Stackable module honey farm

ianxofour's honey farm, built as a module of eight beehives in a row. Each hive gets its own dispenser and dropper, a comparator reads the honey level, and a repeater chain walks a signal along the row so only two or three modules are ever active at once. Full bottles ride out through hoppers to a chest while the empty ones circulate back to the dispensers, so the glass never leaves the system and one supply of nine stacks keeps running. The module stacks in every direction, up to 64 hives inside a 16 by 6 by 16 space, and it works in the Nether or the End where the bees never stop for night. A lever shuts it down when you leave.

Never leave glass in a slot where a hive should be. Hoppers no longer pull items through a full block above them, so every bottle flies out of the farm. Fill all eight slots with real hives before you run it.
If you need a placeholder or a wall anyway, use top slabs or upside down stairs facing out. comfybunnyy fixed a Nether build on 1.21.5 that failed every single time this way.
Do not load all nine stacks of bottles at once. DrGrim1 found the honey bottle then cannot get past the item filter and glitches out.
The last beehive, the one next to the comparator at 4:26, must not have a repeater on top of it. ManiaXXZ traced the escaping bottles to that repeater.
Chunk load the farm or shut it off with the lever before you leave. It throws bottles on the ground every time it reloads, worst of all in spawn chunks.
The bee breeder shown at the end broke in 26.2 when baby bee hitboxes changed. The farm itself still runs, you just breed the bees elsewhere.