Logic Gate Lamps

    

PC/Console/Mobile/tModLoader/tModLoader 1.3-Legacy-Only Content: This information applies only to the PC, Console, Mobile, tModLoader, and tModLoader Legacy versions of Terraria.

Logic Gate Lamps

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Statistics

Type	MechanismFurniture
Placeable	✔️ (1 wide × 1 high)
Use time	15 (Very fast)
Rarity	01*
Research	5 required

• Internal Item ID: 3602, 3618, 3663
• Internal Tile ID: 419

The Logic Gate used here is Logic Gate (AND), which only turns on when all lamps are on.

A Logic Gate Lamp is a mechanism that is placed atop a Logic Gate or another Logic Gate Lamp. The Logic Gate is activated based on its type and the states of the Logic Gate Lamps atop it. The state of a Logic Gate Lamp is toggled via wire. The Logic Gate Lamps, along with the Logic Gates, are purchased from the Steampunker.

Functions of the Logic Gate Lamp:

When a lamp is turned on and off very fast (1 game tick apart) the gate will emit a puff particle, this indicates that the logic gate only sent out ONE pulse.

When a lamp is turned on and off slowly (more than 1 game tick apart) the gate will NOT emit a puff particle, this means that the gate will output 1 pulse when it is turned on, and ANOTHER pulse when it is turned off.

This above functionality enables the creation of mechanisms similar to electrical diodes, and transistors.

Types

Type		Tile ID	Tooltip	Buy	Sell
	Logic Gate Lamp (Off) Internal Item ID: 3602	419	Place this on logic gates to add checks	10	2
	Logic Gate Lamp (On) Internal Item ID: 3618	419 (2)	Place this on logic gates to add checks	10	2
	Logic Gate Lamp (Faulty) Internal Item ID: 3663	419 (3)	Place this on logic gate lamps to randomize the activation	2	40

Notes

• Placing a faulty gate lamp above a logic gate turns it blue, overriding its normal functionality and changing its behavior entirely. For more information, see Logic Gates § Faulty lamps.
• These are flexible, so more than two Logic Gate Lamps may be used for a gate.
• The state of the lamp is inverted with activation by wire, so placing an "on" lamp can be used to negate an input. This is useful, as there are no NOT gates in Terraria due to the wiring logic.

History

 PC version

• Desktop 1.3.1: Introduced.

 Console version

• Console 1.0.1372.5: Introduced.

 Nintendo Switch version

• Switch 1.0.895.9: Introduced.

 Mobile version

• Mobile 1.4.0.5.0: Introduced.