This is a module that handles disposal off unwanted items in a farm
it can take multiple item in the dropper at the same time with out breaking
and it can be feed from 3 directions
Repeater has to be set on 3 ticks
the lava can be replaced by a cauldron full of lave
If you replace the lava with a water stream you have a good way to empty a hopper in to a bobble elevator
CREATIONS
MINECRAFT-SCHEMATICS.COM