GREEN = Global diff/proff count RED = Current Belt Items
SETUP Connect all your assemblers with the ingredient counter turned on, USING a wire SEPARATE from the main logic, to the combinator at the top (pipeline marked).
The manipulators that place the items from the assemblers on the bus, connect the green wire to the poles and set "On/Off Item < 0".
If you manually change the conveyor system, make sure that each element is connected to a pole with a red wire and there are no two counters
CONFIG (red combinator at the top)
M - The minimum amount of any resource on the bus X - Multiplies the total number of Assemblers INGREDIENTS by X (to regulate occupancy of the line). ~1.3 for each bus section.