Little Big Redstone in FTB Evolution 2

Little Big Redstone lets you shrink big redstone builds into a single block. It adds the Microchip, a block with its own GUI where you place logic components and wire them together, so a complex contraption can sit inside one block. Microchips can also interface with item, fluid and energy storage.^[1][2]

This pack ships version 1.9.10-alpha-26.1.2 of the mod, and it has been in the pack since 1.0.2 or earlier.^[3]

What the mod gives you

• Microchips: you place logic in the GUI and join the components with redstone bits. Every logic component has a tooltip describing what it does.^[1][4]
• Logic components: the standard gates such as NOT, AND and OR, plus parts for delaying, shortening or lengthening a signal, like the Sequencer and the Pulse Throttler. There are also parts like the Battery, Calculator, Comparator and I/O Port.^{[2][5][6][7][8]}
• Logic arrays: items that hold logic, redstone bits and sticky notes to save inventory space. They have 28 slots, and you can browse them from inside a Microchip's menu.^[1][9]
• Floppy disks: they copy the program from one Microchip and install it on another. Installing needs the required logic components and redstone bits, and items in your logic arrays count as being in your inventory.^[2][10]
• Sticky notes: you can place them in the world like item frames, and also inside Microchips to annotate your logic.^[1]

Logic works on analog signals like redstone dust, so a value can be anything from 0 (off) to 15, and 1 and above count as on. All the items come in every dye color, and you can dye logic components separately from the Microchip. A water bucket or snowballs clear the color again, and only the snowballs are used up.^[1][4]

Unverified Where the pack's quest book places this mod, including its chapter, group and neighbouring quests, and whether the ATM Star path uses it, is not shown in the sources here. Check the quest book in game for that.

Little Big Redstone lets you shrink a big redstone build into one block. You put logic components inside a Microchip block, so a complex circuit fits in a single block. Here is the order I would learn it in.^[1][2]

Learn the Microchip interface

Everything happens inside the Microchip's interface. Left-click to place or pick up logic, and hold ctrl while carrying a component to snap it to a grid. Right-click a component to open its settings, if it has any.^[4]

Redstone bits are what connect the logic components to each other. Every logic component also has a tooltip that explains what it does.^[1]

Start with the simple components

1. Place an I/O Port first. I/O ports are how redstone signals get into and out of your circuit, and each one links to a direction on the Microchip. A direction can be an input or an output, never both. If you mix them on one face, neither port works and a warning shows.^[8]
2. Try the NOT Gate. It is the simplest gate: one input, inverted, one output.^[11]
3. Then try the AND Gate and the OR Gate. Both can be configured with between 2 and 10 inputs. An input port only accepts one wire, so use an OR gate when you need to merge several wires into one port.^[12][13]

Keep your parts in a Logic Array

A Logic Array stores logic components, Redstone Bits and Sticky Notes, so your inventory stays tidy. It has 28 slots. You can open it from your hand, and while you are in a Microchip's menu you can see the contents of any logic array in your inventory and left-click one to select it.^[9]

Make a Floppy Disk to copy circuits

Once you have built a circuit you like, a floppy disk stores the Microchip's program so you can install it on another Microchip. Installing needs the logic components and redstone bits to be available. Items in your logic arrays count as items in your inventory for this. Programs can also be saved to and loaded from files in the /little_big_redstone/microchips folder in your game directory, and those files work across worlds and servers.^[10]

White Floppy DiskMod recipe

Crafting Shaped

Crafting Shaped

any iron ingot	any quartz gem	any white dye
any iron ingot	any redstone dust	any iron ingot
any iron ingot	any quartz gem	any iron ingot

Recipe id: little_big_redstone:floppy_disk/white

The white floppy disk. The other dye colors have their own recipes.

Label your builds with Sticky Notes

Sticky notes are placed in the world like item frames, with 4 on each face of a block. You can also place them inside a Microchip to leave notes in your logic.^[1]

White Sticky NoteMod recipe

Crafting Shapeless

• Paper
• any slime ball
• any iron nugget
• any white dye

Recipe id: little_big_redstone:sticky_note/white

The white sticky note, one of the many dye colors.

