Mechanism

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Mechanisms are items that can be activated or activate other mechanisms that are connected to them with wire.

Items[edit | edit source]

Item Description
Wire Wire Connects mechanisms. Can be placed anywhere as long as another wire of the same color is not already present. Can even be placed in mid-air without support. Currently four different colors: Red, Green, Yellow and Blue. Removed with Wire Cutters.
Triggers
Switch Switch Triggers activation upon right-clicking. Can be placed anywhere a torch can be placed.
Lever Lever Triggers activation upon right-clicking. Can be placed on the floor and on background walls
Brown Pressure Plate Pressure Plate Triggers activation when touched; different colored plates are activated by different combinations of the player, NPCs and enemies. Can be placed on the floor like furniture, and becomes partially hidden when placed.
Pink Weighted Pressure Plate Weighted Pressure Plate Desktop Version Triggers activation by player when stepping on or off it. Being practically the only trigger in Terraria that creates a pulse. Can be placed on the floor like furniture.
Teal Pressure Pad Pressure Pad Desktop Version Triggers activation when touched by projectiles or Pets. Can be placed on the floor, ceiling, or side wall but not on platforms.
Pressure Plate Track Pressure Plate Track Triggers activation when a Minecart rides over it.
5 Second Timer Timers Once activated, they will keep sending activation signals through the wire they are connected to.
Detonator Detonator Desktop Version Triggers activation when touched or right clicked, similar to pressure plates. Found in explosive traps underground.
Amethyst Gem Lock.pngTopaz Gem Lock.png
Sapphire Gem Lock.pngEmerald Gem Lock.pngRuby Gem Lock.png
Diamond Gem Lock.pngAmber Gem Lock.png
Gem Lock Desktop Version Once the Large Gem of the Gem Lock has been placed inside, the Gem Lock will trigger activation.
Trapped Chest Trapped Chest Desktop Version When it is opened, it triggers activation.
Devices
Torch Light sources Once activated, they will switch between their 'lit' and 'unlit' states.
Wooden Door Doors Once activated, they will switch between their 'open' and 'closed' states.
Trap Door Trap Doors Desktop Version Once activated, they will switch between their 'open' and 'closed' states.
Tall Gate Tall Gates Desktop Version Once activated, they will switch between their 'open' and 'closed' states.
Inlet Pump Pumps Liquid will be pumped from inlet to outlet once per activation.
Active Stone Block Toggle-able Blocks Once activated, they will switch between their 'active' and 'inactive' versions. The inactive version will let things pass through them like furniture.
Actuator Actuators Like Toggle-able Blocks, but works with almost any block it's placed on.
Dart Trap Dart Traps Will shoot poisoned darts once per activation, with a cooldown of three seconds.
Super Dart Trap Super Dart Trap A stronger version of the Dart Trap.
Spear Trap Spear Trap On activation, shoots out a spear that deals a lot of damage.
Spiky Ball Trap Spiky Ball Trap Drops several spiky balls when activated.
Flame Trap Flame Trap Shoots out a jet of flame when activated.
Geyser Geyser Desktop Version Shoots flame for a maximum of about 20 blocks.
Explosives Explosives Once activated, they will detonate instantly.
Cannon Cannon Depending on where the wire is connected, either shoots a cannonball or rotates toward the side the wire is on.
Bunny Cannon Bunny Cannon Depending on where the wire is connected, either shoots an exploding bunny or rotates toward the side the wire is on.
Music Box Music Boxes Once activated, they will play recorded soundtracks.
Bird Statue Statues (some) There are 41 statues that function as mechanisms. The other 67 statues are not. Statue mechanisms can spawn a variety of items, creatures, or teleport NPCs.
Chimney Chimney Desktop Version The chimney has three states it rotates through: Off and On, and a third state that adds smoke particles.
Teleporter Teleporter When activated, teleports the player and/or any NPCs currently standing/walking over it to another Teleporter connected by wire.
Boulder Boulder
Amethyst Gemspark Block.pngTopaz Gemspark Block.png
Sapphire Gemspark Block.pngEmerald Gemspark Block.pngRuby Gemspark Block.png
Diamond Gemspark Block.pngAmber Gemspark Block.png
Gemspark Block Will toggle "lit" and "unlit" states when activated.
Wire Bulb
Wire Bulb Lights up bulbs for each wire color.
Red Rocket Green Rocket Blue Rocket Yellow Rocket Firework Rockets Activated through Wire or by right-clicking. Creates pretty fireworks and damages enemies in the explosion. Consumed on use.
Firework Fountain Firework Fountain Activated through Wire or by right-clicking. Creates pretty fireworks.
Fireworks Box Fireworks Box Activated through Wire or by right-clicking. Creates pretty fireworks. Does not damage enemies.
Confetti Cannon Confetti Cannon Depending on where the wire is connected, either launches confetti or rotates toward the side the wire is on. Does not damage enemies.
Bubble Machine Bubble Machine Can be toggled on or off. Creates bubbles.
Silly Balloon Machine Silly Balloon Machine Desktop Version Can be toggled on or off. Creates balloons.
Pure Water Fountain Water Fountains Activated through Wire or by right-clicking. Changes the water color nearby to that of the fountain's biome.
Vortex Monolith Nebula Monolith Stardust Monolith Solar Monolith Monoliths Desktop Version Activated through Wire or by right-clicking. Changes the background to that of the corresponding pillar.
Party Center Party Center Desktop Version Activated through Wire or by right-clicking. Can be toggled off, but will turn itself off at 7:30pm. All party centers in the world are activated/deactivated by triggering one.
Land Mine Land Mine Activated when a character or monster walks onto it or when activated by Wire, dealing damage and removing it.
Campfire Campfires Activated through Wire or by right-clicking.
Portal Gun Station Portal Gun Station Desktop Version Depending on where the wire is connected, either shoots a portal, swaps portal colors, or rotates toward the side the wire is on.
Announcement Box Announcement Box Desktop Version Announces (in the chat) what was written on the sign when powered.
Other
Junction Box Junction Box Desktop Version Allows wires of the same color to cross without connecting. Can be hammered.
Logic Gate (AND).png Logic Gate (NAND).png Logic Gate (OR).png
Logic Gate (NOR).png Logic Gate (XOR).png Logic Gate (XNOR).png
Logic Gate Desktop Version
Logic Gate Lamp (Off).png Logic Gate Lamp (On).png Logic Gate Lamp (Faulty).png Logic Gate Lamp Desktop Version

