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Building the Firmware from Configuration Files

Step	Description
1	Download the Marlin 2.0.9.0 files from https://github.com/MarlinFirmware/Marlin/archive/refs/tags/2.0.9.zip
2	Unzip the Marlin files into a woking folder. Keep track of this folder’s location.
3	Download the files the repository from https://github.com/3DP-Tech/Kingroon-KP3/archive/refs/tags/M.2090.2.zip
4	Unzip the repository files into a working folder. Keep track of this folder’s location.
5	Copy the file Kingroon-KP3-M.2090.2\Configuration\platformio.ini to the folder Marlin-2.0.9.
6	Copy the file Kingroon-KP3-M.2090.2\Configuration\Configuration.h to the folder Marlin-2.0.9\Marlin.
7	Copy the file Kingroon-KP3-M.2090.2\Configuration\Configuration_adv.h to the folder Marlin-2.0.9\Marlin.
8	Copy the file Kingroon-KP3-M.2090.2\Configuration\pins_MKS_ROBIN_MINI.h to the folder Marlin-2.0.9\Marlin\src\pins\stm32f1.
9	Compile the firmware using Visual Studio Code. There are numerous videos available on how to compile the code using Visual Studio Code with the Platform IO and Marlin Autobuild extensions. This process is extremely easy. Here is one that I like: https://www.youtube.com/watch?v=eq_ygvHF29I
10	Flash the firmware using the binary file produced as a result of step 9.

NOTE: Checking Stepper Direction

It appears that on some KP3 machines, the stepper motor wiring has been reversed. After flashing the firmware, do not attempt homing until you check the stepper motor direction. This can be done by choosing Motion from the menu and trying to move each axis independently. When moving the axis, only make small changes. If the steppers move in the opposite direction, repeat steps 6, 9 and 10 using the file Kingroon-KP3-M.2090.2\Configuration\Configuration.h.REVERSED. Rename this file by removing the .REVERSED extension.