Coffeebot

Overview

The coffee situation in a crowded office can be difficult. If you don’t get the jump on a fresh pot of coffee, you might miss out entirely. Enter coffeebot.

How It Works

Coffeebot monitors your drip coffee maker’s electrical current. More specifically, it monitors how long it takes a capacitor to discharge while the coffee maker is drawing current. Fortunately, drip coffee makers draw electrical current in three distinct phases: idle, brewing and heating.

The coffeebot keeps watches for the brewing phase. When it identifies the coffee maker as brewing, it sends a notification. When your coffee pot is done brewing, there’s another notification.

Knowing exactly when coffee is ready is an incredible power; wield responsibly.

Build Your Own Coffeebot

If you would like to build your own, the source code and wiring diagram can be found here.


Web Development, JavaScript, Raspberry Pi, Medium