I only have a Arduino Nano with headers soldered on  ATM so I have to expose it to keep the design compact, in next update, I will update the cover to hide the controller

For the best result, use 2 color print, either AMS or:

1. Print the cover face down
2. Print the first 2 layers with white/transparent filament, I used Creality's white Hyper PLA, this step is to used to diffuse the LEDs
3. Pause and change filament
4. Print the rest of the cover with any black filament to block light bleeding

For videos and code see

https://github.com/Yuke-hd/ACC-telemetry-dashboard/tree/main