HARRY LE shows us how he built out a very cool LED light setup with an Arduino Uno
Source code and schematic at https://github.com/VectStudio/LED_CUBE
Here’s an interesting video discussing the origins of LED lights, why they are are important to the environment, and how blue LEDs made a massive impact on the world.
No, this is a not a device that prints LEDs, this is a type of printer technology that never caught on.