Heating disabled by safety timer  

RE: Heating disabled by safety timer

Hi, this most likely is The bug that prompted the release of 0.6.1.
The other symptom is the printer ends up in an ERROR state in Connect.
It often happens during a filament change or any other state prompting ATTENTION
So please update to 0.6.1 or wait for 0.7.0, I keep hoping it's coming soon but it keeps not doing that :/
Sorry for the failed prints and I hope this fixes your issue.

RE: Heating disabled by safety timer

This is a common error with and without prusa connect.  It comes and goes.  Not sure of the cause.  

RE: Heating disabled by safety timer

Posted by: @tojik

Hi, this most likely is The bug that prompted the release of 0.6.1.
The other symptom is the printer ends up in an ERROR state in Connect.
It often happens during a filament change or any other state prompting ATTENTION
So please update to 0.6.1 or wait for 0.7.0, I keep hoping it's coming soon but it keeps not doing that :/
Sorry for the failed prints and I hope this fixes your issue.

Thank you! I'll update to 0.6.1 and see if this will help elevate the issue.

Is there anything I can do with regards to providing you with information that will help you fix this going forward for future patches/updates?

RE: Heating disabled by safety timer

Sadly no, preventing bugs is pretty hard. People mostly solve it with automatic tests. But even those cannot simulate the real world conditions well. The more elaborate tests, the harder it is to change things  So as with everything, it's a tradeoff between developement speed and the amount of bugs.

RE: Heating disabled by safety timer

Hey i got the same problems with Version 6.1 ... It worked perfecly for like a month but now (since 2days ago) every print fails 😭  did something change in this time? 

RE: Heating disabled by safety timer

The only thing that might have changed is the temperature, we're in the hottest parts of summer and the Pi's might be throttling, which sadly exacerbates the bug :/

RE:

Posted by: @cwbullet

This is a common error with and without prusa connect.  It comes and goes.  Not sure of the cause.  

Yes, I've found that this will sometimes occur right when I launch an ABS print, after preheating the machine for 15 minutes or so.  It will error out and refuse to start the print.  I'll typically re-preheat for maybe 30 seconds or so and launch the print again and it will go.

I do agree that such a safety timer is a Good Thing, so I consider this to be a minor annoyance.

RE: Heating disabled by safety timer

Although I didn't encounter this particular error, I was experiencing WiFi disconnections on my Pi Zero 2 W due to heating issues (probably). I made a custom Pi mount and haven't had any so far since then. Please note you'd have to replace the Pi's header pins with some extra-mega-long ones should you decide to make one for yourself.

RE: Heating disabled by safety timer

Posted by: @jsw

Posted by: @cwbullet

This is a common error with and without prusa connect.  It comes and goes.  Not sure of the cause.  

Yes, I've found that this will sometimes occur right when I launch an ABS print, after preheating the machine for 15 minutes or so.  It will error out and refuse to start the print.  I'll typically re-preheat for maybe 30 seconds or so and launch the print again and it will go.

I do agree that such a safety timer is a Good Thing, so I consider this to be a minor annoyance.

That sounds about right - ABS and PC Blend for me.  

RE: Heating disabled by safety timer

That sounds about right - ABS and PC Blend for me.

I don't do many PC Blend prints, but when I do I will set preheat to ASA and either manually goose the nozzle temp a bit, or just let the .gcode do it.

I admit that I have not updated the firmware since I added the MMU2S, which is over two years ago.  Why?  Ain't broke, don't fix it.  I assume that the newer firmware has a preheat for PC Blend as well.  What's on the machine now works very well and I don't want to risk any 'upgrade' issues.  I will upgrade when there is a definite reason to do so and a PC Blend preheat is not enough.

RE: Heating disabled by safety timer

There might be something else, but the error with the safety timer most of the time should be that PrusaLink fails - stops sending gcodes, which leaves the printer heating, but idle, after 30 minutes, it will just disable the heating. The real error there is my code. If it were my personal project, i would not wait around for internal testing, I'd just put out a 0.7.0-test and ask nicely for you to try and use it, and patch stuff as fast as I could, because we're now effectively waiting for pieces to fall into place. I am supposed to test too, but my room is nearing 30 °C, so I'm not going to run a printer here. I tried, it sucked.

RE: Heating disabled by safety timer

1. Isn't it possible to just loard the gcode via prusaLink onto the sd card? And start the print from it ? So Incase of a pi failure it still continue the print? 🤔 And after the print erase the gcode from the sd card? 

RE: Heating disabled by safety timer

Hi, the feature would be highly impractical, let's do some maths. Our printers talk at a baudrate of 115200, that works out to 11.5 kilobytes per second, meaning, given no overhead, no telemetry when uploading and definitely no additional integrity checks, a 35MB print would be uploading for a cool 51 minutes and could start printing only after that is done. Sorry for making such a silly mistake, i'm sure there's more of those waiting to be made, I just hope it will be something less critical next time.

RE: Heating disabled by safety timer

Oh sorry i didn't know 😅 i am just a mechanical engineer i don't know lots about programming and data transfers ... And somehow i thought because its via WiFi it would be quicker 😅 i didn't think about the interface between the printer and the pi 😅 

Keep it up 🤗 after finishing it will be a perfect product 

RE: Heating disabled by safety timer

Oh I wish it would become awesome 🙂