Color your logic

Logic components inherit the color of the Microchip they sit in by default. You can dye them separately, either in a crafting grid or by right-clicking the component in the menu with dye. To clear a color, use a water bucket, which is not consumed, or snowballs, which are.^[4]

Little Big Redstone is built around one block, the Microchip. You place logic components inside it, connect them with wires, and the whole circuit lives in a single block that talks to the world around it. Everything below is how that works in the pack's version of the mod. The sources show no pack changes to this mod's values or recipes.^[1][2][15]

Working inside a microchip

You build in the microchip's menu. Left-click picks up and places logic, and holding ctrl while you carry a component snaps its placement to a grid. Right-click a component to open its settings, if it has any. You can zoom with the scroll wheel and drag with left-click held to move the view around the circuit.^[4][15]

Signals work like redstone dust: any value from 0 (off) to 15, and 1 and above counts as on. Most components pass the input strength straight through, but each component's guide page lists its exceptions.^[4]

Wires and ports

• Ports are the triangular nubs on the sides of a component. Outputs are always on the right and inputs always on the left.^[16]
• Each input port takes exactly one wire. There is no limit on how many wires can come out of an output port.^[16]
• To join several wires into one input, run them through an OR Gate.^[13][16][17]
• Click an output port, then click the input port you want. Right-click discards a wire you are holding, and left-click picks up a placed wire.^[16]
• Each wire costs exactly one redstone bit, and the bit is only used up once the wire is connected to an input port.^[16]

Talking to the world

The I/O Port is how signals get in and out of the chip. Once you place one, redstone faces show up on the sides of the microchip block. Each port is tied to one of six directions: north, south, east, west, up or down. You can see a direction's colour on the chip by crouching and looking at that side.^[8][15]

You can also set an I/O port's signal strength. As an input, the incoming redstone must meet or exceed that strength for the port to output ON. As an output, a powered port emits exactly the strength you set.^[8]

The Reader looks at the container directly next to the microchip in the direction you configure. That container can hold items (chests, barrels, furnaces), fluids (modded tanks) or energy (modded FE containers such as batteries). It reads item fullness by default, and you can switch this in the logic config menu. Set a threshold as a constant or as a percentage by ending the value with %, and the reader goes ON once the container reaches it.^[18]

The Tag sends signals wirelessly between circuits. A sensor receives and an emitter transmits, and they only match when their labels are identical. Labels are case sensitive, and an empty label only matches other empty labels. A sensor's threshold is how many matching emitters must be ON for it to turn ON. Sensors can pick up emitters in the same circuit. By default a sensor is not global, so on a multiplayer server it only senses your own emitters.^[19]

Logic gates

The NOT gate takes one input and inverts it. AND, NAND, OR, NOR and XOR can each be set to anywhere from 2 to 10 inputs. AND needs every input ON, and NAND is its inverse. OR needs at least one ON, and NOR is its inverse. XOR is ON only when an odd number of inputs are ON, which for two inputs means exactly one. On the analog side, the AND Gate, OR and XOR all output the greatest input signal.^{[11][12][13][20][21][22]}

The Battery outputs its configured strength, always within 0 to 15. The Calculator takes 2 to 10 inputs and adds or subtracts them depending on its mode, again clamped to 0 to 15. In subtract mode input order matters: with A at 5 and B at 10 the result is -5, but the signal can't go negative, so the output is 0 and off.^[5][6]

The Comparator checks between 1 and 10 inputs against a value A. Its mode decides whether all inputs or just one must match, and the comparison can be greater than or equal, equal, or less than or equal. If you set the signal strength to pass, it gains an input port for A. Otherwise it compares against a constant. When it matches, it outputs the output override strength, or A itself if the override is set to pass.^[7][23]

Timing and memory

Minecraft runs 20 ticks per real-life second, and the timing components work in ticks. The Pulse Throttler controls how long a signal stays ON. By default it shortens any signal into a single tick pulse, and if you set a signal strength, it outputs that constant value instead.^[17][24]

The Sequencer delays signals with an internal counter that runs from 0 to the delay you set (default 20). The output is ON while the counter is at its maximum. It has three modes:^[17][25]

• Weak: once an ON signal arrives, the counter climbs to the delay no matter how long the input lasts. Use it to simply delay a signal.^[25]
• Strong: the counter climbs while the input is ON and falls when it stops. A short input that only reaches the halfway point of a 100 tick delay never completes, so the output stays OFF.^[25]
• Counter: the counter climbs while the input is ON and only goes down on a reset, either from the auto reset option or the reset port.^[25]

The sequencer can auto reset to 0 once it hits its maximum, giving an ON output for exactly 1 tick. It can also get a second input port that resets the counter to 0 while ON. In counter mode with a delay of 5 and a throttled input, it emits a single tick pulse after 5 separate ON inputs.^[25]

The T Flip-Flop flips its output each time a new ON input arrives. The RS NOR Latch has a Set input (A) and a Reset input (B): A turns the output ON and it stays ON, B turns it OFF and it stays OFF, and if both are ON the output is OFF.^[26][27]

The Selector has 2 to 10 outputs with only one ON at a time. In counter mode, the top input moves the ON output up and the bottom input moves it down, wrapping around at the ends. In setter mode there is one input per output, and if several inputs are ON the lowest output wins. The Randomizer has 1 to 10 outputs with only one ON at a time. While its input is ON, each tick a random output turns ON with a configurable chance (100% by default), and every output is equally likely. Throttle its input to a single tick, or the chosen output changes every tick.^[28][29]

