Option 'serial' is not valid in section 'mcu'

General Discussion
1

Basic Information:

Printer Model: Raise3D N1
MCU / Printerboard: Octopus Pro V1.0/Raspi 3B

klippy.log (120.0 KB)

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Describe your issue:

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I updated Klipper to v0.12.0-131-gd9043345, and flashed to corresponding firmware to my Octopus Pro as well. When I issue the 'ls /dev/serial/by-id/* command, I get the output seen in the above screenshot, yet when I start the printer I get Option ‘serial’ is not valid in section ‘mcu’

This setup was working fine when I was still on v0.11.something releases. I’m sure I am overlooking something simple, but I just can’t figure it out..

Thanks in advance.

2

You either use a serial or a canbus_uuid.
For your Octopus you currently set up both:

[mcu]
serial = /dev/serial/by-id/usb-Klipper_stm32f429xx_22002B001450304738313820-if00
canbus_uuid = af1b05b21db2

As this MCU should be connected to the RasPi via USB just use the serial parameter and delete the canbus_uuid.

3

@LifeOfBrian Thank you…I knew I was overlooking something simple and your response reminded me of exactly what it was.

Long story short, I am actually using CANbus, because I also have an EBB42. I completely skipped over all the CANbus stuff, because out of 3 printers on Klipper, this is the only one I have using CANbus. Anyway, after correcting that, and flashing the EBB42 (just in case) I am back in business.

Thanks!