User:RealWormbo

Notes to self…

ilmango minecart station
Apparently the piston under the minecart is "BUD powered", and touching the string will set it off. The sequence of effects triggered that way will also move the minecart, and dispense a new one, which then replaces the old one.

The powered rails seem to have two power sources: the observer on the far right, and the redstone torch. When powered by the observer, the rail power doesn't quite reach the rails under the minecart. As far as I can tell, adding power with the torch won't cause an update, so even though the power should reach the minecart, it won't. Only when the string is updated, the powered rail realizes it should be powered by the redstone torch and activates just long enough for the minecart to be pushed off. The timing of the right part of the contraption seems to be tuned so the powered rails are first depowered, then powered by the observer and then seemlessly powered by the torch again (which also causes a new minecart to be dispensed), so the left-most connected powered rail doesn't receive the power just yet.

Finding structure bounding boxes in 1.13+

 * 1) Find the actual structure start location. Best done with a tool like Amidst.
 * 2) Find the region of the structure: Divide the X/Z coordinates by 512, rounding down to the nearest integers. (e.g.: -341/512 => -1)
 * 3) Find the chunk of the structure: Divide the X/Z coordinates by 16, rounding down to the nearest integers. (e.g.: -341/16 => -22)
 * 4) Open the world in NBTExplorer.
 * 5) Navigate to the appropriate region folder (Overworld: region, Nether: DIM-1/region, End: DIM1/region) and find the region file calculated in step 2.
 * 6) Navigate to the appropriate chunk in the region, whose world chunk indexy was calculated in step 3.
 * 7) The structure information can be found under Level/Structures/Starts.

Alternate item filter
This one was used by ilmango on top of a tileable shulker box loader. It's a bit larger than the impulseSV design, but has the advantage of not using a redstone torch directly next to the hoppers, which would have interfered with said shulker box loader. Like with the impulseSV design, the input stream (horizontal hopper chain or water stream) goes above the upper hopper, and that hopper contains one 64-stackable item in each of its four right-most slots, and up to 41 of the filtered item in its left-most slot. When using a cauldron like in the original design, it should be covered to prevent rain from filling it.

The trick with this design is that a comparator reading a container or cauldron content through a powered block will output the fill level of that container, unless the block is powered to signal strength 15. Basically, whenever an input hopper contains more than the minimum number of items, the redstone torch deactivates, so that the redstone dust below it will at most have signal strength 14 from the adjacent slots, therefore allowing the comparator to read the empty container, unlocking the middle hopper.