Logic arrays and floppy disks

A Logic Array holds logic, redstone bits and sticky notes across 28 slots, so your inventory stays free. While you are in a microchip menu, the first logic array in your inventory is shown by default, and you can left-click any other one to switch to it.^[9][30]

Floppy disks copy circuits. Pressing the save combination on a microchip while holding a disk stores its program, and you can then install it onto another microchip, provided you have the logic components and redstone bits it needs. The required items appear above the hotbar when you look at a chip with a disk in hand. Installing also works if the disk is in your off hand when you place a microchip, and items in your logic arrays count as items in your inventory for this.^[10]

Disks can also save to and load from files on your computer through a menu opened while holding a disk and not looking at a chip. Files go in the little_big_redstone/microchips folder in your game directory and work across worlds and servers.^[10]

Black Floppy DiskMod recipe

Crafting Shaped

Crafting Shaped

any iron ingot	any quartz gem	any black dye
any iron ingot	any redstone dust	any iron ingot
any iron ingot	any quartz gem	any iron ingot

Recipe id: little_big_redstone:floppy_disk/black

Each dye colour has its own floppy disk recipe, and this is the black one.

Colouring and notes

Microchips come in the 16 dye colours. Logic inherits the chip's colour by default, but you can dye it separately in the crafting grid or by right-clicking it in the menu with dye. To clear a colour, use a water bucket (not consumed) or a snowball (consumed).^{[4][15][31][32]}

Sticky notes can go inside microchips just like logic, to label your circuits. Right-click a placed note to edit it. A note can be sealed with honeycomb, after which it can no longer be edited.^[33][34]

Little Big Redstone has no tier ladder that the sources here show. What the mod's in-game guide does lay out is a natural order to learn things in, and that is how this section walks through it.^[2]

Step 1: the Microchip and basic logic

The mod adds a Microchip block that you place logic into, so a bigger redstone system fits inside one block. You place or pick up logic in the Microchip's interface with left-click, and you right-click a component to configure it.^[2][4]

Start with the standard gates: NOT Gate, AND Gate and OR Gate. Signals behave like redstone dust, from 0 (off) to 15, and 1 or higher counts as on. The AND gate can be configured with anywhere from 2 to 10 inputs.^{[2][4][12][14]}

Step 2: signal tools and value logic

• Sequencer and Pulse Throttler let you delay, shorten or lengthen a signal.^[2]
• Battery outputs whatever signal strength you configure, within 0 to 15.^[5]
• Calculator adds or subtracts 2 to 10 inputs depending on its mode. In subtract mode the result can't go below 0.^[6]
• Comparator compares 1 to 10 inputs against one signal strength.^[7]
• I/O Port is how redstone signals get into and out of your circuits.^[8]

Step 3: organise and copy your work

A logic array holds logic, redstone bits and sticky notes, so you save inventory space. It has 28 slots, and its contents count as items in your inventory when you install a program from a floppy disk.^[9][10]

Black Logic ArrayMod recipe

Crafting Shaped

Crafting Shaped

any iron ingot	any iron ingot	any iron ingot
any black dye	any wooden chest	any quartz gem
any iron ingot	any iron ingot	any iron ingot

Recipe id: little_big_redstone:logic_array/black

The black logic array is one of the shaped logic array recipes in the pack.

A floppy disk stores the program from one Microchip so you can install it on another, as long as you have the logic components and redstone bits it needs. You can also save programs to and load them from your computer.^[10]

Black Floppy DiskMod recipe

Crafting Shaped

Crafting Shaped

any iron ingot	any quartz gem	any black dye
any iron ingot	any redstone dust	any iron ingot
any iron ingot	any quartz gem	any iron ingot

Recipe id: little_big_redstone:floppy_disk/black

Floppy disks come in every dye colour, each with its own shaped recipe.

Colours

Every item in the mod comes in all dye colours. Logic can be dyed separately from its Microchip, either in the crafting grid or by right-clicking it in the menu with a dye. A water bucket or snowballs clear the colour, and only the snowballs get used up.^[2][4]

FTB Evolution 2 1.1.0 ships Little Big Redstone 1.9.10-alpha-26.1.2. The mod was already in the pack in FTB Evolution 2 1.0.2 or earlier, so this is a version you may have been playing for a while.^[3]

Changes in 1.9.10-alpha-26.1.2

This is the mod's own changelog for the version in the pack. Here is what changed:^[35]

• Fixed logic components duplicating when you assemble a physics contraption with Create Aeronautics.^[35]
• Added a Battery logic component.^[35]
• Sticky notes are now allowed in the logic array.^[35]
• Fixed the Reader not properly accounting for an item container's max slot capacity.^[35]

The duplication fix matters if you build contraptions with logic components on them. The Reader fix is worth knowing about if you read from containers with unusual slot capacities.^[35]