RatOS will not connect to my mcu

Have tried different cords, when I flashed the controller it returned a .cur file like it should have, now though I cannot connect to it.
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73 Replies
blacksmithforlife
Have you looked at and worked through all the suggestions in https://discord.com/channels/582187371529764864/1046952693480038500 ?
correct-apricot
correct-apricot2y ago
Are you using RatOS? I had the same problem after updaten my SKR2. Search for the Serial ID and check if that’s correct in the config
foreign-sapphire
foreign-sapphire2y ago
Ive worked through all the suggestions and it seems like the octopus is being recognized by the pi but I think the serial id for the board may be incorrect in config
blacksmithforlife
did you flash it with the correct firmware?
foreign-sapphire
foreign-sapphire2y ago
Yes, I’ve tried the one from the firmware_binaries folder and the generic klipper one for the octopus, the klipper one shows up on ssh but with the one from ratos it doesn’t show up
afraid-scarlet
afraid-scarlet2y ago
@jeffbezosvevo I'm at exactly the same point- worked through everything in the FAQ linked, checked that the .bin changed to .cur, firmware is correct for the SKR2 board, checked all wiring
foreign-sapphire
foreign-sapphire2y ago
It just doesn’t show up or connect and I’m not really sure what else to try
afraid-scarlet
afraid-scarlet2y ago
Me either, mine is a V-Minion but I'm in the same spot.
blacksmithforlife
Did you first run COMPILE FIRMWARE?
foreign-sapphire
foreign-sapphire2y ago
Yes Is there any way to recompile without starting over with ratos?
blacksmithforlife
Yes, run the macro in the web UI
foreign-sapphire
foreign-sapphire2y ago
I recompiled and reflashed my board, no change.
blacksmithforlife
and what is the output when you run dmesg -w and then plug in your octopus?
afraid-scarlet
afraid-scarlet2y ago
Mine just returns the same 'mcu unable to connect' message, that's before and after plugging in the USB to the SKR2.
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blacksmithforlife
that is not running dmesg -w
afraid-scarlet
afraid-scarlet2y ago
Forgive me, I haven't used a Pi before- where would I run that command if not in the RatOS console?
blacksmithforlife
you need to ssh into the pi and run it on the command line
afraid-scarlet
afraid-scarlet2y ago
Okay, after a quick visit to the University of Google I've done that. 🤣 just a sec
afraid-scarlet
afraid-scarlet2y ago
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afraid-scarlet
afraid-scarlet2y ago
I apologize, I am literally learning this from scratch via Google and Discord, I appreciate the help I've only used Marlin for firmware in the past, and my only experience with Klipper has been with a Creality Sonic Pad so this is a much more in depth version. 🙂
blacksmithforlife
and while running dmesg -w did you plug in your octopus board?
afraid-scarlet
afraid-scarlet2y ago
Yeah, nothing happened
blacksmithforlife
then either (ordered form most to least likely) * you have a bad cable * something with the flashed firmware on the octopus * the board itself is broken * the port on the pi is bad
afraid-scarlet
afraid-scarlet2y ago
Okay, I verified that the file changed to a .cur on the card so I know it flashed the SKR2 firmware file to the board, but I don't have another USB-A to USB-B laying around 🤣
blacksmithforlife
Okay, I verified that the file changed to a .cur on the card so I know it flashed
I have seen people have that and yet they had to flash it again before it took correctly
afraid-scarlet
afraid-scarlet2y ago
Okay, I will try that again
blacksmithforlife
make sure to leave it long in the board - like 10 minutes
afraid-scarlet
afraid-scarlet2y ago
Reinstalled the firmware.bin file, same error still. Should I be starting over with RatOS entirely at this point?
blacksmithforlife
but did you run dmesg -w and connect the octopus again? You can start over, but not sure what that would accomplish except taking time
afraid-scarlet
afraid-scarlet2y ago
Yes, nothing changed when I plugged it in- just to be sure, the red jumpers on the board are supposed to be left alone, right? I can't tell in the diagram if they are supposed to be moved up one pin from the stock place
afraid-scarlet
afraid-scarlet2y ago
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afraid-scarlet
afraid-scarlet2y ago
There are 3 pins, the green icon shows them moved up from the actual placement but I assumed that was just someone not being super careful with the graphic
blacksmithforlife
you would assume wrong, I know @miklschmidt is very careful when he makes those also, what board is that? doesn't look like a octopus
afraid-scarlet
afraid-scarlet2y ago
It's an SKR2, as I keep saying
miklschmidt
miklschmidt2y ago
No, this is very much on purpose. The ADXL345 won't work without the 2 left most jumpers moved to the correct position.
