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Editing v0.31:Repeater
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In ''Dwarf Fortress''<sup>1</sup>, a '''repeater''' is a device which creates a never-ending cyclic on/off signal. Several designs are possible, and they can be made to operate at varying rates. They (usually) use fluid or creatures to trigger pressure plates to create a cycle, continually trigger the plates, which can then also be linked to automatically and ceaselessly trigger external systems. | In ''Dwarf Fortress''<sup>1</sup>, a '''repeater''' is a device which creates a never-ending cyclic on/off signal. Several designs are possible, and they can be made to operate at varying rates. They (usually) use fluid or creatures to trigger pressure plates to create a cycle, continually trigger the plates, which can then also be linked to automatically and ceaselessly trigger external systems. | ||
| − | Fluid uses the natural flow and varying depths to trigger plates. Creatures use | + | Fluid uses the natural flow and varying depths to trigger plates. Creatures use {{L|path|pathing}}, opening and closing doors to attract the creature to step on the plates. |
As a general warning, always have a way to turn off the repeater, and/or allow your dwarves later access for repairs or modifications. | As a general warning, always have a way to turn off the repeater, and/or allow your dwarves later access for repairs or modifications. | ||
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===Fluid repeater=== | ===Fluid repeater=== | ||
| − | One example | + | One example {{L|fluid logic}} repeater (described on the [http://www.bay12games.com/forum/index.php?topic=33563.msg495183#msg495183 forum] by [http://www.bay12games.com/forum/index.php?action=profile;u=16168 AncientEnemy]) is as follows: |
≈≈≈≈≈ - river or brook | ≈≈≈≈≈ - river or brook | ||
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╚═╝ | ╚═╝ | ||
| − | This repeater toggles fairly slowly, about once every 300 steps, making it suitable for operating | + | This repeater toggles fairly slowly, about once every 300 steps, making it suitable for operating {{L|bridge|bridges}}, {{L|floodgate|floodgates}}, and {{L|Trap#Upright Spear/Spike|upright spikes}}. As an added bonus, the bottom wall (immediately beyond the floodgate) can be removed and connected to a cistern whose water level will be automatically maintained at a level between 3 and 4 deep. |
===Goblin repeater=== | ===Goblin repeater=== | ||
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This is not as regular a repeater, but just as reliable in the long run. | This is not as regular a repeater, but just as reliable in the long run. | ||
| − | A goblin or creature is placed (via | + | A goblin or creature is placed (via {{L|Activity_zone#Pit.2FPond|pitting}}) in a loosely circular hall with one {{L|door}} and one {{L|bridge#Drawbridges|drawbridge}} leading to a single path out. Beyond these is the bait - an exit, a {{L|restraint|restrained}} animal, or just your fortress in general - something the creature wants<sup>1</sup>. One path is open, and the goblin heads that way to kill the animal. A pressure plate is stepped on, which shuts one path and opens the other<sup>2</sup> (and triggers an exterior system). The goblin reconsiders his path, and heads back around for the other hallway - where the process is repeated. |
| − | # For instance, if using a | + | # For instance, if using a {{L|rhesus macaque}}, some item of value would suffice to attract the creature. |
| − | # Doors and drawbridges open alternately when connected to a | + | # Doors and drawbridges open alternately when connected to a {{L|trigger}}. |
A A = bait animal (or similar) | A A = bait animal (or similar) | ||
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===Pump-based repeater=== | ===Pump-based repeater=== | ||
| − | This repeater will send regular signals at a frequency determined by the speed of | + | This repeater will send regular signals at a frequency determined by the speed of {{L|pressure plate}} recovery. The basic design consists of 4 {{L|screw pump}}s and 4 {{L|pressure plate}}s but other versions are possible, depending on the number of separate steps you need. |
[http://www.bay12games.com/forum/index.php?topic=34407.msg572324#msg572324 Forum thread] with description and explanations. | [http://www.bay12games.com/forum/index.php?topic=34407.msg572324#msg572324 Forum thread] with description and explanations. | ||