Creality Ender-3 station (LCD + Raspberry Pi)

This is a station for using Raspberry Pi3 B+ with Creality Ender-3 (Octopi/Octoprint) and also to protect electronics of printer LCD.

05/01/2020
I made 3 different versions:
1) ender station (clean station just to support Raspberry Pi 3 B+ and protect electronics of printer LCD)
2) ender station C (same as number 1 but with Camera support and cable camera passthrough)
3) ender station BFC (same as number 1 but with Button hole, Fan hole, Camera mount and cable camera passthrough)

This version is upgraded and has some fixes:
-better tolerance to fit Raspberry Pi
-perfect LCD fitting
-better extrusion 4040 fitting

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Instructions for adding a power pushbutton with status indicator LED:

Power button:
1) connect GPIO3 and GND (pin 5 and 6) to pushbutton
2) edit your /boot/config.txt file and add the following line:
dtoverlay=gpio-shutdown,gpio_pin=3
3) I use a power switch to power on (and to