2v Geodesic Light Sphere

prusaprinters

<p>80 facets of Neopixel joy! &nbsp; Inspired by <a href="https://www.prusaprinters.org/prints/40182-geodesick-rgb-led-spheres">https://www.prusaprinters.org/prints/40182-geodesick-rgb-led-spheres</a> but designed completely from scratch to use a more consistent way of assembling the facets together.</p><p>Additional components required -&nbsp;</p><ul><li>10 6mm * 2mm Neodymium magnets</li><li>80 Neopixel LEDs</li><li>Some wire or 3 way leads.</li><li>A micro controller of your choice - I used a Pimoroni Plasma to prototype and a Tiny 2040 in the final version.</li></ul><p><br>You can get the LEDs in 100s on 10mm PCBs but I found these too fiddly. &nbsp;These will work on this design, but I made my own PCBs that were larger and have 2 outputs for 1 input, in the direction of the next facet. &nbsp; I also modelled in clips for these PCBs to hold them in place whilst soldering up.</p><p><img class="image_resized" style="width:25.61%;" src="https://media.prusaprinters.org/media/prints/136835/rich_content/cd41a7c5-4a0b-4489-8ff3-0f4f3070aab2/image.png#%7B%22uuid%22%3A%227837ae1e-3d08-48b6-933c-05582c7fe15d%22%2C%22w%22%3A380%2C%22h%22%3A393%7D"><br><br>I will share my order for my PCBs on jlcpcb so anyone can order once I figure out how :D<br>&nbsp;</p><p>Tools Required</p><ul><li>Sharp knife</li><li>Long Nose Pliers</li></ul><p>&nbsp;</p><p>Note that the 3mf files contain the settings required to print these with the best quality facet sides. &nbsp;It's worth noting that there is 0% infill until 11mm off the bed.</p><p>There are 2 facet types AAB and BBB - A and B being the 2 edge lengths. &nbsp;So AAB is a triangle with A, A and B length sides.</p><p>FullHalfAABMagnets.3mf is one complete half of the sphere with 5 AAB facets having holes for magnets. &nbsp;There is also a single BBB piece with a cable hole. &nbsp;These should be kept to one side when assembling to ensure they aren't accidentally used in the wrong place.<br><br>FullHalfBBBMagnets.3mf is the opposite half, with magnet holes on 5 of the BBB facets.</p><p>Wedges.3mf is the butterfly wedges use to tie the facets together. &nbsp;You will need to print about 20 of these.</p><h3><br><strong>Assembly</strong></h3><p>The 3mf files have pads on all the bottom layer triangle corners to help stop the corners from lifting. &nbsp;These will need to be cut off carefully with a sharp knife.</p><figure class="image image-style-align-center image_resized" style="width:29.43%;"><img src="https://media.prusaprinters.org/media/prints/136835/rich_content/93fe9ce5-ac8b-479b-af3c-88350fa4e93d/image.png#%7B%22uuid%22%3A%2280b729e1-3723-4fe0-8581-c2a76717a700%22%2C%22w%22%3A1604%2C%22h%22%3A2916%7D"></figure><p>Facets are connected by butterfly wedges. &nbsp;You start by making a pentagon shape from 5 AAB facets.&nbsp;</p><p>Slide 2 wedges on to one A side of an AAB facet &nbsp;</p><figure class="image image-style-align-center image_resized" style="width:30.05%;"><img src="https://media.prusaprinters.org/media/prints/136835/rich_content/62474f0b-09f5-434e-a95a-481238ecedc1/image.png#%7B%22uuid%22%3A%22f87f26c9-2542-4ae7-bec4-bec4307ba7dc%22%2C%22w%22%3A229%2C%22h%22%3A267%7D"></figure><p>&nbsp;</p><p>Then slide on another facet by its A side - ensuring that the B side is on the same outer edge as the first facets B side. The B faces are the outside of the pentagon we are assembling.</p><figure class="image image-style-align-center image_resized" style="width:28.29%;"><img src="https://media.prusaprinters.org/media/prints/136835/rich_content/7a01a77b-ab5e-464c-ab27-01d366893055/image.png#%7B%22uuid%22%3A%222cfad344-566d-4408-ba0c-38d4212494a8%22%2C%22w%22%3A303%2C%22h%22%3A469%7D"></figure><p>Push the wedges fully in using the tips of the nose of your pliers. This ensures that the external faces are flush also.