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Before we can properly configure the Duet with RepRapFirmware, we must gather a list of parameters that define the mechanical operation of the printer itself. This information can be found in multiple places and will vary from printer to printer.

In the case of the Ender 3 Pro, Creality provides a download for the Marlin configuration used. You can download the Creality Ender 3 Marlin Config here:

The SD card that came with your printer may also include a copy of the Marlin files. The Marlin file we require is Configuration.h.

Some of this information can also be accessed via the LCD menu on the printer if you already have it up and running.

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