<p>I'm trying to set up <a href="http://octoprint.org/" rel="nofollow noreferrer">OctoPrint</a> on my Linux Ubuntu 16.04 desktop to work with my Micro3D printer. The printer works fine on Mac and Windows:
<a href="https://i.stack.imgur.com/Kmil9.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Kmil9.png" alt="enter image description here"></a></p>

<p>I've installed OctoPrint with the <a href="https://github.com/donovan6000/M3D-Fio" rel="nofollow noreferrer">M3D Fio Plugin Manager</a>. I can see the files in <code>~/.octoprint/</code> fine and I can even turn the printer fan on/off, move the extruder, etc. through OctoPrint:
<a href="https://i.stack.imgur.com/qyeCZ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/qyeCZ.png" alt="enter image description here"></a></p>

<p>But when I press the blue "Print button", there is no response. Also the files in the "upload" section are greyed out. Must I download a slicing program or something? I'm new with 3D printing in general but not with Linux. Grateful for help!</p>

[{'answer_id': 1121, 'author': 'khaverim', 'author_id': 1601, 'author_profile': 'https://3dprinting.stackexchange.com/users/1601', 'pm_score': 3, 'selected': True, 'text': '<p>I just discovered that OctoPrint only reads .gcode files for printing (apparently, unless you have a slicing software embedded in it), so I installed <a href="http://slic3r.org/download" rel="nofollow">Slic3r</a> separately, and ran</p>\n\n<pre><code>./slic3r mystlfile.stl\n</code></pre>\n\n<p>to generate a .gcode file (in the executable directory).</p>\n\n<p>Then I uploaded the .gcode file to OctoPrint and things got moving.</p>\n'}, {'answer_id': 1133, 'author': 'thopiekar', 'author_id': 1655, 'author_profile': 'https://3dprinting.stackexchange.com/users/1655', 'pm_score': 2, 'selected': False, 'text': "<p>For me it sounds like you've missed to install the CuraEngine for slicing, but I'm only guessing, as I'm not using OctoPrint at all.</p>\n\n<p>Instead I'm using Cura directly and save gcode to a SD or use USB printing for quick/small prints.</p>\n\n<p>Regrads ;)</p>\n"}]
['https://3dprinting.stackexchange.com/questions/1120', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/1601/']