Some people told me that the first ring was too big for their printers, so I created this little one (< 11 cm).
Link to the big one : https://makerworld.com/en/models/194247
TUTORIAL (English SUB):
All the components : https://jeje-linge.fr/pages/mini-lord-of-the-rings-lamp
Code : https://github.com/jejelinge/MINI_LOTR_LAMP
Libraries : Adafruit NeoPixel by Adafruit
This is pretty simple to make and everybody will stuck on this lamp.
YOU HAVE TO USE WHITE PLA OTHER COLORS WILL BE TOO DARK AND THE LIGHT WON'T GO THROUGH.