External Pause/Resume Button

burtonenator

@nightowl999

I have the initial M42 in the config.g because it does actually start with that on, so this sets it off, and then after that its in the pause and resume to set it correctly when pressed.

Yea, the out on the io's is 3.3v, I needed a transistor to bring it up to 5v for my LED, which in that one I showed above lists as 12v but looks great at 5v

oliof

@burtonenator if you used M950 P8 C"!io8.out"you could skip the M42 IIRC.

Nightowl

@burtonenator said in External Pause/Resume Button:

the only issue is I do have to push the button until the command is recognized, so if the printer is doing a long line, it won't catch

Following on from this comment, what in 3D printing terms is "...a long line"? I appreciate this is the code within the gcode file, obviously , but i'm not familiar with how travel speed/time on a 3D printer compares to that of a CNC machine.

Is it a case of CNCers savagely cut their way through stock while 3D printers gently weave their way?

Thanks

Phaedrux

@nightowl999 said in External Pause/Resume Button:

.a long line

It means that each command would execute and complete before an interruption/pause could take effect before the next command is executed.

You can reduce this effect by increasing the segmentation value. This breaks long running commands up into smaller sections which allows the interruption to happen sooner.

See the details on the M669 command for how to configure segmentation.

https://docs.duet3d.com/en/User_manual/Reference/Gcodes#m669-set-kinematics-type-and-kinematics-parameters

Nightowl

Sorry, I was being slightly flippant, @phaedrux, although it would be interesting to know how these things compare.

I can cut a a 12" slot in a piece of hardwood with a 1/4" end mill quite qhickly, but I guess it would take a lot longer for a 3D printer to build a 1/4" square bar 12" long quite a bit longer, but I suppose it's trying to compare apples and pears...

Phaedrux

It's not about the time or speed it takes, it's about the gcode command itself which would be the same in CNC or 3d printer. The point being that in order to interrupt a command in progress it must be segmented to stop it mid execution.

Nightowl

@phaedrux I'm being a plum. I was getting confused with another thread! Sorry.

No, this question was really about the delay when activating the pause command for the external switch.

fcwilt

@nightowl999 said in External Pause/Resume Button:

it's trying to compare apples and pears...

I like pears but my wife doesn't.

Frederick

Nightowl

@fcwilt

Nightowl

@burtonenator
Just a quick update: I now have full pause/resume control via an external switch. Yaay!

Thank you for your wisdom and help.

Nightowl

@burtonenator

I found a little anomaly with the code. It is just a little one, but if you run the file from the Jobs screen, everything works as it should (thanks again), but if you rerun the file from the Start Again button in the Job Control window of the Dashboard, the file will run, but if you use the external button to Pause the process, you get an error:

Error: Cannot print, because no file is selected!

So I'm guessing the "job.file.fileName" line might need a bit of a tweak.

I'll see how I get on...

EDIT: Erm, it doesn't seem to do it now. I'll check again over the next few days and report back...