James245 just shared a new project: "Coffee Grinder With Arduino"
Using a few bits and pieces, this ordinary coffee grinder now has two presets to run the motor for a programmable length of time. The idea being that the grinder running for a set amount of time will deliver a certain amount of coffee each button press meaning the beans can be stored unground, keeping them fresher for longer.
I completed this project for a friend, Ian, who lives for coffee. Ian wanted the same functionality in his old coffee grinder that his newer coffee grinder has (decaf and regular coffee grinders respectively).