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The Proforge 4 is powered by Klipper firmware which is an open source 3D printer firmware developed by the very talented Kevin O'Connor.

BTT/Raspberry Pi

The Pi board is an SoC (System On a Chip) board - essentially a mini-computer. It is what runs Klipper firmware and can be considered the "brain" of the 3D printer.

BTT Octopus MAX EZ Control Board

The Octopus board is a controller board. It takes instruction from the Pi board and controls the various components on the printer. It can be considered as the "nervous system" of the printer.

Each board has its own firmware. In this stage we will set up these two firmware's - starting with the Pi board.

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