Mount for BCN D25/W27/W50 Raspberry Pi 3B+ (Klipper Retrofit)

This is an adapter to mount a Raspberry Pi 3B+ (or any RPI with the same mounting pattern) in a BCN D25, W27, or W50 printer (It might also work on an R19 Sigma or Sigmax, but I haven't checked yet). The mount and Pi replace the original Colibri control board that is stock on these machines, so that Klipper can be configured. This design uses M3 heatset inserts for mounting the Pi.

I've also attached the Klipper configuration I've written for my Klipperized D25 as a .txt file. You can just change the file extension to .cfg and upload as a Klipper config, but you'll need to make sure the configuration is appropriate for your machine. Pin assignments should be correct for just about any BCN printer aside from the Gen II W27/W50, and the Omega. The Sigma/Sigmax R19, Sigma D25, and Epsilon W27/W50 (Gen I) all use different revisions of BCN's open-source 8-bit controller. The pinouts between revisions are the same, though. You can find info on the controller on BCN's Github: (https://github.com/BCN3D)