A collection of various circuits that automatically drop all received items as entities. The blue designs on the left are 2x hopper speed and the ones on the right are 1x. This is not an exhaustive list and designs can/should be modified to fit your use-case, like replacing the note blocks with trapdoors for pre-1.13 compatibility.
Note:
- All designs are unbreakable with random input, excluding C3 and D3 but only if they are powered externally or if they receive items at greater than 1x speed
- The piston in C3 will clock when receiving items and power the dropper twice as often then needed