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
Tiny, Fully Auto Sheep Farm -- No Timers Needed : r/Minecraft
MC-165883] Wool farm not working/Observer & dispenser not working - Jira
Tutorials/Wool farming – Minecraft Wiki
Automatic sheep shearing farm, you can link many of these up, but here... | TikTok
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