Creality Ender-3 station (LCD + Raspberry Pi 4)

This is a simple remix of drakaz design adapted to the Raspberry Pi 4 Model B (original was for Pi 3).

I also added 2 holes in the back to integrate:

• a push button to start/stop the Raspberry Pi
• a Led to have a feedback on Raspberry Pi status

I used this tutorial to activate button/led support.

Original design was compatible with Raspberry Pi 3. 

I made it compatible with Raspberry Pi 4.