User:Pirateswithfleas/xpfarmv1/sorter

This mechanism is a little complicated and we have some wires that have to cross, so that gets a little tricky as well. The idea here is that we take mobs from the 3x3 drop area and wash them all eastward (you could go any direction that you wanted to, but we're going East). We have enough head room here for 1x1x2 mobs to be swept into a cute little 1x1 hole, although we wont rely upon that actually happening, while the spiders are forced off of a ledge through which bipedal mobs will not fit. Through the clever use of a timer and pistons, we then encourage mobs of various shapes to fall down the chutes that we have specially made for them.

Layer 235 -- This layer goes immediately below the collector.

Layer 234 -- This layer contains the timer and majority of the circuit. The lever in the center of the timer is for giving it an initial signal, which should be very brief (only occupying one repeater at a time, as shown). The top slabs on column 6 attached to the sticky pistons push bipedal mobs west by knocking them in the head, but miss spiders. Blocks used to conduct power are marked as SB (solid blocks, the yellow ones) -- I'm using birch planks for clarity's sake, but you can use whatever you like.

Layer 233

Layer 234 The two pistons in column 1 push the spiders. They won't actually push them off however, there will be 1-2 spiders sitting on that ledge at all times. But a subsequent spider will push them off. The piston at 5, 0 is there to catch those mobs who manage to make it to the platform beyond the initial drop chute, which can happen if they attempt to move in that direction when being pushed into the chute. The result will simply be that these mobs fall one less step than others and have one more HP.

Layer 233 -- Drop area for spiders tapers out, robbing them of a sufrace to climb and break their fall. Bipedal mobs fall down a 1x1 chute.

Layers 213-232 -- This is the remainder of the two chutes. Every other column of the spider chute (right) can be omitted to save materials, but each of the four columns of the bipedal chute must be present.