Question Abt Klipper New Install

Basic Information:

Printer Model:
MCU / Printerboard:

Fill out above information and in all cases attach your klippy.log file (use zip to compress it, if too big). Pasting your printer.cfg is not needed
Be sure to check our “Knowledge Base” Category first. Most relevant items, e.g. error messages, are covered there

Describe your issue:

…Is there a printer. cfg for Ender 2 Pro? I just installed Klipper but it won’t work, it keeps saying, “option serial in section mcu must be specified” what does that mean?

You have no serial port specified.

You may look here:

Please attach your printer.cfg to your next post.

I see.

So I like to point to the Klipper docs. They are more than valuable for understanding, installing and setting up of Klipper.

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You should read through the documentation.
I sounds you just installed Klipper onto a SBC but did not yet flash the printer board and did not configure anything (right).

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Best approach is working through Installing Klipper with KIAUH from start to end

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As I just had the same error: how is your primary MCU defined in the printer.cfg?
Did you give it a custom name? If so, undo this.
Just have a plain

serial: /dev/serial/by-id/xxx_your_own_id_xxx
restart_method: command

for it.

Additional MCUs can have custom names.
See: Configuration reference - Klipper documentation

The ultimate reason.

Then either go through the link @Sineos posted or try something from here without warranty:

Best is the Klipper documentation to understand how things work and what to set up.

If you already have Mainsail or Fluidd up and running you can upload the files there.
But your questions show that you know nothing and should read and follow the above links at first.
Otherwise you risk to damage something easily.

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