Category:GT Covers

This category covers all pages that describe the various covers in GregTech.

There are a lot of covers available in gregtech, Each one has its own use as described below.

The covers can be placed on the sides of machines, cables, wires and pipes.

The covers can be removed with a Crowbar, and they can be configured with a Screwdriver.

When they send a redstone signal the redstone signal will depend on the mode, A few outputs only “on/off” signals while others can be different strengths from 0-15.

Shift-right-clicking with a soldering iron on a cover that sends a redstone signal will toggle it between emitting weak and strong redstone power. Strong redstone power will penetrate through a solid block (but not a hatch or bus,) allowing one to use faces of a multiblock other than the front for emitting redstone.

Note this page is currently WIP

These items needs to be added:

Field Generator

Fluid Detector

Item Detector

Robotic arm

This quest page goes over all of the covers, just in case you forgot or they weren't mentioned. If they have their own quest page, look at it for more info. You can put them on basically any GT block, pipe, machine, tank, etc. Though that doesn't consider whether it will work right or be useful. Shift-Right-Click will open a GUI for many of them. For covers that you can adjust the amount of, clicking the left side with a screwdriver goes down, and right goes up. All covers block rain on the side they're attached to. Generally you can adjust covers with a screwdriver, whether they have a GUI or not. You can remove them with a crowbar if you forgot.

Fluid-Related Covers:
Pump: Transfers fluids at the speed specified on the tooltip.

Fluid Regulator: Regulates the rate that fluid can go through it, as well as pumping it. Can work x/s or x/t.

Steam Valve: Moves more, but is only for steam. Only goes to IV. Does not work on SH steam.

Overflow: GT++, will be removed soon? Voids anything over the specified amount in the tank.

Fluid Detector: Will emit RS based on fluid fill rate of the tank it's on. By default, empty=15, full=0. Use inverted mode to swap. Useful on tanks and hatches.

Ender Fluid Link: Cover version of ender tanks to TP fluid around. Doesn't connect to ender tanks though.

Drain Module: Protects from rain on that side, and will fill the tank with water from rain if it can. Useless.

Fluid Filter: Filters fluid going through it. Click with a cell to set it.

Shutter: Blocks items/fluids when active. Use it with a machine controller and RS. Does not visually disconnect/block. You place it between the pipes, and put the MC on the same pipe.

Item-Related Covers:
Conveyor: Sends items. Use an item pipe in import mode or on a GT block/machine.

Robot Arm: Sends from a specific slot in the machine it's on (internal) to another specific slot in a block next to it (adjacent). Keep going through numbers until you get it right, it seems to change per machine. If the output slot is full, it won't output. There need to be a valid block with slots to send to or the settings won't save.

Item Detector: Will emit RS based on item fill rate of the block it's on. By default, empty=0, full=15. Detects by filled slots, so doesn't work right with the super/quantum chests. Probably better for busses.

Item Filter: WIP PR.

EU-Related Covers:
Energy Detector: Will emit RS based on EU fill rate of the batbuff/tank it's on. By default, empty=0, full=15. Make sure to set it to include batteries - "EU stored". Can also detect steam for some reason.

Power Pass Upgrade: Read the tooltip, then ask Bart how it works, he didn't bother telling anyone. He'll probably just tell you the code is the best documentation, just like the Tectech guys. May not actually be finished/work, either.

Tesla Coil/Tesla Coil Rich Edition: Use with the tesla tower to send EU wirelessly or something.

Other Covers:
Player Detector: Detects players. About 10 block range. Currently owner/other is inverted on non-pipes due to some bug or another.

Activity Detector: Detects either recipe progress or idleness. 0%=0 RS, ~95%=14 by default. In idle mode, idleness is 15, and is 0 when running by default.

Machine Controller: Turns machine on/off based on RS. Disable machine will keep it off regardless of RS state. Safe Mode only works on MBs. If a MB runs out of power, it will normally turn off, but a MC will turn it back on, continuing to void stuff. This will set it to the disable machine state instead. You will also get a notification. This video explains how to make an RS-latch with one. Safe Mode returns your multi block to the way it operates when there is no cover - after a power loss (voiding) it will not turn itself back on. This may or may not be desirable.

Needs Maintenance: Emits RS if it meets the condition specified. Rotor=turbine?

Redstone Transmitter/Receiver (In/Out): OK, these things are confusing, so listen closely. First, set a frequency, either by using the GUI, or using the original way: right clicking it with an item. Empty hand = 0, other items = their item ID. Be careful not to reset it to 0 by accident. Honestly, just use the GUI. You can set it to private or not, it's the same kind of thing as EnderStorage, so you don't blare RS across the server. Channel state = RS level.


 * RT(O) sets the channel state based on the redstone level sent from outside to the specific side. You can TP a RS from this to the RR(O).
 * RT(I) sets the channel state based on redstone level that would be emitted from the machine itself. Always sends 15, so it's useless.
 * RR(O) outputs redstone level based on channel state. You can TP RS from the RT(O) to here.
 * RR(I) controls whether a machine can work based on channel state, just like a machine controller cover does. If it has 0 RS, it stays off. At least 1, and it turns on. You send the signal from elsewhere with the RT(O).
 * RR(I) can also be used in conjunction with other covers whose states talk about conditional.

IC2 Heat vents: Speeds up machines a tiny amount? Someone look through the code and tell me what it means. Also looks neat.

Crafting Table: Adds a crafting table to the block you can use. Useless.

Planks/Plates/Foils: Blocks I/O on that side. Use a screwdriver to set allowed types of stuff through. Blocks everything by default. Set the output to another side first to avoid changing its settings too. You'll probably 'use' this by accident at least once.

Computer Monitor: Adds a visual look. Useless, but sorta fancy.

Lens: Visual only. Useless.