Add "Emergency Stop" button, or disable "Confirm to stop"?

[classicrocker883]

It's been brought to my attention by @npaisnel that the "Stop" print should immediately stop without confirming.

I agree this should be changed. I'd like to go through some ideas on how we can do this, if we should, or how we can do it and make it work great.

a couple ideas I have are:

• Add a separate "Emergency Stop", which does just that, it stops and immediately kills the printer (like an error). or maybe not 'kill' but stops it in place.
• when you select "Stop" there is a slight delay, giving the user a chance to change their mind without having to confirm, but it continues to stop of the user doesn't do anything. kind of like how it is but it says "Stopping print, if you didn't mean to do this hit 'ok'" or something like that.

@Mik-S-UMS can I ask for your input if you don't mind

[npaisnel]

I do not think a delay after selecting Stop is necessary. Rather like the old joke about a car asking "Are you sure? " before the airbags go off/. This world of computing is just too full Are you sure? confirmation dialogue boxes. I thing we are all adult enough to take responsibility for our own actions. If you have scrolled to the STOP button and clicked it ..it is pretty clear you want to stop... Emergency Stop that kills print and disables stepper would be great. Emergency stop that lifts head, retracts filament and presents the birds nest of mess the printer has likely created would be great too..but just a STOp and Disable will be good enough. More than once now I have just pulled the plug from the wall, rather than go through the current painful "Stop" process

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On 11 Oct 2025, at 18:58, Andrew ***@***.***> wrote: It's been brought to my attention by @npaisnel <https://github.com/npaisnel> that the "Stop" print should immediately stop without confirming. I agree this should be changed. I'd like to go through some ideas on how we can do this, if we should, or how we can do it and make it work great. a couple ideas I have are: Add a separate "Emergency Stop", which does just that, it stops and immediately kills the printer (like an error). or maybe not 'kill' but stops it in place. when you select "Stop" there is a slight delay, giving the user a chance to change their mind without having to confirm. kind of like how it is but it says "Stopping print, if you didn't mean to do this hit 'ok'" or something like that. @Mik-S-UMS <https://github.com/Mik-S-UMS> can I ask for your input if you don't mind — Reply to this email directly, view it on GitHub <#224>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AKACSQVF4LOZZOLEJPE2CV33XFANDAVCNFSM6AAAAACI5SKTMOVHI2DSMVQWIX3LMV43ERDJONRXK43TNFXW4OZZGAYTCOJSHE>. You are receiving this because you were mentioned.

[classicrocker883]

I can always just remove that confirmation which is the easiest. like if it were me I'd get rid of most of them, but then there are others using the same UI and wish for a happy medium.

so I try to make as many changeable options.

I can make up some tests and see what feels right. planning a new release any day so I'll put changes in that

[Mik-S-UMS]

I don't really have an opinion either way.
It's been a while since I last used my printer so can't remember what the current behaviour is when stopping.

If you do add an emergency stop it should be immediate and cut all movement and heaters, but this would work better an a physical button to cut power to the printer instead of something in the firmware. That way the has to be an intentional act and not something activated by accident. But then again the power switch does this too.

For a stop option the delay would not be needed as long as it is not easy to activate it in the first place.
I don't know if it currently does this but the FW could run the stop Gcode from that print when stopped so what it does can be customised.
I had it set up to raise 5mm, home X, move the bed out to present the print, then power off the motors and heaters.

For stop in place is this not just the same as pausing movement but keeping the heaters and motors powered so it can be resumed?
Maybe it should move up a little so it does not melt what has already been printed.

[classicrocker883]

as of now when a print is aborted it should raise up. I did have a field day trying to get that right (normal simple coding just didn't want to to work). there is an option in Advance Settings to disable steppers.

because in my experience printing, there was a time It was almost done after so many hours, the filament failed and kept printing, so when I hit stop print, it kept the Z axis.

had to bring the nozzle down the the tallest height to see where it stopped. all I had to do was keep the bed temps from going down, and reslice by ommiting the part which already printed, basically cut the beginning of the .gcode.

