Octoprint zits, switch to Mainsail but... | Mainsail | Page 1

zinc edge May 7, 2023, 11:51 AM

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Hi All,

Using Octoprint since many time and printing essentially technical straight part, well I never noticed zits or blobs on my print.

I'm now trying to print a part that have cylinders and get a lot of zits/blobs.
My researches inform me that Octoprint is not able in particular cases, where there is a lot of information for a "high definition" circle for exemple, to send data fast enough.

I'm on SKR 1.4 turbo mother board.
RPi 3 B+.
50cm nice USB cable.

I was thinking that using a most "Klipper dedicated OS" can solve my problem, so I just switched to Mainsail.
I setup the "virtual SD card" by adding :

[virtual_sdcard]
path: ~/printer_data/gcodes

In "printer.cfg" file and it's the same path in the "mainsail.cfg" file.

But I still have the zits/blobs... (red cylinder)

How to reach the SD Card print quality from a RPi ???

novel lance May 7, 2023, 12:09 PM

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I am not sure what you expect but I explain you the difference:

Octoprint is a gcode streamer, in that scenario Klipper works as pure firmware and Octoprint sends the gcode line by line. That’s results in that the head sometimes pause if it can not send the gcodes fast enough. And yes worst case here are circles as that are many small moves.
virtual SD card print (btw also posible using Octoprint), in that scenario the UI (Mainsail, Octoprint whatever) tells Klipper only to print the gcode file. Klipper will open it and take care of the rest (reading the file from the card …)

Both have nothing to do with the artifacts you seeing in your print. For me that looks more like an old wet filament.

zinc edge May 7, 2023, 12:21 PM

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Look on the black part, the "big circle" at the center is perfectly printed.
That doesn't come from filament.

novel lance May 7, 2023, 12:22 PM

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I am talking about your red cylinder

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As said I do not understand your technical question, if your where at Klipper and switched only between Octo and Virtual SD nothing changed.

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What do you exempt from us, currently for me it looks more like a question for #print-quality

zinc edge May 7, 2023, 12:28 PM

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My "question" was about the data transfert speed between Octoprint and Mainsail.
The zits I get come from the capability to send the information to Klipper.
In Cura, I can reduce the resolution and I have less zits.

But how to get ride of it...?

novel lance May 7, 2023, 12:31 PM

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As I tried to explain, Octoprint send the gcode commands line by line to klipper ( done via a virtual console) in that that case you can see that the heads stand still for a second or longer and than continuing to print. A print imitated via virtual scarf means that Klipper reads the file direct and can plan ahead better and therefor you will not see the head pausing even if you print much faster.

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So first question do you see that phenomenon that the head pauses in the middle of the print and continue a second or 2 later

zinc edge May 7, 2023, 12:33 PM

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That's what I try to do setting Virtual SD card, but there is no difference...

zinc edge May 7, 2023, 12:33 PM

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novel lance So first question do you see that phenomenon that the head pauses in the middle ...

Yes, but that's not 2 sec, it's a couple of millisecond

novel lance May 7, 2023, 12:34 PM

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Is that gone if you use the virtual sd card? Mainsail has nothing to do with it. In case using Mainsail you can compare it with mainsail is sitting on the backseat and watching Klipper driving

zinc edge May 7, 2023, 12:35 PM

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That's what I'm trying to do !

May you please confirm that the "only thing" to do is to add :

[virtual_sdcard]
path: ~/printer_data/gcodes

In "printer.cfg" ?

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The same path is in "mainsail.cfg"

novel lance May 7, 2023, 12:37 PM

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If you have [include mainsail.cfg] already in your printer.cfg you do not need to add it a second time

zinc edge May 7, 2023, 12:37 PM

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You right, I remove it from printer.cfg right now.

novel lance May 7, 2023, 12:38 PM

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But it will not harm and yes if you have that block in and start a print in Mainsail it will request Klipper to print the file xyz and from that point in time only monitor Klipper

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Klipper does the rest, that means Klipper reads the file direct from the sd card and does everything internally.

zinc edge May 7, 2023, 12:40 PM

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Well. So I don't know what to do.

novel lance May 7, 2023, 12:40 PM

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That’s why I said your question is more likely something for #print-quality

zinc edge May 7, 2023, 12:42 PM

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Last question about the RPi.

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A RPi 3 B+ of powerful enough ?

novel lance May 7, 2023, 12:43 PM

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That depends on the printer and also what else is running in parallel, but in general a 3B is powerful enough

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I see that bend corners also on the big black circle so it might be a combination of mechanics, speed and resolution

zinc edge May 7, 2023, 12:45 PM

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A Sunlu S8 with SKR 1.4 Turbo board.
I have a 3D touch and a webcam 720p/15fps

zinc edge May 7, 2023, 12:46 PM

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novel lance I see that bend corners also on the big black circle so it might be a combinatio...

