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Are there any downsides to using octoprint on a MK3S+?  

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Foofighter55
(@foofighter55)
Active Member
Are there any downsides to using octoprint on a MK3S+?

Hi all. 

I just got a MK3S+ and have successfully setup octoprint with it but I’m wondering if there are any functions that are built into the printer that I will not be able to use if I use octoprint to print? For example will the live Z offset value carry over into my octoprint prints and will I still be able to change filament mid print? Thanks!

Posted : 06/07/2021 10:38 pm
egar
 egar
(@egar)
Estimable Member
RE: Are there any downsides to using octoprint on a MK3S+?

I'm sure there are likely other short-comings, but the only one I am aware is the loss of the ability to resume a print after a power failure.  That's not a very high risk item for me, so the benefits of Octoprint far outweigh that one minor challenge.

Posted : 06/07/2021 10:58 pm
fuchsr
(@fuchsr)
Famed Member
RE: Are there any downsides to using octoprint on a MK3S+?

@egar

And you can mitigate it (to some extent) by putting your printer on a UPS.

Posted : 07/07/2021 1:13 am
bobstro
(@bobstro)
Illustrious Member
RE: Are there any downsides to using octoprint on a MK3S+?

There are a few specific circumstances where OctoPrint can cause problems related to the use of USB (serial) communications. I haven't experienced this myself, but there are many reports of prints with many small and rapid angled moves resulting in poor finish due to communications delays. I'd say this is a rare occurrence. OctoPrint does strip gcode comments before sending, so in that regard, it actually reduces communications workload. Using the ArcWelder plugin also significantly reduces the amount of gcode data. Overall, I find OctoPrint a definite plus.

My notes and disclaimers on 3D printing

and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

Posted : 07/07/2021 1:36 pm
towlerg
(@towlerg)
Noble Member
RE: Are there any downsides to using octoprint on a MK3S+?

One possibility is filament runout. Although Marlin has the ability to signal an occurrence to Octoprint, I don't know if that function is enabled in Prusa firmware.

Posted : 07/07/2021 2:03 pm
bobstro
(@bobstro)
Illustrious Member
RE: Are there any downsides to using octoprint on a MK3S+?
Posted by: @towlerg

One possibility is filament runout. Although Marlin has the ability to signal an occurrence to Octoprint, I don't know if that function is enabled in Prusa firmware.

I recall my Mk3 runout detection still worked with OctoPrint. Unfortunately, it's in pieces awaiting a new motor so I can't test to confirm.

My notes and disclaimers on 3D printing

and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

Posted : 07/07/2021 2:13 pm
fuchsr
(@fuchsr)
Famed Member
RE: Are there any downsides to using octoprint on a MK3S+?

@towlerg

It is, and it works fine.

Posted : 07/07/2021 2:21 pm
egar
 egar
(@egar)
Estimable Member
RE: Are there any downsides to using octoprint on a MK3S+?

@fuchsr

My only power problems are self-induced.  Twice I have turned off the printer when I was intending to turn off the light in my enclosure.  The printer power switch and the light switch aren't even close to each other and are different colors.  If only there were an UPS like device to cure my own stupidity. 🙁 

Posted : 07/07/2021 3:57 pm
fuchsr
(@fuchsr)
Famed Member
RE: Are there any downsides to using octoprint on a MK3S+?

@egar

I hear you... Like me the other day: "Alexa, turn off the Mini One.... NOOOO.... Mini Two! Mini Two!....NOOOOO"

Posted : 07/07/2021 4:33 pm
towlerg
(@towlerg)
Noble Member
RE: Are there any downsides to using octoprint on a MK3S+?
Posted by: @fuchsr

@egar

I hear you... Like me the other day: "Alexa, turn off the Mini One.... NOOOO.... Mini Two! Mini Two!....NOOOOO"

Isn't it annoying when your tech bites you in the arse.

Posted : 08/07/2021 10:14 am
You liked
bobstro
(@bobstro)
Illustrious Member
RE: Are there any downsides to using octoprint on a MK3S+?

My wife wanted a bit more volume for her music, so asked our Home Mini for "more sound". It responded by neighing at her. I think it understood "horse sound". I nearly died laughing. 

My notes and disclaimers on 3D printing

and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

Posted : 08/07/2021 1:20 pm
Henry
(@henry-2)
Estimable Member
UUuuuhhhhh why must i add a title to a reply

 @foofighter55

If you want to take advantage of the features in PrusaSlicer (and likely other slicers) to pause a print for some reason (filament change, add magnets or weights, etc) then you'll want to go to OctoPrint's settings --> GCODE Scripts

For After print job is paused, enter "M601" (no quotes)
For Before print job is resumed, enter "M602" (no quotes)

Without these lines, the extruder will not run after unpausing. For what it's worth, I pause and unpause from OctoPrint (or from the slicer). I'm not sure how well it will work if using OctoPrint and pausing from the printer's control panel.

Posted : 24/07/2021 10:28 pm
Andy liked
towlerg
(@towlerg)
Noble Member
HOST_ACTION_COMMANDS

I'm not sure how well it will work if using OctoPrint and pausing from the printer's control panel.

That will depend upon printer firmware. Newer versions of Marlin have the option to allow the printer to inform a host of such things.

Posted : 25/07/2021 1:44 pm
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