in the direwolf20 FTB pack i have built a railcraft system to automatacly sort villagers.
first the minecart passes over an embarking track and picks up a villager it then continues untill it reaches a villager detector if the villager in the cart matches the one in the detector it activates a switch moter which causes the cart to turn and to travel over a disposal track where it drops the villager off, it is then sent back to pick up another villager. if the villager is not the same as the one...
railcraft villager sorter and selector
first the minecart passes over an embarking track and picks up a villager it then continues untill it reaches a villager detector if the villager in the cart matches the one in the detector it activates a switch moter which causes the cart to turn and to travel over a disposal track where it drops the villager off, it is then sent back to pick up another villager. if the villager is not the same as the one...
railcraft villager sorter and selector