See also[edit | edit source]

History[edit | edit source]

  • Desktop 1.3.2: Party Center and Silly Balloon Machine introduced.
  • Desktop 1.3.1:
    • Gem Locks, Trapped Chests, Portal Gun Station, Announcement Box, Junction Box, Geyser, Logic Gates, and Logic Gate Lamps introduced.
    • Cannon, Confetti Cannon, and Bunny Cannon can now be wired.
  • Desktop 1.3.0.1:
    • Trap Doors, Tall Gates, Monoliths, Confetti Cannon, Chimney, and Detonator introduced.
    • Two new Pressure Plates are added: the Weighted Pressure Plate and Teal Pressure Plate
  • Desktop 1.2.4:
    • Fireworks now show the wiring layout when selected.
    • Fireworks Box and Pressure Plate Tracks introduced.
    • Wiring system runs at least three times faster.
    • Longer wire systems get larger gains.
    • Fixed a bug where only one wire attached to a Lever would work when you flipped it.
  • Desktop 1.2.3:
    • Gemspark Blocks were added and can be toggled.
    • Added infinite wiring support across the map.
  • Desktop 1.2:
    • New traps are introduced: Flame Traps, Super Dart Traps, Spear Traps, and Spiky Ball Traps.
    • Actuators, Teleporters, Water Fountains, Land Mine, Bubble Machine, Firework Rocket, Firework Fountain, Cannon, and Bunny Cannon introduced.
    • Pressure Plates now have different triggering conditions based upon their color.

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