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Before we start finding out how to install OctoPrint, let’s look at why you might want to. OctoPrint is a piece of open-source software that allows us to add WiFi functionality to any 3D printer with a USB port (which is pretty much all of them). More specifically, you’ll be able to drop files from your computer onto your printer, start/stop prints, monitor your printer via a live video feed, control the motors, control the temperature, and more, all from your web browser. Of course, with great power comes great responsibility — 3D printers have parts that are hot enough to cause fires, so make sure you have a safe setup, which may include not letting it run unsupervised.