This print is a fun little project of mine to get the same quantity of coffee every time. You'll have to adjust the counterweight by trial and error to get the right weight.
Few supports are needed. It can be printed in PLA with 0.3mm height.
Video here : https://www.reddit.com/r/functionalprint/comments/ohjarg/a_coffee_dispenser_with_accurate_dosing/
The author hasn't provided the model origin yet.