This repository provides a preconfigured version of Marlin that is optimized for The V1Engineering.com machines.

This is currently a work in progress. If you are just looking to download firmwares, this probably isn't the right place to be.

Start with the .github/workflows/builds.yml file. That tells github when to start a build, and which steps to take to complete a particular build.

These are the main steps:

• Check out a fresh copy of the MarlinFirmware.
• Call "config-for-machine", which will change the Configuration.h, Configuration_adv.h, etc. for that particular machine.
  • This calls a particular machine setup file, like src/configs/V1CNC_Rambo_Dual
  • This calls specific groups of configs, such as configuring it for a CNC, rambo specific choices, and accessories such as an LCD and dual endstops.
• Call platformio to verify the build works (test) and produce a firmware file.
• Collect the Marlin folder and zip it up. Also collect the firmware file.

To really take a deep look at how Marlin gets set up for a particular build configuration, take a look at src/configs/V1CNC_Rambo_Dual, and then find each file it uses to configure Marlin, such as src/configs/boards/rambo.

The configs are broken into different categories:

• common:
  • v1-base-config: which changes some names to V1, and sets the Bootscreen.h.
  • cnc, 3dp, zxy: Run one of these to set the machine type.
• boards:
  • Each board type has a file here for configuring the build for that particular board.
  • This can get a little messy, because a titan aero extruder has different steps/mm on a mini rambo than on a ramps.
• accessories:
  • These are board and machine type "independent" features. For example, dual endstops, or aero-extruder

If you want to change any of the configurations, make the appropriate changes to the configs/ scripts, push to a new branch, and then let github actions build a .zip for you. Download the zip, and look at the Configuration files it produced. You should then also do a runtime test by flashing the board with the firmware file, or flash it through arduino.

Don't forget to set the version number in src/core/version. I don't have a good way to do that automatically.