Did you know you can manage your 3D printer over LAN? It's easy to with OctoPrint and a Raspberry Pi 2. Learn how to set up Octoprint.
The New Network 3D Printer app from Microsoft can upgrade your 3D printer with wireless connectivity using a Raspberry Pi.
The creator of the Octoprint web interface for 3D printing requests support via Patreon to continue development of open source software.