river junco
I cannot connect to my printer, here is my klippy log,
mcu 'mcu': Unable to connect
Once the underlying issue is corrected, use the
"FIRMWARE_RESTART" command to reset the firmware, reload the
config, and restart the host software.
Error configuring printer
pulsar jackal
do you use UART to connect the board?
river junco
yes
pulsar jackal
do you use mainsailOS or a plain OS and installed via KIAUH?
river junco
I have mainsailos
it was working and suddenly stopped and checked everything that I could have adjust by mistake but nothing
I didnt installed it via kiauh but flashed it by the image from the main site
pulsar jackal
what was the last thing you did?
pulsar jackal
I didnt installed it via kiauh but flashed it by the image from the main site
(FYI: mainsailOS have UART enabled per default. if you use a plain OS, you have to enable UART)
river junco
the last thing when it suddently stopped is when I touched the head a litle bit and it moved a few mm. I wasnt printing. From that time I couldnt connect but maybe it wasnt that that messed it up
I had a connection and do delta calibrations and tried some prints
pulsar jackal
the last thing when it suddently stopped is when I touched the head a litle bit...
i hope you have not broken your board
river junco
I then add the hold current to the uart settings but anyway I couldnt connect. I already checked again the serial connection with the rpi and the cables
but how ?
I can flash the original firmware and check the tft 35
pulsar jackal
which board do you use?
pulsar jackal
skr 1.3 have a v3 version? can you make a foto?
river junco
it was working and did nothing
pulsar jackal
it was working and did nothing
you moved the head. this insert power to your board...
pulsar jackal
ah! mini e3. this is no skr 1.3
river junco
ah sorry
pulsar jackal
ok. you can try to flash it via SDCARD to USB to doublecheck if the board works
river junco
I will try tomorrow to flash marlin again and check via the screen yes
this motherboard has several protections for that kind of stuff, do u think that maybe could be broke n?
pulsar jackal
i hope it isnt broken... but it is possible...
river junco
I see
any other suggestions for maybe try today ? i will be in 15 hours at home and have tailscale here
pulsar jackal
nothing without touching the board itself...
you have to plug in a USB cable to check if the board is alive
river junco
if I plug a usb how I can tell that it works ?
I think that maybe also the usb is not working because when they give me that motherboard I tried to connect the rpi via usb and coulnd thats why I put it via serial
pulsar jackal
first test would be lsusb
river junco
so maybe its does not work
pulsar jackal
I think that maybe also the usb is not working because when they give me that mo...
this depends on the flashed firmware. you can set klipper to serial or usb. both didnt work on the same time
river junco
yes but its on usb at first right?
its wasnt working so I changed to serial
sudo dmesg -wH
whats that for?
pulsar jackal
without a exect error message i cannot say anything...
river junco
I used this command and I could see when I connect and disconnect the usb
pulsar jackal
then usb should be fine
river junco
but coundn connect
anyway, doesnt matter right now, I will check tomorrow and tell u
if it does not work what mb do u thing is one of the best with drivers on it
2209
pulsar jackal
the skr mini e3 v3 should fit fine. i think you have only to flash it with the right firmware settings
river junco
but it was working before
pulsar jackal
because there was the wrong settings...
river junco
what do u mean ? did u find something ? but whats the correct settings?
pulsar jackal
in the example klipper config. there are all important settings for make menuconfig
river junco
i ckecked that several times and did what the guide has written
I checked several other guides and they had the same
can u send me the one u saw ?
pulsar jackal
river junco
so if u mean # This file contains common pin mappings for the BIGTREETECH SKR mini
I have done that
pulsar jackal
i ask a friend with this board (right now per pn) and he said these settings works... (and he tries it again)
but we can try it tomorrow...
river junco
I know because they worked for me but maybe its what u said earlier, yes tomorrow
thank u
fast flare
river junco
so my board does not work
and I ordered a new one
I put the hold current to my cfg in order not to happen again
pulsar jackal
hold current have nothing todo with this
what did you checked?
and you are sure, that you have a v3 and no v2?
river junco
yes its a v3
the problem occured when I accidentally touched the head and it moved for 1 cm maybe
I had open mainsail on desktop and it closed that same time
if I had hold current it couldnt move right ?
pulsar jackal
no. you can also move it, when your steppers are off
but it is also not recommended to use hold_current, because your printer can lose microstreps when it is switching between run and hold current during the print
river junco
So the best is not to use hold current
So the hold current is for what reason?
I ordered a new motherboard but what if it happen again? I just accidentally move it while it was t doing anything, jyst siting there
Only barely 1cm
I tried to flash again marlin but it didnt change firmware. Bin so it hasnt flash anything
Then again with klipper but the same
It didnt touch the firmware file. Tried to reformat the SD but nothing.
If I has a v2 it wasnt going to work at the first place right? I also need to check a lot about the schematic and v2 is diferent than v3. V3 has 3 seprare Adjustable fan ports
pulsar jackal
v2 needs one pin up in the firmware to enable the usb port. thats the reason why i asked for it.
tmc drivers are not only for 3d printers. these are for generic usage. there will we a usecase where hold_current is important, that the steppers can cool down, when they have not to move but are on.
you can move the toolhead, but only slow. your steppers will indicate some power to your board and this can damage it
river junco
OK, I will check again and tell u with the new one in 20 daysb
pulsar jackal
so pls close this post and create a new one, if you need help with the new board.
