A simple early-game iron farm that works in any dimension. It is a simplified version of a design by Emdy removing some unnecessary redstone components.
Iron
1.16.2+
410Iron Ingot
Rates
Iron Ingot410/h
Positives
No water or redstone
Nether-compatible
Extremely compact and simple
Negatives
Very rarely gets stuck in a state of no spawning; easily fixed (see instructions below)
Instructions
Notes
If it ever stops working, flip the trapdoor and wait till the villagers sleep, the farm should restart
For Overworld use, a second roof or lightning rod is needed.