Octopi is a 3D print management tool that runs on a Raspberry Pi. The Pi communicates with the printer via serial over USB to coordinate print jobs and report on their progress.

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Octopi is a basic Raspbian instance running Octoprint, a printer management service and web interface.

A Raspberry Pi running Octopi mounted on the 3D printer
Octopi's webcam is focused on the print bed
The Octoprint web UI dashboard
Octoprint's web UI allows near complete control of 3D printers

I have my Octopi connected to my Home automation setup, making it easier to monitor and respond to print progress remotely.

This article is part of the 3D Printing set.