As said before, This mounts a RPI 4b and converter in place of the wifi box for a CR-10 Smart Pro. I converted to Klipper. It's not perfect but it was good enough for me. Side Note.. you'll have to cut the end off of a USB cable and replace it was a 2.56 4pin JST plug if using the original MCU. The buck-boost convertor is set to 5.1 volts and wired directly to the original PSU.
I use brass thread inserts for most of my files.
The author marked this model as their own original creation.