Compak K10 Conic PID Auto Doserless Espresso Grinder - Crazy James/Barefoot Mod
One of the famous Compak espresso grinder mods we did to get unbelievably consistent dosing with a single button push with infinite adjustability.
YES it is controlled by a PID. NO it is not a timed grinder (those are silly)
This grinder has rare earth magnets and it counts the revolutions of the burr set. It is stupidly accurate and consistent. You set the number of revolutions on the PID and the grinder spins the grinder exactly that many times, every time.
It doesnt look pretty and it could use some new burrs ($168 new from Compak) but this is a rare, incredible grinder with a boatload of history.