Raspberry Pi 4B Octoprint Case with Fan

prusaprinters

<p>*This version is designed for a Raspi 4b with fan.</p> <p>If you need the 3b+ version it is linked <a href="https://www.thingiverse.com/thing:4706774">here</a>.*</p> <p>Update: Per a user request I've added a case version that uses 3mm case screws. <strong>Warning: I have two Pi4B's and neither of them have mounting holes large enough for 3mm screws. Be careful to not damage the board of your Pi.</strong></p> <p>Update: Case_Rear.stl and Case_Rear_V2.stl files have been updated to tighten up the case screw standoff holes. This will allow the 2.5mm screws to get a better bite into the plastic.</p> <p>Update: Reoriented the rear case with M2.5 nut pockets so that it is the correct orientation for printing. Also, added a rear case with nut pockets which includes a knockout panel that covers the GPIO pin slot.</p> <p>Update: Per a request by <a href="/make:724952">sekazi</a> I added a rear case with M2.5 nut pockets. Thanks to sekazi for printing and feedback.</p> <p>Update: Added Version 2 of the case.</p> <p>Version 2 adds the ability to print a clear status lamp viewing lens.</p> <p>Under brighter lighting conditions the status LEDs are difficult to see through the translucence of the version 1 case. I redesigned the case to separate the viewing lens from the case material.</p> <hr/> <p>Based on what I learned from doing the <a href="https://www.thingiverse.com/thing:3706018">remix</a> of <a href="/Licantrop">Licantrop's</a> <a href="https://www.thingiverse.com/thing:2869086">Raspberry Pi 3 B Case Bear Upgrade</a>, this is a design from scratch of my Raspberry Pi 4B case with fan.</p> <p>My Raspi 4B was idling around 56c, but after installing the fan to the 3.3V connection it is now idling at 43c. There is a low volume whine that the fan produces which is almost unnoticeable but it is there.</p> <p>*<strong>Case cover with <a href="http://www.octoprint.org">OctoPrint</a> Logo</strong></p> <ul> <li>Access to GPIO pins</li> <li>Access to camera ribbon cable connector</li> <li>Access to SD card</li> <li>MicroUSB power connector access</li> <li>HDMI port access</li> <li>Access to 3.5mm composite video/audio connector</li> <li>LAN port access</li> <li>USB port access</li> <li>Ability of monitoring status LED's through case.</li> </ul> <p>Designed to fit</p> <ul> <li>30 x 30 x 7 mm fan</li> <li>M 2.5 screw kit</li> </ul> <p>*<strong>OctoPrint and the OctoPrint logo are registered trademarks</strong>* <a href="http://www.octoprint.org">octoprint.org</a></p> <h3>Print Settings</h3> <p><strong>Printer:</strong></p> <p>HyperCube Evolution</p> <p class="detail-setting rafts"><strong>Rafts: </strong> <div><p>No</p></div> <p><strong>Supports:</strong></p> <p>No</p> <p class="detail-setting resolution"><strong>Resolution: </strong> <div><p>.2</p></div> <p><strong>Infill:</strong></p> <p>20%</p> <p><strong>Filament:</strong></p> 3D Solutech PLA <p>Whatever color you like.</p> <p><br/> <p class="detail-setting notes"><strong>Notes: </strong></p> </p><div><h3>NOTICE</h3> **If you are slicing with Cura version 4.8.0 then see the following. <p>I identified a bug in Cura 4.8.0.</p> <p>It causes a very long print time due to a slicing error.</p> <p>There are two workarounds I've found:**</p> <p><em>1. Change the line width in Cura 4.8.0 to 0.39 instead of the default 0.4.</em> <em>2. Slice with 4.7.1 or 4.9.0 and above.</em></p> <p><strong>What it is about the stl that causes the bug to show up is unknown to me. I checked with Meshmixer and the model is fine. Tried re-exporting from F360 to a new file and experienced the same issue. I opened a bug report, but Ultimaker closed it as not being able to duplicate.</strong></p> <hr/> <p>The case is designed to be printed with a .4 mm nozzle. The status LED area of the Front_Case is designed as one perimeter thick. If the case is printed with a filament that is translucent the LED indicators are visible.</p> <p>Case is printable with a .5 mm nozzle, but there may be some anomalies I've not picked up while previewing in Cura. The status LED area will be .1 mm thicker which will reduce the translucence.</p> <p>I found that printing the Version 2 viewing lens is best with 1 perimeter and 100% fill. To color the raised text, I used a black magic marker.</p> <h3>Post-Printing</h3> <p><strong>Assembly</strong></p> <p>Built in support material for the screw holes needs to be removed. I used an X-Acto knife to remove it but a drill bit works too.</p> <p>The case screws utilize either self threading into the rear case standoffs or nuts depending on the rear case that is printed.</p> <p>Needed hardware:</p> <ul> <li>Case screws for self threading rear case.<ul> <li>4 M2.5 x 10 mm screws</li> </ul> </li> <li>Nut pocket rear case<ul> <li>4 M2.5 x 25 mm screws</li> <li>4 M2.5 hex nuts</li> </ul> </li> <li>Fan Screws<ul> <li>4 M2.5 x 12 mm screws</li> <li>4 M2.5 nuts</li> </ul> </li> <li>Mounting hardware<ul> <li>2 M5 x 10 mm screws for 3030 extrusion mounting.</li> </ul> or 2 M5 x 8 mm screws for 2020 extrusion mounting.<ul> <li>2 M5 hammerhead nuts</li> </ul> </li> <li>30 x 30 x 7 mm fan</li> </ul> <h3>Additional Notes:</h3> <p>*<strong>When assembling the case to the Raspberry Pi verify that the fan screws clear the CPU heatsinks.</strong> (Screws supplied with the fan are usually longer than 12 mm.)</p> <ul> <li>To insure that the nuts do not come loose, place a small drop of glue to hold then in place on the screws.</li> </ul> <p>The above is the vendor's install directions to Connect the fan to GPIO pins of Raspberry Pi</p> <h3>How I Designed This</h3> <ul> <li>The design started as a sketched rectangle in Fusion 360 drawn around a GrabCad Pi 4B mock up.</li> <li>After extrusion to a box, and sketching in the port access and cooling slots, and adding the OctoPrint logo, came printing, testing and design changes.</li> <li>Over two weeks the case design evolved.</li> <li>Printed on my Hypercube and installed on my Kossel Delta.</li> </ul> </div></p></p> Category: 3D Printer Accessories