this post was submitted on 11 Feb 2024
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#3dprinting @[email protected] @[email protected] does anyone have experience with the manta m8p motherboard and canbus? I'm pulling my hair out trying to work out what's going on with mine and could really use a little help

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[–] [email protected] 2 points 1 year ago (1 children)

@thantik how do I go about that? The command the guide gave to get the serial ID only gives un adopted ones, so even on that first boot that works, they disappear

The cb1 itself is working fine on reboot as I can SSH to it and even load klipper, it just gets the MCU error.

The only way I can get any response from the board is to put it back into DFU mode and flash it again, when I do that, it gets the exact same id as the first time and connects again until reboot

[–] thantik 2 points 1 year ago* (last edited 1 year ago) (1 children)

Does your ifconfig show a can0 device? After flashing? After reboot?

[–] [email protected] 2 points 1 year ago* (last edited 1 year ago) (1 children)

@thantik no, it does not. And I just realised that running the same canbus query script throws an error that I didn't see before, saying no such device

The /etc/network/interfaces.d/can0 file is there and correct though

[–] thantik 2 points 1 year ago* (last edited 1 year ago) (1 children)

And /etc/network/interfaces.d/can0 Looks a bit something like this?:

allow-hotplug can0
iface can0 can static
bitrate 1000000
up ifconfig $IFACE txqueuelen 128

Sorry, Lemmy is mangling the shit out of formatting.

It sounds like the CANBUS board might have some sort of defect, tbh.

[–] [email protected] 2 points 1 year ago (1 children)

@thantik yup, it's identical other than the mangled mastodon indent haha

So just to check, when I reflash the board, it does show up in ifconfig but as soon as I make any changes in printer.cfg and hit save and restart, it's now not in ifconfig

[–] thantik 2 points 1 year ago* (last edited 1 year ago) (1 children)

Save and Restart should only be restarting the firmware for Klipper/Klippy -- ifconfig is part of the underlying Linux subsystem. It shouldn't disappear from there just because you restarted Klipper. I'd be willing to bet the canbus board is either flashed with some wrong firmware option (check which microcontroller is being used on it!) -- or that there is a physical defect with the board which is causing it to get stuck in programming mode on power cycle. I'm almost positive they aren't using an external eeprom on that board, which would be my next guess (bad eeprom).

From what I can discern, YOU aren't doing anything wrong.

[–] [email protected] 2 points 1 year ago

@thantik the ebb is the rpi2040 so there's only the one option for the microcontroller

The issue happens with and without the ebb hooked up and the board works fine without canbus enabled so I'm sure that's the right microcontroller

Tomorrow I'll go back through and maybe start from scratch, reflash the bootloaders and then try fresh from there

In the mean time it all works if just using USB so I always have that fallback