Warning, does not fit in Ender 5 electronics case without removing power supply.

[lococnc]

This board is larger than the other SKR Mini E3 versions and interferes with the power supply in the Ender 5 electronics case.

[earth4s]

Another fit issue with the Ender 5 Plus. The board hits the mounting poles for the touch screen.

[lpla]

I did a simple adapter for the power supply that can use short M8 screws and bolts (glued to this adapter): https://www.thingiverse.com/thing:4676935

That way the PSU gives enough space for the board to be drop-in replace. So all components fit inside the electronics case and are hold properly.

Regarding wiring, electronics case fan should be connected to the FAN2 pins. BLTouch can be connected like the SKR E3 mini v2.0 to the Z-PROBE pins (check naming: https://github.com/bigtreetech/BIGTREETECH-SKR-E3-Turbo/blob/master/Hardware/BTT%20SKR%20E3%20Turbo-Pin.pdf). See a SKR E3 mini v2.0 guide: https://linsomniac.gitlab.io/post/2020-06-20-ender3-pro-skr-v2_0-bltouch-upgrade/

And I made configuration files for Ender 5 Pro using v2.0.X Marlin with BLTouch:

Ender 5 or Pro - SKR E3 Turbo config files.zip

And without BLTouch (stock Ender 5 or Pro): Ender 5 or Pro -SKR E3 Turbo without BLTOUCH config files.zip

To compile, just use these config files and set default_envs = LPC1769 in platformio.ini file.