Bend corner ?

novel lance May 7, 2023, 12:49 PM

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And all others

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I would try to print a cylinder in vase mode with the diameter of that part

zinc edge May 7, 2023, 12:50 PM

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Yes, that's the overextrusion caused by the head micro pause...

zinc edge May 7, 2023, 12:50 PM

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novel lance I would try to print a cylinder in vase mode with the diameter of that part

I'll do it right now

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give me 15min

zinc edge May 7, 2023, 1:17 PM

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I still have random pauses.

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Only in the same area

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I can see the head briefly slow down and restart

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The other side is perfectly printed

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novel lance May 7, 2023, 1:21 PM

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Minimum layer time active?

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What happens if you reduce speed?

zinc edge May 7, 2023, 1:22 PM

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I have made that mistake first, that's why it took me so long.
Minimum layer time is setted now at 1sec.
I launch a print at 50mm/s, I'm currently at 100mm/s

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Still have the same "head pause/lag"

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I can see the lag during print

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same behavior than using Octoprint, Klipper seems to wait the next information.

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It's always in the same area, there is a bottleneck.
But were ?

zinc edge May 7, 2023, 5:47 PM

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Well, no problem with Prusa Slicer (I was using Cura since ages)

willow zinc May 7, 2023, 6:32 PM

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do you print with octoprint or mainsail now? is octoprint also on the same system installed? i cannot read this information in this conversation...

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ans pls upload a gcode file + klipper log for more informations + a video from the print, when it stops

zinc edge May 7, 2023, 8:27 PM

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Hi, Thanks, problem is totally solved using Prusa Slicer !

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I'm now on Mainsail

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may you please confirm that is the only thing to add in "moonraker.cfg" to get a "auto power off" once printing is finished :

[power SunluS8]
type: gpio
pin: gpio2
locked_while_printing: True
on_when_job_queued: True
restart_klipper_when_powered: True
restart_delay: 2
bound_service: klipper
off_when_shutdown: True
off_when_shutdown_delay: 180

willow zinc May 7, 2023, 8:29 PM

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ok. maybe a "settings issue" with cura...

zinc edge May 7, 2023, 8:29 PM

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I guess too

willow zinc May 7, 2023, 8:31 PM

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zinc edge may you please confirm that is the only thing to add in "moonraker.cfg" to get a...

i would recommend you to close this post when it is fixed ans create an own post for next/other questions...

but you mixed up this setting. "off_when_shutdown" is meant that klipper itself is in the "shutdown" state. not the pi. you have to add the off command in your "print_end" macro. but dont do this, when your rpi is on the same power line.

zinc edge May 7, 2023, 8:33 PM

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Noticed and thanks you.
What is the command to add (and then I close the post)?

willow zinc May 7, 2023, 8:38 PM

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https://moonraker.readthedocs.io/en/latest/configuration/#toggling-device-state-from-klipper

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but remember that you are simply taking the power away from your pi!

zinc edge May 7, 2023, 8:47 PM

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willow zinc but remember that you are simply taking the power away from your pi!

Thanks, I only want to toggle the GPIO2 pin, there is a relay for the printer.
RPi is on another line

willow zinc May 7, 2023, 8:49 PM

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zinc edge Thanks, I only want to toggle the GPIO2 pin, there is a relay for the printer. R...

thats perfect then!!! go for it!

zinc edge May 7, 2023, 8:51 PM

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Why that doesn't work ?

[power SunluS8]
type: gpio
pin: gpio2
locked_while_printing: True
on_when_job_queued: True
restart_klipper_when_powered: True
restart_delay: 2
bound_service: klipper
off_when_shutdown: True
off_when_shutdown_delay: 180

willow zinc May 7, 2023, 8:53 PM

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is your klippy state "shutdown"?

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(this would be a thermal runaway or some other klipper errors)

zinc edge May 7, 2023, 8:57 PM

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I have to add end-gcode "shutdown" ?

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(sorry it was a plugin in Cura...)

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It's the last thing I miss !

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It's seems to only miss a M80 in my end-gcode

willow zinc May 7, 2023, 9:00 PM

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zinc edge I have to add end-gcode "shutdown" ?

this is no gcode command... pls check the link above

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but i think you have to do it as a delayed macro. otherwise you will see all jobs as "canceled" in your history, when you poweroff your printer "during" a job

zinc edge May 7, 2023, 9:02 PM

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I see, but there is no link with GPIO2 in your link

willow zinc May 7, 2023, 9:02 PM

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this doesnt matter...

zinc edge May 7, 2023, 9:02 PM

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ok, thanks

willow zinc May 7, 2023, 9:02 PM

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just the name have to match

zinc edge May 7, 2023, 9:02 PM

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The name of my printer ?

willow zinc May 7, 2023, 9:02 PM

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power device

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pls read the description below... there are all informations about this script

zinc edge May 7, 2023, 9:05 PM

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I'm on it, OK, we was rightly talking about [power SunluS8] in my case.

willow zinc May 7, 2023, 9:07 PM

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SunluS8 in your case

#Octoprint zits, switch to Mainsail but...