blacksmithforlife
sorry, I didn't get any sleep last night with my wife and baby sick
afraid-scarlet
afraid-scarlet2y ago
No worries, you're doing this thankless job for nothing, lol Would that also keep the USB connection from working?
miklschmidt
miklschmidt2y ago
The one on the right would (that's the power jumper) Sorry i'm right / left blind and sometimes i forget to think before speaking. The 2 on the right is for the ADXL345, the one on the left is for power 🙂
afraid-scarlet
afraid-scarlet2y ago
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afraid-scarlet
afraid-scarlet2y ago
Is that correct?
miklschmidt
miklschmidt2y ago
yes
afraid-scarlet
afraid-scarlet2y ago
Okay, I will try again now that those are moved. 🤣 Since it only said to remove unmarked jumpers, I didn't think about moving them
foreign-sapphire
foreign-sapphire2y ago
it seems to recognize it but honestly I'm not really sure what I'm looking at here, klipper shows startup in ratos and then shows the mcu error after a bit
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blacksmithforlife
Can you upload your printer.cfg please?
foreign-sapphire
foreign-sapphire2y ago
Nevermind I guess?
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afraid-scarlet
afraid-scarlet2y ago
Still nothing on mine, but good for you! 🤣 Is there something special about the SKR2 board vs the Octopus boards that I'm missing? I'll go through it all again tomorrow.
miklschmidt
miklschmidt2y ago
Disconnect everything except power and usb, recompile firmware, flash it again, verify it shows up through ssh, then reconnect wires.
afraid-scarlet
afraid-scarlet2y ago
I've disconnected everything but the power and the USB, but it doesn't look like the board shows up through ssh... where in that dmesg -w report am I looking, and what am I looking for? I reflashed the firmware via microSD again first
miklschmidt
miklschmidt2y ago
Don't bother with dmesg, there's a lot of stuff in there to distract you. Just check if OpenMoko is present in lsusb. I'm pretty sure you just didn't flash it properly. Recompile the firmware and flash it again. Ah i see. Well check the output of lsusb
miklschmidt
miklschmidt2y ago
it should look something like this
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miklschmidt
miklschmidt2y ago
the OpenMoko being your board
afraid-scarlet
afraid-scarlet2y ago
Nope, just the Linux one. Is there somewhere else I can pull the firmware from, if what RatOS gave me isn't working?
miklschmidt
miklschmidt2y ago
Gimme a sec, i'll compile one from the 2.0 configurator
blacksmithforlife
Dmesg can be useful, I saw someone had flashed the wrong firmware because it showed up in the output Lsub won't show that
miklschmidt
miklschmidt2y ago
I don't expect someone who isn't familiar with it to be able to pick that out.
blacksmithforlife
That's why they post it here?
miklschmidt
miklschmidt2y ago
Which chip is on your SKR 2?
afraid-scarlet
afraid-scarlet2y ago
Lowering expectations is the key to helping me 🤣🤣🤣🤣
afraid-scarlet
afraid-scarlet2y ago
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miklschmidt
miklschmidt2y ago
Sure, but if it doesn't show up in lsusb, there are really only 2 options: 1) bad firmware, 2) dead board / bad usb cable. So now we try new firmware.
afraid-scarlet
afraid-scarlet2y ago
That matches the writing on the chipset
miklschmidt
miklschmidt2y ago
excellent hold on
miklschmidt
miklschmidt2y ago
😄
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miklschmidt
miklschmidt2y ago
(this is why i need 2.0 released NOW)
miklschmidt
miklschmidt2y ago
Try this one
afraid-scarlet
afraid-scarlet2y ago
I'll try it now, thanks 🙂
miklschmidt
miklschmidt2y ago
any luck?
afraid-scarlet
afraid-scarlet2y ago
Checking now Yep, OpenMoko is there now 🙂 I'll reassemble everything and see where I'm at
miklschmidt
miklschmidt2y ago
You should be good to go then. Might have to update klipper since this was compiled with the current version, but besides that, rest should just be wiring / configuration 🙂 I gotta go, good luck!
afraid-scarlet
afraid-scarlet2y ago
It lives! Thanks so much, I really appreciate it. 🙏
afraid-scarlet
afraid-scarlet2y ago
Worked perfectly once the firmware was fixed! Thanks again!
miklschmidt
miklschmidt2y ago
too close on the z offset and your hotend fan is the wrong way around (sticker goes towards the hotend). Good to hear though have fun! 🙂
afraid-scarlet
afraid-scarlet2y ago
Yeah, I caught the offset after the skirt. 🙂
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