Klipper reports: ERROR mcu 'mcu': Unable to connect | VORONDesign | Page 1

willow field Sep 10, 2024, 2:31 AM

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I've been working on a LDO Voron 2.4r2 Rev c 350mm on and off for a few months. I started working on it again today. When logging into klipper I'm getting the Klipper reports: ERROR mcu 'mcu': Unable to connect. I have looked at the log but nothing sticks out to me. I'm new to klipper and Voron's. Can anyone help me out?

celest oasis Sep 10, 2024, 2:33 AM

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willow field I've been working on a LDO Voron 2.4r2 Rev c 350mm on and off for a few months. ...

I mean...where are you in the process? have you flashed firmware onto the octopus?

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Have you informed klipper of where to find the octopus?

willow field Sep 10, 2024, 3:30 AM

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I put Klipper on the boards. I thought I had everything configured. I believe I have but I may ne mistaken what your talking about.

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I can add my log if that would help.

celest oasis Sep 10, 2024, 3:36 AM

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willow field I can add my log if that would help.

yes, a log would be useful

willow field Sep 10, 2024, 3:36 AM

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📎 klippy.log

celest oasis Sep 10, 2024, 3:37 AM

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willow field

that looks like you left out about half the ID

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serial = /dev/serial/by-id/2B0032001750535556323420-if00

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what exactly is the output of ls /dev/serial/by-id/* ?

willow field Sep 10, 2024, 3:38 AM

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in SSH?

celest oasis Sep 10, 2024, 3:38 AM

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yes

willow field Sep 10, 2024, 3:40 AM

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I just got a right facing arrow

celest oasis Sep 10, 2024, 3:40 AM

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wat?

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show

willow field Sep 10, 2024, 3:41 AM

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/dev/serial/by-id/usb-Klipper_stm32f446xx_2B0032001750535556323420-if00

celest oasis Sep 10, 2024, 3:41 AM

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so that, vs what you put in your config:
/dev/serial/by-id/2B0032001750535556323420-if00

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notice how there's a whole chunk missing in the middle?

willow field Sep 10, 2024, 3:42 AM

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I have it in my printer.cfg

celest oasis Sep 10, 2024, 3:42 AM

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but you don't

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look at it

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/dev/serial/by-id/usb-Klipper_stm32f446xx_2B0032001750535556323420-if00
/dev/serial/by-id/2B0032001750535556323420-if00

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LOOK AT IT

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ONE IS WAY LONGER THAN THE OTHER!

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because there's a whole chunk missing in the middle!

willow field Sep 10, 2024, 3:43 AM

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Thats asnippet form printer.cfg

celest oasis Sep 10, 2024, 3:44 AM

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do you or do you not see the letters usb-Klipper_stm32f446xx_ in the output of the LS command?

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because I sure do

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but you left all of that out when you copied it into your printer.cfg

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which makes it not the same!

willow field Sep 10, 2024, 3:45 AM

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I understand what your saying I will copy it for ssh to Klipper.

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Thanks. That fixed that error. Now to figure out the next. Looks like I could have several errors

celest oasis Sep 10, 2024, 3:50 AM

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reviewing your config and setting all the things it tells you to set is definitely an expected step of the process

willow field Sep 10, 2024, 3:53 AM

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I thought I did. I have a Klicky probe. Might have to do something with that setting.

celest oasis Sep 10, 2024, 3:53 AM

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I mean, I'm just handwaving. Obviously I don't know specifically what you're looking at right now

willow field Sep 10, 2024, 3:53 AM

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AH

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Thanks again for the help

celest oasis Sep 10, 2024, 4:11 AM

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willow field Thanks again for the help

no problem

#Klipper reports: ERROR mcu 'mcu': Unable to connect