mcu 'mcu': Unable to connect | Mainsail | Page 1

digital token Jun 13, 2024, 5:40 PM

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of course i tried:
pi@ender3pro:~ $ ls -l /dev/serial/by-id/*
ls: cannot access '/dev/serial/by-id/*': No such file or directory

but it obviously didn't work. I also tried the fix with changing the baud rate of the config however this didnt woik either.

I am using a raspberry pi 3 B+ for an ender 3 pro with the v.4.2.7 board. The moonraker and Klipper logs are attached

I am seriously lost here, i have been trying this for a week with two different raspberry pis and all the bugfixes i can find but nothing is working

📎 klippy.log 📎 moonraker.log

blissful onyxBOT Jun 13, 2024, 5:40 PM

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carmine axle Jun 13, 2024, 5:44 PM

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Fix your tags, this has nothing to do with Mainsail, as it's just a website showing you stuff

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Send the output of lsusb

digital token Jun 13, 2024, 5:44 PM

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yeah i realised, i am just lost in the discord interface

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sorry

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Bus 001 Device 004: ID 0424:7800 Microchip Technology, Inc. (formerly SMSC)
Bus 001 Device 003: ID 0424:2514 Microchip Technology, Inc. (formerly SMSC) USB 2.0 Hub
Bus 001 Device 002: ID 0424:2514 Microchip Technology, Inc. (formerly SMSC) USB 2.0 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

carmine axle Jun 13, 2024, 5:48 PM

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Disconnect the board and see if the output changes

digital token Jun 13, 2024, 5:49 PM

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Bus 001 Device 004: ID 0424:7800 Microchip Technology, Inc. (formerly SMSC)
Bus 001 Device 003: ID 0424:2514 Microchip Technology, Inc. (formerly SMSC) USB 2.0 Hub
Bus 001 Device 002: ID 0424:2514 Microchip Technology, Inc. (formerly SMSC) USB 2.0 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

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its all the same

echo finch Jun 13, 2024, 5:49 PM

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Oh, output of sudo dmesg will be helpful, sudo dmesg -w in a second terminal to watch it while you poke and prod is useful.

digital token Jun 13, 2024, 5:50 PM

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i unfortunatelly i have no idea what i am looking at now

carmine axle Jun 13, 2024, 5:51 PM

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Doesn't matter, just execute the command unplug and replug and then send a screenshot of your terminal

echo finch Jun 13, 2024, 5:51 PM

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Yea, but I'd probably have insight as a Linux turbo nerd.

digital token Jun 13, 2024, 5:51 PM

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so just one before and one after?

echo finch Jun 13, 2024, 5:52 PM

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The last screen's worth of output.

digital token Jun 13, 2024, 5:52 PM

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thats the unplugged version

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now its plugged in

echo finch Jun 13, 2024, 5:55 PM

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Bad cable, or MCU is not powered.

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No signs of life from the acts of connecting it, so there is nothing to fix on the side of the Pi.

digital token Jun 13, 2024, 5:55 PM

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ill try a different cable then

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holy fuck its working

#mcu 'mcu': Unable to connect