</p><figure class="image image_resized" style="width:29.12%;"><img src="https://media.prusaprinters.org/media/prints/136835/rich_content/9bb85b08-30c8-47db-b2c4-f1660a84f151/image.png#%7B%22uuid%22%3A%22c02ceead-652e-4e0b-8eab-7ef74ff71c31%22%2C%22w%22%3A536%2C%22h%22%3A569%7D"></figure><p>Repeat this until you have a pentagon</p><figure class="image image-style-align-center image_resized" style="width:28.11%;"><img src="https://media.prusaprinters.org/media/prints/136835/rich_content/89eb482d-aa0a-4c66-864d-57d5b8405246/image.png#%7B%22uuid%22%3A%227e9b997e-6dc3-4f4c-a115-226ae8d12f23%22%2C%22w%22%3A418%2C%22h%22%3A443%7D"></figure><figure class="image image-style-align-center image_resized" style="width:29.87%;"><img src="https://media.prusaprinters.org/media/prints/136835/rich_content/3545d4ac-5b7a-4a7e-873e-115b19ef9d13/image.png#%7B%22uuid%22%3A%228ad6584f-a123-4725-bd5c-29b92ea4d228%22%2C%22w%22%3A421%2C%22h%22%3A453%7D"></figure><figure class="image image-style-align-center image_resized" style="width:28.97%;"><img src="https://media.prusaprinters.org/media/prints/136835/rich_content/0173d98d-0809-4315-b38e-c39c8efc408a/image.png#%7B%22uuid%22%3A%2226ec036b-aacc-4ed2-b509-b76a45e4a5c9%22%2C%22w%22%3A399%2C%22h%22%3A442%7D"></figure><p>Lock this altogether with 2 more wedges in the newly adjacent facets.</p><figure class="image image-style-align-center image_resized" style="width:30.22%;"><img src="https://media.prusaprinters.org/media/prints/136835/rich_content/61450f03-3382-4a6e-83a3-c88d1253bc2c/image.png#%7B%22uuid%22%3A%228f841169-8774-4d63-a3cf-efabf19027c9%22%2C%22w%22%3A362%2C%22h%22%3A392%7D"></figure><figure class="image image-style-align-center image_resized" style="width:30.52%;"><img src="https://media.prusaprinters.org/media/prints/136835/rich_content/341a192c-da73-4c26-a194-1c39fb55ae80/image.png#%7B%22uuid%22%3A%2264d149b0-1a63-46c1-a577-f86f901fc301%22%2C%22w%22%3A398%2C%22h%22%3A399%7D"></figure><p>Next you need to add 5 BBB facets to each of the pentagon factets</p><figure class="image image-style-align-center image_resized" style="width:31.53%;"><img src="https://media.prusaprinters.org/media/prints/136835/rich_content/f723c660-e090-466b-9cec-ab72bdf2b155/image.png#%7B%22uuid%22%3A%221e582de7-103b-4297-b89e-2c383e0535e5%22%2C%22w%22%3A533%2C%22h%22%3A768%7D"></figure><figure class="image image-style-align-center image_resized" style="width:38.9%;"><img src="https://media.prusaprinters.org/media/prints/136835/rich_content/0a6c237d-10fe-4cb6-b43d-dc93b2db1504/image.png#%7B%22uuid%22%3A%221de07156-bbd5-4a40-9d91-48a826eb92f8%22%2C%22w%22%3A550%2C%22h%22%3A545%7D"></figure><p>Now you need to make 5 more pentagons in the same way as the first. &nbsp;If you are assembling the AAB Magnets 3mf, ensure that there is one facet with the magnet hole on the outer edge of each pentagon.</p><p>Insert 2 wedges on one side only of each of the stars V and slide the pentagons in. &nbsp;Then lock them in place with 2 more opposite wedges.</p><figure class="image image_resized image-style-align-center" style="width:50%;"><img src="https://media.prusaprinters.org/media/prints/136835/rich_content/129adfc0-9733-4026-ba33-a0d07dd95875/image.png#%7B%22uuid%22%3A%22a59b8fa4-3484-4ccf-8495-082e8764ccbf%22%2C%22w%22%3A552%2C%22h%22%3A569%7D"></figure><p>All that is left to to to finsh one half now is to fill in the remaining gaps with 5 more BBB facets. &nbsp;If you are assembling the BBB Magents 3mf, ensure that the magnet holes are on the outer edge.</p><figure class="image image-style-align-center"><img src="https://media.prusaprinters.org/media/prints/136835/rich_content/4865a737-0e8b-4a9d-a028-bdec3ef650b5/image.png#%7B%22uuid%22%3A%2220237aea-9db8-492f-b12f-6e1cb7fc5599%22%2C%22w%22%3A537%2C%22h%22%3A585%7D"></figure><p><br>&nbsp;</p>