mod default, so you can treat them as stock Psi.^[12][13]

Common settings (psi-common.toml)

• common.cadHarvestLevel is set to 3, the same as the mod default. It controls the harvest level of a CAD for block-breaking spells, and 3 is diamond level. The allowed range is 0 to 255.^[12]
• common.spellCacheSize is set to 200, also the mod default. It sets how many compiled spells are kept in a cache. The config's own note says to leave it alone unless you know what you're doing.^[12]
• common.magiPsiClientSide is false. Setting it to true would disable all server-side features so Psi works purely as a client-side mod. With it false, Psi's normal server-side features stay on.^[12]

Client settings (psi-client.toml)

These only change how Psi looks and behaves on your own screen. The sources don't say what the mod defaults are for these options, so I can only tell you what the pack sets.^[13]

• client.psiBarOnRight is true, so the Psi Bar is drawn on the right side of the screen.^[13]
• client.contextSensitiveBar is true. The Psi Bar is hidden when it's full and you're holding an item that uses Psi.^[13]
• client.pauseGameInProgrammer is true, so the Spell Programmer screen pauses the game in singleplayer.^[13]
• client.changeGridCoordinatesToLetterNumber is false. The Programmer shows grid coordinates as a pair of numbers rather than a letter and a number.^[13]

FTB StoneBlock 4 1.21.0 ships Psi version 1.21.1-110. The mod list shows Psi was first included in FTB StoneBlock 4 1.0.0 or earlier.^[2]

Psi 1.21.1-110

This is the version your pack uses. Its changelog lists these additions:^[2][14]

• KubeJS support for NeoForge.^[14]
• Support for datapacks to define CAD component stats.^[14]

Unverified The sources here include no pack changelog entries for Psi, so whether any StoneBlock 4 release changed Psi values or recipes is not shown. Check the pack's own changelogs for that.