This is a picture of a "NOT" gate otherwise known as an "Inverter". A NOT gate is gate that essentially inverts the order of the redstone signal. Usually, a lever is off, there is no signal and when the lever is on, there is a signal. However, this is the opposite. When the lever is off, the signal is on, but when the lever is on, the signal is off.
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This is a picture of a "NOR" gate. As you may have figured out from the name, a NOR gate is a combination of an OR and a NOT gate. Essentially, a NOR gate is just an inverted OR gate meaning that if either the right lever or the left lever is flipped on then the output will stop triggering rather than starting triggering.
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This is a picture of a "NAND" gate. As you may have figured out from the name a NAND gate is a combination of an AND and a NOT gate. Essentially, a NAND gate is just an inverted AND gate meaning that rather than having the output come on when both inputs are on, the output goes off when both inputs are on.
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To the left are pictures of "Counters". A counter is exactly what it sounds like. A counter will add one redstone output each time you press the button. Then eventually, it will either reset itself manually or you will have to reset it depending on which build you chose. In this case, the blue block is what you add an input in order to reset it.
P.S.: Every piston is sticky. |
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To the left are pictures of "Double Piston Extenders." A double piston extender is a simple way to extend two different sets of pistons that are attached to each other.
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To the left are pictures of "First Detectors." A first detector is essentially the opposite of a last detector. Instead of taking the last input it takes the first one and doesn't allow any more inputs. Essentially the machine shuts down until you press the reset switch. While this may not seem very useful, it actually is. A common example is on Adventure Maps where when the map creator does not to put a First Detector into the map during voice acting parts. This causes immensly annoying repetitive loops where a set of dialogue is being repeated at different times over and over when multiple presses of the button ensue. Using a first detector it will be impossible to trigger anything with a second press of the button.
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"Clocks..." A redstone clock is a device that repeatedly outputs over and over and over again. Clocks can be all different speeds from being faster than 20 times per second to being once every ten minutes. Note that for the third to last and second to last picture, both pistons are sticky and there can be any number of items in the hoppers. More will make it a longer time between pulses. Also, as you probably have figured out, more cobwebs on the last picture will mean a longer time between pulses.
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