I made an automatic wool farm. An observer detects when grass grows/is eaten and sends an output to a dispenser with a shear, which shears the sheep. Under the grass, there is
MC-165883] Wool farm not working/Observer & dispenser not working - Jira
How to Make a Minecraft Wool Farm: Step-by-Step Tutorial
Tutorials/Wool farming – Minecraft Wiki
Minecraft: How To Build An Automatic Wool Farm
How to Make a Minecraft Wool Farm: Step-by-Step Tutorial
How to Make a Minecraft Wool Farm: Step-by-Step Tutorial
cubfan135 on Twitter: "Fully Automatic Sheep Farm for Minecraft 1.14 based on short clip by @rockenroll4life earlier today. Might need to replace fences with blocks but still, easy Wool. https://t.co/dvIlQ4yC1D" / Twitter
1.16+) THE BEST SHEEP FARM In Minecraft! - (Automatic Sheep Cooker + Wool Farm) - YouTube