Print Startup Issue with Prusa Firmware 3.12.0-RC1 for MK3

Dear all
I guess the new Prusa Firmware will be soon released. I encounter an issue when transmitting files via 3DPrinterOS to my updated machines.
In that firmware, there is a new thermal model protection. When I want to start a print with 3DPrinterOS, the MK3 will not start but reacting immediately with thermal panic, shutting itself down even before heating up.
When starting the same print file from the SD card, it works. So my interpretation is that your software is causing the panic reaction.
My installed version of your software is v7.9.6.405_beta

Dear user,

The issue, most likely, has nothing to do with 3DPrinterOS.
Please make sure that you perform a firmware calibration properly.
And had addded a M310 S1 line to your start gcodes.


Calibration workflow:

  1. M503 - reads the current settings (writes them down)
  2. M310 A F1 - starts the autotune calibration process, which takes around 15 minutes
  3. M310 S1 - enables the thermal model after it has been fine-tuned
  4. M500 - saves the settings to the printer
  5. M503 - ensure that the M310 values are stored correctly (compare them with initial M503 readings)

Otherwise, please enable a Verbose logging, replicate the issue and upload your logs by clicking Report problem.

Thanks a lot for your answer. I’ll check that.

I rechecked. Your workflow in the answer is for BETA1 version. I would have not reported that. The actual version is RC1 and the calibration workflow already automatic. Since the same file can be printed from the SD card but not with 3DPrinterOS, I still believe it must be your software. I enabled Verbose mode and uploaded the logs. Thanks

Judging by the log, there is an thermal issue.

2022-12-07 13:58:44,796 Read thread/register_error Error(repeat) N201. Printer: b’TM: error |1.408101|>1.200000’
2022-12-07 13:58:45,065 Read thread/register_error Error(repeat) N201. Printer: b’TM: error |1.514139|>1.200000’
2022-12-07 13:58:45,335 Read thread/register_error Error(repeat) N201. Printer: b’TM: error |1.588063|>1.200000’
2022-12-07 13:58:45,336 Read thread/register_error Error N201. Printer: b’TM: error |1.588063|>1.200000’

Most likely, that is got something to do with difference in start gcodes.
Could you provide me with first ~100 lines of the gcode that you had print successfully from an SD card?
Or just a start gcodes, that this print was sliced with.

Did the failed print was sliced with 3DPrinterOS Cloud Slicer?
You can try to upload the same gcode into the 3DPrinterOS Cloud(the one that you had sliced and printed from an SD card before.)
And try printing exactly the same gcodes, but using 3DPrinterOS Client.
If the issue will be gone, than we would definitely need see the start gcodes of your slicer.

Hi Vladimir

Most likely, that is got something to do with difference in start gcodes.
Could you provide me with first ~100 lines of the gcode that you had print successfully from an SD card?
Or just a start gcodes, that this print was sliced with.

I also believe it has to do with the start gcode. I will attach the first 100 lines below.

Did the failed print was sliced with 3DPrinterOS Cloud Slicer?
You can try to upload the same gcode into the 3DPrinterOS Cloud(the one that you had sliced and printed from an SD card before.)
And try printing exactly the same gcodes, but using 3DPrinterOS Client.

I just tried to slice in 3DPRINTEROS and print. Printer reacts the same way as when I upload finished code. I use very much the multimaterial print so I need to slice in PrusaSlicer.

If the issue will be gone, than we would definitely need see the start gcodes of your slicer.

Unfortunately, issue is not gone.

Here the first lines of the gcode, generated in PrusaSlicer:
; generated by PrusaSlicer 2.5.0+MacOS-arm64 on 2022-12-06 at 15:40:02 UTC

;
; thumbnail begin 160x120 17524
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