There is many possible ways to build your own Orbital structure. Beside electronics, the most important thing you'll need is a way to have a circle of addressable LEDs.
== Orbital FIXME ==
For our hackerspace version, we've build this circle using flat aluminum extrusions (3 pieces of 1.70m, bolted together) and zip-tying some flexible LED strip to these extrusions. This gives you a sturdier circle but is still quite flexible so you'll have to attach it in multiple points.
File:Orbital-stucture-installed-on.jpg|And we have light!
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== Orbital Portable ==
For Orbital Portable, we thought carrying a 1.60m diameter circle was annoying, so we created a Japanese fan-like wooden structure to form an 8-arms star. We then placed the LED strip inside a nice silicon diffuser to give it some rigidity and hold it in 8 points using aluminum brackets.
* LED Pixel Ring: 45 LEDs https://www.aliexpress.com/item/1005002289201149.html
* ESP32: running WLED https://www.aliexpress.com/item/32959541446.html
== Tips ==
* We used a 5m LED strip with 60 LED/m to have a nice an big circle. Thus said, it can totally work with any length and LED density.
* Prefer short data cable from the Raspberry Pi to the LED strip. Long unshielded cables can lead to weird behavior.
* The Raspberry Pi Zero W has a very nice form factor but is also very slow. We'd like to test with the Raspberry Pi Zero 2 W and we'll probably recommend it.
= Chronology =
* [https://github.com/Pecamo/orbital Source code on GitHub]
* [https://orbital.run Portal for Orbital-Portable]
* [https://youtu.be/HKIx03cR7d4 Video presentation (in French)]
= Participants =