A too long video about my project building a scale model of a Christmas ornament from the city of Stralsund - a 12-pointed star with LED illumination.
1:20 About neopixels
5:30 The inspiration
7:55 Receiving the printed circuit boards
12:35 The components - a neopixel and a capacitor
14:30 3D-assembly of the circuit boards
21:25 The second hemisphere
25:30 Laying out the data track
31:50 PlatformIO and the FastLED library
38:50 Uploading the code and testing
40:25 Assembling the spikes
46:40 A Star is Born
47:00 Playing around with the code
The final source code can be found here: pastebin.com/q6zLyGcr
The OpenSCAD code to generate the spikes ca be found here: pastebin.com/Uv5Wr1Eu
it also contains code for a 3D-printed inner support which is not necessary for the pcb-construction described in the video.
Link to KiCAD: www.kicad.org/
Link to VSCode: code.visualstudio.com/
Link to PlatformIO: platformio.org/
Link to OpenSCAD: openscad.org/
I ordered my circuit boards from pcbgogo, but this video was in no way sponsored - buying 75 boards I paid about 1€ per board, that is 12€ for the boards for one star, at Aliexpress you can buy 100 pcs WS2812 neopixels in the 5050-package for about 10€.