I suppose I could have taken the original Gcode. and done that. Anyway it worked out well only because the power to the motors was never cut. that option should be there now

[npaisnel]

On a note from what you said there….you restarted a failed print by finding the height, then finding that line in the GCode ! 😱. Seriously impressed.   I thought about it being possible, but actually being able to find the line and being sure it is the right one !Back to confirmation dialogues, the idea of having them switchable, rather like the Windows delete / trash can dialogues that can be turned off is just a great way to goSent from my iPhoneOn 12 Oct 2025, at 17:00, Andrew ***@***.***> wrote: as of now when a print is aborted it should raise up. I did have a field day trying to get that right (normal simple coding just didn't want to to work). there is an option in Advance Settings to disable steppers. because in my experience printing, there was a time It was almost done after so many hours, the filament failed and kept printing, so when I hit stop print, it kept the Z axis. had to bring the nozzle down the the tallest height to see where it stopped. all I had to do was keep the bed temps from going down, and reslice by ommiting the part which already printed, basically cut the beginning of the .gcode. I suppose I could have taken the original Gcode. and done that. Anyway it worked out well only because the power to the motors was never cut. that option should be there now —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you were mentioned.Message ID: ***@***.***>

[classicrocker883]

i supposed I can do that, just make an option which allows you to have confirmation box. I can do that for both Pause and Stop and leave it off by default.

it will teach those to be more careful 😂

back to the print stop and restarting it. it wasn't all that difficult once you know the Z position. say 30.20, when a print stops, it raises by 10, so when you look it should say 40.20. you can always confirm by going to the Prepare>Move Axis menu and lower until the nozzle just touches. it does help to go back to the slicer and search by layer now that you know the height. when you know the layer, you go back to .gcode and delete everything up until that layer it should say ;LAYER_CHANGE ;Z:5.4 or look for G1 Z5.4 (5.4 being the Z height) - well of course u want to keep the heating and fan setting or manually set them, but be sure to keep the bed temp on!!

a ton of prints can be saved that way - then again you can enable POWER_LOSS_RECOVERY - which is disabled by default and power off. personally i never tired this. and I like to leave it off since it can cause issues, not sure if those been fixed or not.

[classicrocker883]

i want to say that the Pull Request i made is ready. I have it as an option called "Emergency Stop/Pause", which you can change in the Tune menu.

[npaisnel]

Excellent I’ll go look laterJust got to work Sent from my iPhoneOn 14 Oct 2025, at 22:28, Andrew ***@***.***> wrote: i want to say that the Pull Request i made is ready. I have it as an option called "Emergency Stop/Pause", which you can change in the Tune menu. —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you were mentioned.Message ID: ***@***.***>

[npaisnel]

GreatIs it in the main firmware release on your GitHub / Firmware selector page?Sent from my iPhoneOn 14 Oct 2025, at 22:28, Andrew ***@***.***> wrote: i want to say that the Pull Request i made is ready. I have it as an option called "Emergency Stop/Pause", which you can change in the Tune menu. —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you were mentioned.Message ID: ***@***.***>

[classicrocker883]

just posted the release. give it a few to compile. should be all ready in a few min

[npaisnel]

Will try tonightSent from my iPhoneOn 21 Oct 2025, at 11:49, Andrew ***@***.***> wrote: just posted the release. give it a few to compile. should be all ready in a few min —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you were mentioned.Message ID: ***@***.***>

[classicrocker883]

unfortunately there was an error compiling. some didnt get made. if you found yours that is fine, but i will have to reupload.

[npaisnel]

Tried it just nowI did not even let it fully heat but I did the stop, and yes, better for sure.But still once it is aborted and motors stopped…. Still has a pointless ‘confirm’ after it has stopped.Maybe after Stop is hit.. it does its thing, flashes screen red and goes back to main menu without needing to confirm it has stopped. Sent from my iPhoneOn 22 Oct 2025, at 00:59, Andrew ***@***.***> wrote: unfortunately there was an error compiling. some didnt get made. if you found yours that is fine, but i will have to reupload. —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you were mentioned.Message ID: ***@***.***>

[classicrocker883]

Still has a pointless ‘confirm’ after it has stopped.

I haven't been able to figure that one out. this also shows when changing filament. thats the next thing to look into. but im glad its working well now

[npaisnel]

YesThanks I tried a test print and stopped after skirt / brim. Nice now thanksSent from my iPhoneOn 24 Oct 2025, at 02:34, Andrew ***@***.***> wrote: Still has a pointless ‘confirm’ after it has stopped. I haven't been able to figure that one out. this also shows when changing filament. thats the next thing to look into. but im glad its working well now —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you were mentioned.Message ID: ***@***.***>